



C3  Tricarbon  993  
C3BrN  Bromocyanoacetylene  994  
C3Br2F6  1,2-Dibromo-1,1,2,3,3,3-hexafluoropropane  995  
C3ClF3  1-Chloro-3,3,3-trifluoropropyne  996  
C3ClN  Chlorocyanoacetylene  997  
C3ClN3O3Si  Chlorosilanetriyl triisocyanate  998  
C3Cl2F6  1,2-Dichloro-1,1,2,3,3,3-hexafluoropropane  999  
C3Cl2F6  1,3-Dichloro-1,1,2,2,3,3-hexafluoropropane  1000  
C3Cl2F9P  Dichlorotris(trifluoromethyl)phosphorane  1001  
C3Cl4  Tetrachlorocyclopropene  1002  
C3Cl6  1,1,2,3,3,3-Hexachloro-1-propene  1003  
C3Cl6  Hexachlorocyclopropane  1004  
C3Cl6O  Hexachloropropanone  1005  
C3Cl8  Octachloropropane  1006  
C3CoNO4  Tricarbonylnitrosylcobalt  1007  
C3FN  3-Fluoro-2-propynenitrile  1008  
C3F2O  3,3-Difluoro-1,2-propadienone  1009  
C3F2O  2,3-Difluoro-2-cyclopropenone  1010  
C3F3N3  2,4,6-Trifluoro-1,3,5-triazine  1011  
C3F4  1,3,3,3-Tetrafluoropropyne  1012  
C3F4O2  Difluoromalonyl difluoride  1013  
C3F6  1,1,2,3,3,3-Hexafluoro-1-propene  1014  
C3F6  Hexafluorocyclopropane  1015  
C3F6O  Hexafluoropropanone  1016  
C3F6O  2-(Trifluoromethyl)-2,3,3-trifluorooxirane  1017  
C3F6OS  Hexafluoropropanethione S-oxide  1018  
C3F6O2  Hexafluoro-1,2-dioxolane  1019  
C3F6O6S3  2,2,4,4,6,6-Hexafluoro-1,3,5-trithiane 1,1,3,3,5,5-hexaoxide  1020  
C3F6S  1,1,2-Trifluoro-2-[(trifluoromethyl)thio]ethene  1021  
C3F7I  1,1,1,2,3,3,3-Heptafluoro-2-iodopropane  1022  
C3F8  Octafluoropropane  1023  
C3F9N  Tris(trifluoromethyl)amine  1024  
C3F9NS3  Tris(trifluoromethylthio)amine  1025  
C3F9P  Tris(trifluoromethyl)phosphine  1026  
C3F9PS  Trifluoromethyl bis(trifluoromethyl)phosphinothioite  1027  
C3F9PS3  Tris(trifluoromethyl) phosphorotrithioite  1028  
C3F11P  Difluorotris(trifluoromethyl)phosphorane  1029  


C3H  Cyclopropynyl  1030  
C3HClO  Propioloyl chloride  1031  
C3HCl3F2  1,1,2-Trichloro-3,3-difluoro-1-propene  1032  
C3HCl5  1,1,2,3,3-Pentachloro-1-propene  1033  
C3HCl7  1,1,1,2,2,3,3-Heptachloropropane  1034  
C3HFO  Propioloyl fluoride  1035  
C3HF3  3,3,3-Trifluoro-1-propyne  1036  
C3HF3O  3,3-Difluoro-2-propenoyl fluoride  1037  
C3HF6N  Hexafluoro-2-propanimine  1038  
C3HN  2-Propynenitrile  1039  
C3HN  Ethynyl isocyanide  1040  
C3HNO  Ethynyl isocyanate  1041  
C3HNO4  Hydrogen cyanide - carbon dioxide (1/2)  1042  
C3HN3  2-Propynenitrile - dinitrogen (1/1)  1043  
C3HO  3-Oxo-1,2-propadien-1-yl  1044  
C3HP  1-Phospha-1,3-butadiyne  1045  
C3HS  3-Thioxo-1,2-propadien-1-yl  1046  


C3H2  1,2-Propadien-1,3-diyl  1047  
C3H2  1,2-Propadienylidene  1048  
C3H2  Cyclopropenylidene  1049  
C3H2ClF  1-Chloro-1-fluoro-1,2-propadiene  1050  
C3H2ClF  1-Chloro-3-fluoropropyne  1051  
C3H2ClN  2-Chloro-2-propenenitrile  1052  
C3H2Cl2  1,3-Dichloropropyne  1053  
C3H2Cl2O  2-Chloropropenoyl chloride  1054  
C3H2Cl2O2  Propanedioyl dichloride  1055  
C3H2Cl4  1,1,3,3-Tetrachloro-1-propene  1056  
C3H2Cl4  (E)-1,2,3,3-Tetrachloro-1-propene  1057  
C3H2Cl4  (Z)-1,2,3,3-Tetrachloro-1-propene  1058  
C3H2Cl6  1,1,2,2,3,3-Hexachloropropane  1059  
C3H2FN  Cyanoacetylene  hydrogen fluoride (1/1)  1060  
C3H2F2  1,1-Difluoro-1,2-propadiene  1061  
C3H2F2  3,3-Difluorocyclopropene  1062  
C3H2F2O2  Propanedioyl difluoride  1063  
C3H2F4  1,1,2,2-Tetrafluorocyclopropane  1064  
C3H2F4  cis-1,1,2,3-Tetrafluorocyclopropane  1065  
C3H2F6  1,1,1,3,3,3-Hexafluoropropane  1066  
C3H2F6S2  Bis[(trifluoromethyl)thio]methane  1067  
C3H2N2  Propanedinitrile  1068  
C3H2N2O  Carbon monoxide  hydrogen cyanide (1/2)  1069  
C3H2N2O2  Carbon dioxide - hydrogen cyanide (1/2)  1070  
C3H2N2O2S  1,6-Dioxa-6a.4-thia-2,5-diazapentalene  1071  
C3H2O  Methyleneketene  1072  
C3H2O  Propynal  1073  
C3H2O  Cyclopropenone  1074  
C3H2O  Acetylene  carbon monoxide (1/1)  1075  
C3H2O2  Acetylene - carbon dioxide (1/1)  1076  
C3H2O3  Vinylene carbonate  1077  
C3H2S  1,2-Propadiene-1-thione  1078  


C3H3ArN  Acrylonitrile - argon (1/1)  1079  
C3H3ArNO  Oxazole - argon (1/1)  1080  
C3H3ArNS  Thiazole  argon (1/1)  1081  
C3H3ArNS  Isothiazole  argon (1/1)  1082  
C3H3Br  Bromo-1,2-propadiene  1083  
C3H3Br  1-Bromopropyne  1084  
C3H3Br  Propargyl bromide  1085  
C3H3BrO  2-Bromo-2-propenal  1086  
C3H3Cl  1-Chloro-1-propyne  1087  
C3H3Cl  Propargyl chloride  1088  
C3H3ClO  Propenoyl chloride  1089  
C3H3ClO  2-Chloro-2-propenal  1090  
C3H3Cl2OP  1,2-Propadienylphosphonic dichloride  1091  
C3H3Cl3  (E)-1,2,3-Trichloro-1-propene  1092  
C3H3Cl3F2Si  Trichloro(2,2-difluorocyclopropyl)silane  1093  
C3H3Cl5  1,1,2,3,3-Pentachloropropane  1094  
C3H3Cl5  1,1,3,3,3-Pentachloropropane  1095  
C3H3F  1-Fluoro-1,2-propadiene  1096  
C3H3F  3-Fluoro-1-propyne  1097  
C3H3FO  Acryloyl fluoride  1098  
C3H3F3  3,3,3-Trifluoro-1-propene  1099  
C3H3F3  cis,cis-1,2,3-Trifluorocyclopropane  1100  
C3H3F3  r-1,c-2,t-3-1,2,3-Trifluorocyclopropane  1101  
C3H3F3N2  Fluoroform - hydrogen cyanide (1/2)  1102  
C3H3F3O  a,a,a-Trifluoroacetone  1103  
C3H3F3O4  Formic acid - trifluoroacetic acid (1/1)  1104  
C3H3F3Si  3,3,3-Trifluoro-1-silyl-1-propyne  1105  
C3H3F5Si  1,1-Difluoro-2-(trifluorosilyl)cyclopropane  1106  
C3H3F6N  1,1,1-Trifluoro-N-methyl-N-(trifluoromethyl)methanamine  1107  
C3H3I  3-Iodo-1-propyne  1108  
C3H3N  2-Propenenitrile  1109  
C3H3N  Vinyl isocyanide  1110  
C3H3N  (Z)-2-Propynimine  1111  
C3H3N  Acetylene  hydrogen cyanide (1/1)  1112  
C3H3NO  Propynamide  1113  
C3H3NO  2-Oxopropanenitrile  1114  
C3H3NO  Vinyl isocyanate  1115  
C3H3NO  Oxazole  1116  
C3H3NO  Isoxazole  1117  
C3H3NO  Fulminic acid  acetylene (1/1)  1118  
C3H3NO2  2-Propynyl nitrite  1119  
C3H3NO2  Acetyl isocyanate  1120  
C3H3NO2  Methyl cyanoformate  1121  
C3H3NO2S  5-Methyl-1,3,4-oxathiazol-2-one  1122  
C3H3NS  Thiazole  1123  
C3H3NS  Isothiazole  1124  
C3H3N3  3-Azidopropyne  1125  
C3H3N3  1,3,5-Triazine  1126  
C3H3N3  Hydrogen cyanide trimer  1127  
C3H3P  1-Phospha-3-buten-1-yne  1128  


C3H4  Methylacetylene  1129  
C3H4  1,2-Propadiene  1130  
C3H4  Cyclopropene  1131  
C3H4Ar  Methylacetylene - argon (1/1)  1132  
C3H4BrCl  2-Bromo-3-chloro-1-propene  1133  
C3H4BrN  3-Bromopropionitrile  1134  
C3H4Br2  2,3-Dibromo-1-propene  1135  
C3H4ClF  (Z)-1-Chloro-3-fluoro-1-propene  1136  
C3H4ClF  2-Chloro-3-fluoro-1-propene  1137  
C3H4ClF3  3-Chloro-1,1,1-trifluoropropane  1138  
C3H4ClN  3-Chloropropionitrile  1139  
C3H4ClOPS  2-Chloro-5-methyl-1,3,2-oxathiaphosphole  1140  
C3H4Cl2  trans-1,3-Dichloro-1-propene  1141  
C3H4Cl2  cis-1,3-Dichloro-1-propene  1142  
C3H4Cl2  2,3-Dichloro-1-propene  1143  
C3H4Cl2  1,1-Dichlorocyclopropane  1144  
C3H4Cl2O2  Methyl dichloroacetate  1145  
C3H4Cl3N  (E)-N-Methyl-2,2,2-trichloroethylidenamine  1146  
C3H4Cl4  1,1,3,3-Tetrachloropropane  1147  
C3H4F2  cis-1,2-Difluorocyclopropane  1148  
C3H4F2  trans-1,2-Difluorocyclopropane  1149  
C3H4F2  1,1-Difluorocyclopropane -d4  1150  
C3H4F2NOP  3-(Difluorophosphinooxy)propionitrile  1151  
C3H4NO3P  2-Isocyanato-1,3,2-dioxaphospholane  1152  
C3H4N2  Pyrazole  1153  
C3H4N2  Imidazole  1154  
C3H4N2  Hydrogen cyanide - acetonitrile (1/1)  1155  
C3H4N2  Methyl isocyanide  hydrogen cyanide (1/1)  1156  
C3H4N2  Methylacetylene - dinitrogen (1/1)  1157  
C3H4O  Methoxyethyne  1158  
C3H4O  1-Propen-1-one  1159  
C3H4O  Acrylaldehyde  1160  
C3H4O  Cyclopropanone  1161  
C3H4O  Formaldehyde - acetylene (1/1)  1162  
C3H4OS  3-Thietanone  1163  
C3H4O2  Vinyl formate  1164  
C3H4O2  3-Hydroxy-2-propenal  1165  
C3H4O2  2,3-Epoxypropanal  1166  
C3H4O2  3-Oxetanone  1167  
C3H4O2S  Propyne  sulfur dioxide (1/1)  1168  
C3H4O3  Formic acetic anhydride  1169  
C3H4O3  2-Oxopropanoic acid  1170  
C3H4O3  Ethylene carbonate  1171  
C3H4S  (Methyl)thioketene  1172  
C3H4S  2-Propenethial  1173  
C3H4S  2-Propyne-1-thiol  1174  
C3H4S  (Methylthio)ethyne  1175  
C3H4S  2-Methylenethiirane  1176  
C3H4S  2H-Thiete  1177  


C3H5  2-Propen-1-yl  1178  
C3H5BF2  Cyclopropyldifluoroborane  1179  
C3H5Br  (E)-1-Bromo-1-propene  1180  
C3H5Br  2-Bromo-1-propene  1181  
C3H5Br  3-Bromo-1-propene  1182  
C3H5Br  Bromocyclopropane  1183  
C3H5BrO  Propionyl bromide  1184  
C3H5BrO  2-(Bromomethyl)oxirane  1185  
C3H5BrO2S  1-Bromovinyl methyl sulfone  1186  
C3H5BrO2S  3-Bromothietane 1,1-dioxide  1187  
C3H5Br3  1,2,3-Tribromopropane  1188  
C3H5Cl  cis-1-Chloro-1-propene  1189  
C3H5Cl  trans-1-Chloro-1-propene  1190  
C3H5Cl  2-Chloro-1-propene  1191  
C3H5Cl  3-Chloro-1-propene  1192  
C3H5Cl  Cyclopropyl chloride  1193  
C3H5ClO  Propionyl chloride  1194  
C3H5ClO  2-Chloropropionaldehyde  1195  
C3H5ClO  Chloroacetone  1196  
C3H5ClO  2-(Chloromethyl)oxirane  1197  
C3H5ClO2S  (Z)-2-Chlorovinyl methyl sulfone  1198  
C3H5ClO2S  (E)-2-Chlorovinyl methyl sulfone  1199  
C3H5ClS  2-(Chloromethyl)thiirane  1200  
C3H5Cl3  1,2,3-Trichloropropane  1201  
C3H5F  (Z)-1-Fluoro-1-propene  1202  
C3H5F  (E)-1-Fluoro-1-propene  1203  
C3H5F  2-Fluoro-1-propene  1204  
C3H5F  3-Fluoro-1-propene  1205  
C3H5F  Propyne  hydrogen fluoride (1/1)  1206  
C3H5F  1,2-Propadiene - hydrogen fluoride (1/1)  1207  
C3H5FO  Fluoroacetone  1208  
C3H5F3Si  Trifluoro-2-propenylsilane  1209  
C3H5F3Si  (Trifluorosilyl)cyclopropane  1210  
C3H5I  3-Iodo-1-propene  1211  
C3H5N  2-Propen-1-imine '  1212  
C3H5N  Propargylamine  1213  
C3H5N  Propionitrile  1214  
C3H5N  Ethylene  hydrogen cyanide (1/1)  1215  
C3H5NO  Ethyl isocyanate  1216  
C3H5NO  2-Hydroxypropanenitrile  1217  
C3H5NO  3-Hydroxypropanenitrile  1218  
C3H5NO  2-Azetidinone  1219  
C3H5NO  Hydrogen cyanide - oxirane (1/1)  1220  
C3H5NO2  (E)-Hydroxyimino)-2-propanone  1221  
C3H5NO2  Nitrocyclopropane  1222  
C3H5NS  Ethyl isothiocyanate  1223  
C3H5NS  3-Mercaptopropionitrile  1224  
C3H5NS  Thiirane  hydrogen cyanide (1/1)  1225  
C3H5NSe  Ethyl selenocyanate  1226  
C3H5NSe  Ethyl isoselenocyanate  1227  
C3H5N3  Allyl azide  1228  
C3H5O3P  2,6,7-Trioxa-1-phosphabicyclo[2.2.1]heptane  1229  


C3H6  Propene  1230  
C3H6  Cyclopropane  1231  
C3H6ArO3  1,3,5-Trioxane  argon (1/1)  1232  
C3H6AsBrO2  2-Bromo-1,3,2-dioxarsenane  1233  
C3H6BNO  Isocyanatodimethylborane  1234  
C3H6BrCl  1-Bromo-3-chloropropane  1235  
C3H6Br2  1,2-Dibromopropane  1236  
C3H6Br2  1,3-Dibromopropane  1237  
C3H6ClF  2-Chloro-2-fluoropropane  1238  
C3H6ClN  1-Chloroazetidine  1239  
C3H6ClNO  Dimethylcarbamic chloride  1240  
C3H6ClN2OP  2-Chloro-2,3-dihydro-3,5-dimethyl-1,3,4,2-oxadiazaphosphole  1241  
C3H6ClO2P  2-Chloro-1,3,2-dioxaphosphorinane  1242  
C3H6Cl2  1,1-Dichloropropane  1243  
C3H6Cl2  1,2-Dichloropropane  1244  
C3H6Cl2  1,3-Dichloropropane  1245  
C3H6Cl2  2,2-Dichloropropane  1246  
C3H6Cl2Si  Dichloromethylvinylsilane  1247  
C3H6Cl2Si  1,1-Dichlorosilacyclobutane  1248  
C3H6F2  1,3-Difluoropropane  1249  
C3H6F2  2,2-Difluoropropane  1250  
C3H6F2Si  1,1-Difluorosilacyclobutane  1251  
C3H6F3N  1,1,1-Trifluoro-N,N-dimethylmethanamine  1252  
C3H6F4P2S2  1,3-Bis(difluorophosphinothio)propane  1253  
C3H6I2  1,3-Diiodopropane  1254  
C3H6NP  3-Phosphinopropionitrile  1255  
C3H6N2  (Methylamino)acetonitrile  1256  
C3H6N2  Dimethylcyanamide  1257  
C3H6N2  3-Aminopropionitrile  1258  
C3H6N2  3,3-Dimethyl-3H-diazirine  1259  
C3H6N2  4,5-Dihydro-3H-pyrazole  1260  
C3H6N2O2  N-Methyl-N-nitrovinylamine  1261  
C3H6N2O4  2,2-Dinitropropane  1262  
C3H6N4O4  1,3-Dinitroimidazolidine  1263  
C3H6N6O6  Hexahydro-1,3,5-trinitro-1,3,5-triazine  1264  
C3H6O  Propanone  1265  
C3H6O  Allyl alcohol  1266  
C3H6O  Methyl vinyl ether  1267  
C3H6O  Propanal  1268  
C3H6O  2-Methyloxirane  1269  
C3H6O  Oxetane  1270  
C2H6OS  Thietane 1-oxide  1271  
C3H6OS2  S,S-Dimethyl dithiocarbonate  1272  
C3H6O2  Methyl acetate  1273  
C3H6O2  1-Hydroxy-2-propanone  1274  
C3H6O2  Propionic acid  1275  
C3H6O2  Ethyl formate  1276  
C3H6O2  Oxiranemethanol  1277  
C3H6O2  1,3-Dioxolane  1278  
C3H6O2S  Methyl vinyl sulfone  1279  
C3H6O2S  Propylene - sulfur dioxide (1/1)  1280  
C3H6O2S  Cyclopropane  sulfur dioxide (1/1)  1281  
C3H6O3  2-Hydroxypropanoic acid  1282  
C3H6O3  Dimethyl carbonate  1283  

C3H6O3 
2-Hydroxyethyl formate 1284
C3H6S3 1,3,5-Trithiane 1293
C3H6Si 1-Silyl-1-propyne 1294

C3H6O3 
3-Methyl-1,2,4-trioxolane 1285

C3H6O3 
1,3,5-Trioxane 1286

C3H6O3S 
Trimethylene sulfite 1287

C3H6O3Se 
Trimethylene selenite 1288

C3H6O4 
3-Methoxy-1,2,4-trixolane 1289

C3H6S 
Methyl vinyl sulfide 1290

C3H6S 
Thietane 1291

C3H6S3 
Dimethyl trithiocarbonate 1292

C3H9PS3 
Trimethyl trithiophosphite 1416
C3H9SbSe Dimethyl(methylseleno)stibine 1420
C3H9Tl Trimethylthallium 1421

C3H9PSe 
Trimethylphosphine selenide 1417

C3H9SSb 
Dimethyl(methythio)stibine 1418

C3H9Sb 
Trimethylstibine 1419

C4H6O2 
3,6-Dihydro-1,2-dioxin 1664
C4H6S Divinyl sulfide 1673
C4H6S2 Bis(methylthio)ethyne 1674

C4H6O2 
2,3-Dihydro-1,4-dioxin 1665

C4H6O2S 
Divinyl sulfone 1666

C4H6O2S 
2,5-Dihydrothiophene 1,1-dioxide 1667

C4H6O2S 
1,3-Butadiene  sulfur dioxide (1/1) 1668

C4H6O3 
Acetic anhydride 1669

C4H6O3 
1,3-Dioxan-2-one 1670

C4H6O3 
2,3,7-Trioxabicyclo[2.2.1]heptane 1671

C4H6S 
Methyl 1,2-propadienyl sulfide 1672

C4H8S 
Cyclopropanemethanethiol 1765
C4H8Se Tetrahydroselenophene 1771
C4H8Si Silacyclopent-3-ene 1772

C4H8S 
2,2-Dimethylthiirane 1766

C4H8S 
3-Methylthietane 1767

C4H8S 
Tetrahydrothiophene 1768

C4H8S2 
1,1-Bis(methylthio)ethylene 1769

C4H8S2 
1,3-Dithiane 1770

C4H12OSi 
Methoxytrimethylsilane 1854
C4H22B20Hg Bis[1,12-dicarba-closo-dodecaborane(12)-1-yl]mercury(II) 1879
C4H22B20Hg Bis[1,12-dicarba-closo- dodecaborane(12)-2-yl]mercury(II) 1880

C4H12O3Si 
Methyltrimethoxysilane 1855

C4H12O4Si 
Tetramethoxysilane 1856

C4H12P2 
Tetramethyldiphosphine 1857

C4H12Pb 
Tetramethyllead 1858

C4H12Si 
Tetramethylsilane 1859

C4H12Sn 
Tetramethyltin 1860

C4H12Te 
Tetramethyltellurium 1861

C4H13NSi 
Dimethyl(dimethylamino)silane 1862

C4H13NSi 
(Diethylamino)silane 1863

C4H13PSi 
Trimethyl(silylmethylene)phosphorane 1864

C4H14Al2 
Dimethylaluminum hydride dimer 1865

C4H14B2 
Tetramethyldiborane 1866

C4H14Ga2 
Di--hydrido-bis(dimethylgallium) 1867

C4H14N2 
Dimethylamine dimer 1868

C4H14N2Si 
Bis(dimethylamino)silane 1869

C4H14OSi2 
1,1,3,3-Tetramethyldisiloxane 1870

C4H14SSi2 
Bis(dimethylsilyl) sulfide 1871

C4H15NSi2 
Bis(dimethylsilyl)amine 1872

C4H15NSi2 
2-(t-Butyl)disilazane 1873

C4H16B4 
2,4-(trans-Butane-2,3-diyl)tetraborane(10) 1874

C4H16B10 
1,2-Dimethyl-1,2-dicarba-closo-dodecaborane(12) 1875

C4H16B10 
1,12-Dimethyl-1,12-dicarba-closo-1876

C4H16Ga2N2 
Bis--dimethylamido-bis[dihydridogallium(III)] 1877

C4H22B20 
1,1'-Bi[1,12-dicarba-closo-dodecaborane(12)] 1878



C3H7AsS2  2-Methyl-1,3,2-dithiaarsolane  1295  
C3H7Br  1-Bromopropane  1296  
C3H7Br  2-Bromopropane  1297  
C3H7Cl  1-Chloropropane  1298  
C3H7Cl  2-Chloropropane  1299  
C3H7Cl  Cyclopropane  hydrogen chloride (1/1)  1300  
C3H7ClNOP  2-Chloro-3-methyl-1,3,2-oxazaphospholane  1301  
C3H7ClO  3-Chloro-1-propanol  1302  
C3H7ClO  Chloromethyl ethyl ether  1303  
C3H7Cl2P  Dichloroisopropylphosphine  1304  
C3H7F  1-Fluoropropane  1305  
C3H7F  2-Fluoropropane  1306  
C3H7F  Cyclopropane  hydrogen fluoride (1/1)  1307  
C3H7FO  1-Fluoro-2-propanol  1308  
C3H7FO  2-Fluoro-1-propanol  1309  
C3H7FO  3-Fluoro-1-propanol  1310  
C3H7FO  Fluoromethyl ethyl ether  1311  
C3H7FO  Oxetane  hydrogen fluoride (1/1)  1312  
C3H7F2P  Difluoroisopropylphosphine  1313  
C3H7I  1-Iodopropane  1314  
C3H7I  2-Iodopropane  1315  
C3H7N  (E)-N-Ethylidenemethylamine  1316  
C3H7N  Allylamine  1317  
C3H7N  Cyclopropylamine  1318  
C3H7N  1-Methylaziridine  1319  
C3H7N  2-Methylaziridine  1320  
C3H7N  Azetidine  1321  
C3H7N  Ethane - hydrogen cyanide (1/1)  1322  
C3H7NO  N-Methylacetamide  1323  
C3H7NO  (Z)-Propionaldehyde oxime  1324  
C3H7NO  (E)-Propionaldehyde oxime  1325  
C3H7NO  N,N-Dimethylformamide  1326  
C3H7NO  3-Azetidinol  1327  
C3H7NOSi  Dimethylsilyl isocyanate  1328  
C3H7NO2  Propyl nitrite  1329  
C3H7NO2  Isopropyl nitrite  1330  
C3H7NO2  L-Alanine  1331  
C3H7NO2  2-Nitropropane  1332  
C3H7NO2  Glycine methyl ester  1333  
C3H7NS  Thiazolidine  1334  
C3H7NSSi  Dimethylsilyl isothiocyanate  1335  
C3H7NSi  Dimethylsilylmethanenitrile  1336  
C3H7O3P  2-Methoxy-1,3,2-dioxaphospholane  1337  
C3H7P  cis-2-Methylphosphirane  1338  
C3H7P  trans-2-Methylphosphirane  1339  
C3H7P  Cyclopropylphosphine  1340  


C3H8  Propane  1341  
C3H8BrClSi  (Bromomethyl)chlorodimethylsilane  1342  
C3H8Ge  Cyclopropylgermane  1343  
C3H8N2  trans-1,2-Dimethyldiaziridine  1344  
C3H8O  Ethyl methyl ether  1345  
C3H8O  Cyclopropane  water (1/1)  1346  
C3H8OS  2-(Methylthio)ethanol  1347  
C3H8OS  1-Mercapto-2-propanol  1348  
C3H8O2  2-Methoxyethanol  1349  
C3H8O2  Dimethoxymethane  1350  
C3H8O2  1,2-Propanediol  1351  
C3H8O2  1,3-Propanediol  1352  
C3H8S  1-Propanethiol  1353  
C3H8S  2-Propanethiol  1354  
C3H8S  Ethyl methyl sulfide  1355  
C3H8S2  Methyl ethyl disulfide  1356  
C3H8Se  2-Propaneselenol  1357  
C3H8Si  Allylsilane  1358  
C3H8Si  Methylvinylsilane  1359  
C3H8Si  Dimethyl(methylene)silane  1360  
C3H8Si  Cyclopropylsilane  1361  
C3H8Si  Silacyclobutane  1362  


C3H9Al  Trimethylaluminum  1363  
C3H9AlCl3N  Trimethylamine  aluminum trichloride (1/1)  1364  
C3H9As  Trimethylarsine  1365  
C3H9AsF2  Trimethylarsenic difluoride  1366  
C3H9AsO  Trimethylarsine oxide  1367  
C3H9AsO3  Trimethylarsenite  1368  
C3H9AsS  Trimethylarsine sulfide  1369  
C3H9B  Trimethylborane  1370  
C3H9BBr3N  Trimethylamine  boron tribromide (1/1)  1371  
C3H9BBr3P  Trimethylphosphine  boron tribromide (1/1)  1372  
C3H9BCl3N  Trimethylamine  boron trichloride (1/1)  1373  
C3H9 BCl3P  Trimethylphosphine  boron trichloride (1/1)  1374  
C3H9BF3N  Trimethylamine  boron trifluoride (1/1)  1375  
C3H9BI3N  Trimethylamine  boron triiodide (1/1)  1376  
C3H9 BI3P  Trimethylphosphine  boron triiodide (1/1)  1377  
C3H9BO  Methoxydimethylborane  1378  
C3H9BO2  Dimethoxymethylborane  1379  
C3H9BO3  Trimethoxyborane  1380  
C3H9BS  Dimethyl(methylthio)borane  1381  
C3H9BS2  Methylbis(methylthio)borane  1382  
C3H9BS3  Tris(methylthio)borane  1383  
C3H9Bi  Trimethylbismuth  1384  
C3H9BrGe  Bromotrimethylgermane  1385  
C3H9BrSi  Bromotrimethylsilane  1386  
C3H9Br2N  Dibromine - trimethylamine (1/1)  1387  
C3H9ClGe  Chlorotrimethylgermane  1388  
C3H9ClOSi  Chloromethoxydimethylsilane  1389  
C3H9ClSi  Chlorotrimethylsilane  1390  
C3H9ClSn  Chlorotrimethylstannane  1391  
C3H9Cl2Sb  Dichlorotrimethylantimony  1392  
C3H9FSi  Trimethylfluorosilane  1393  
C3H9F2P  Difluorotrimethylphosphorane  1394  
C3H9F2Ta  Difluorotrimethyltantalum  1395  
C3H9Ga  Trimethylgallium  1396  
C3H9In  Trimethylindium  1397  
C3H9N  Trimethylamine  1398  
C3H9N  Cyclopropane  ammonia (1/1)  1399  
C3H9NO  N,N,O-Trimethylhydroxylamine  1400  
C3H9NO  2-Methoxyethylamine  1401  
C3H9NO  2-Amino-1-propanol  1402  
C3H9NO  3-Amino-1-propanol  1403  
C3H9NO  Trimethylamine N-oxide  1404  
C3H9NOSSi  1,1,1-Trimethyl-N-sulfinylsilanamine  1405  
C3H9NO2S  N,N-Dimethylmethanesulfonamide  1406  
C3H9NO2S  Trimethylamine - sulfur dioxide (1/1)  1407  
C3H9N3Si  Azidotrimethylsilane  1408  
C3H9OP  Trimethylphosphine oxide  1409  
C3H9O3P  Trimethyl phosphite  1410  
C3H9O4P  Trimethyl phosphate  1411  
C3H9P  Isopropylphosphine  1412  
C3H9P  Trimethylphosphine  1413  
C3H9PS  Dimethyl(methylthio)phosphine  1414  
C3H9PS  Trimethylphosphine sulfide  1415  


C3H10BN  Dimethyl(methylamino)borane  1422  
C3H10BrN  Trimethylamine - hydrogen bromide (1/1)  1423  
C3H10BrP  Trimethylphosphine  hydrogen bromide (1/1)  1424  
C3H10ClN  Trimethylamine - hydrogen chloride (1/1)  1425  
C3H10ClP  Trimethylphosphine  hydrogen chloride (1/1)  1426  
C3H10FN  Trimethylamine - hydrogen fluoride (1/1)  1427  
C3H10Ge  Trimethylgermane  1428  
C3H10IN  Trimethylamine  hydrogen iodide (1/1)  1429  
C3H10O  Propane  water (1/1)  1430  
C3H10OSi  Methoxydimethylsilane  1431  
C3H10Si  Ethylmethylsilane  1432  
C3H10Si  Trimethylsilane  1433  
C3H10Si  Propylsilane  1434  
C3H10Sn  Trimethylstannane  1435  
C3H11BFN  Trimethylamine  fluoroborane (1/1)  1436  
C3H11BN2  Methylbis(methylamino)borane  1437  
C3H11NO  Trimethylamine  water (1/1)  1438  
C3H11NSi  N,N,1-Trimethylsilanamine  1439  
C3H12AlN  Trimethylamine  aluminum hydride (1/1)  1440  
C3H12BN  Trimethylamine  borane (1/1)  1441  
C3H12BN3  Tris(methylamino)borane  1442  
C3H12BP  Trimethylphosphine - borane (1/1)  1443  
C3H12GaN  Trimethylamine  gallium hydride (1/1)  1444  
C3H12GaN  Trimethylgallium  ammonia (1/1)  1445  
C3H13NSi2  N,N-Bis(methylsilyl)methylamine  1446  
C3H13NSi2  2-Isopropyldisilazane  1447  
C3H14B4  2,4-(1-Methyl-1,2-ethanediyl)tetraborane(10)  1448  
C3H15NSi3  Tris(methylsilyl)amine  1449  



C3IN  3-Iodo-2-propynenitrile  1450  
C3N  Cyanoethynyl  1451  
C3N2O  Carbonyl cyanide  1452  
C3N3P  Tricyanophosphine  1453  
C3O  Tricarbon monoxide  1454  
C3OS  3-Thioxo-1,2-propadien-1-one  1455  
C3O2  Tricarbon dioxide  1456  
C3O6  Carbon dioxide trimer  1457  
C3S  Tricarbon monosulfide  1458  
C3S2  Tricarbon disulfide  1459  



C4  Tetracarbon  1460  
C4Br2O2  3,4-Dibromo-3-cyclobutene-1,2-dione  1461  
C4Cl2F4  1,2-Dichloro-3,3,4,4-tetrafluorocyclobutene  1462  
C4Cl2F6  1,1-Dichlorohexafluorocyclobutane  1463  
C4Cl2O2  3,4-Dichloro-3-cyclobutene-1,2-dione  1464  
C4Cl2O3  Dichloromaleic anhydride  1465  
C4Cl6  Hexachloro-1,3-butadiene  1466  
C4Cu2F6O4  Dicopper bis(trifluoroacetate)  1467  
C4F4O3  3,3,4,4-Tetrafluorooxolan-2,5-dione  1468  
C4F6  Hexafluoro-2-butyne  1469  
C4F6  Hexafluoro-1,3-butadiene  1470  
C4F6  Hexafluorocyclobutene  1471  
C4F6NS2  4,5-Bis(trifluoromethyl)-1,3,2-dithiazolyl  1472  
C4F6OS2  Bis[(trifluoromethyl)thio]ethenone  1473  
C4F6O3  Hexafluoroacetic anhydride  1474  
C4F6S  Hexafluoro-2,5-dihydrothiophene  1475  
C4F6S2  3,4-Bis(trifluoromethyl)-1,2-dithiete  1476  
C4F6Se2  3,4-Bis(trifluoromethyl)-1,2-diselenete  1477  
C4F7NO  1,2,2,3,3,4,4-Heptafluoro-1-nitrosocyclobutane  1478  
C4F8  Octafluorocyclobutane  1479  
C4F8N3P  2,2-Difluoro-4,6-bis(trifluoromethyl)- 1480  
C4F8OS  Octafluorotetrahydrothiophene 1-oxide  1481  
C4F8O2S  Octafluorotetrahydrothiophene 1,1-dioxide  1482  
C4F8S  Octafluorotetrahydrothiophene  1483  
C4F9I  Tris(trifluoromethyl)methyl iodide  1484  
C4F10P2  2,2,4,4-Tetrafluoro-1,3-bis(trifluoromethyl)- 1485  
C4F12Ge  Tetrakis(trifluoromethyl)germane  1486  
C4F12N2  Tetrakis(trifluoromethyl)hydrazine  1487  
C4F12P2  Tetrakis(trifluoromethyl)diphosphane  1488  
C4F12S  Octafluorotetrahydrothiophene tetrafluoride  1489  
C4F12Sn  Tetrakis(trifluoromethyl)tin  1490  


C4H  1,3-Butadiynyl  1491  
C4HBr  1-Bromo-1,3-butadiyne  1492  
C4HCl  1-Chloro-1,3-butadiyne  1493  
C4HCoO4  Tetracarbonylhydrocobalt  1494  
C4HF9  1,1,1,3,3,3-Hexafluoro-2-(trifluoromethyl)propane  1495  
C4HF9O  1,1,1,3,3,3-Hexafluoro-2-(trifluoromethyl)-2-propanol  1496  
C4HNO  2-Propynenitrile - carbon monoxide (1/1)  1497  
C4HNO2  2-Propynenitrile  carbon dioxide (1/1)  1498  
C4HNO6  Hydrogen cyanide - carbon dioxide (1/3)  1499  


C4H2  1,3-Butadiyne  1500  
C4H 2 + 
 1,3-Butadiyne cation  1501  
C4H2Cl2N2  3,6-Dichloropyridazine  1502  
C4H2Cl2O2  (E)-1,4-Dioxo-2-butenyl dichloride  1503  
C4H2Cl4  (E,E)-1,2,3,4-Tetrachloro-1,3-butadiene  1504  
C4H2F4  3,3,4,4-Tetrafluorocyclobutene  1505  
C4H2F6  (Z)-1,1,1,4,4,4-Hexafluoro-2-butene  1506  
C4H2F6  (E)-1,1,1,4,4,4-Hexafluoro-2-butene  1507  
C4H2F6  1,1-Bis(trifluoromethyl)ethene  1508  
C4H2FeO4  Dihydrotetracarbonyliron(II)  1509  
C4H2I2  Iodoacetylene dimer  1510  
C4H2O  1,2,3-Butatrien-1-one  1511  
C4H2O3  2,5-Furandione  1512  


C4H3BrO  2-Bromofuran  1513  
C4H3BrO  3-Bromofuran  1514  
C4H3BrS  2-Bromothiophene  1515  
C4H3BrS  3-Bromothiophene  1516  
C4H3ClO  2-Chlorofuran  1517  
C4H3ClO2S2  2-Thiophenesulfonyl chloride  1518  
C4H3ClS  2-Chlorothiophene  1519  
C4H3ClS  3-Chlorothiophene  1520  
C4H3Cl2PS  Dichloro-2-thienylphosphine  1521  
C4H3CoGeO4  Tetracarbonylgermylcobalt  1522  
C4H3CoO4Si  Tetracarbonyl(silyl)cobalt(I)  1523  
C4H3F3  1,1,1-Trifluoro-2-butyne  1524  
C4H3N  2-Propynyl isocyanide  1525  
C4H3N  Methylcyanoacetylene  1526  
C4H3N  3-Butynenitrile  1527  
C4H3N  3-Cyanocyclopropene  1528  
C4H3NO2  1H-Pyrrole-2,5-dione  1529  
C4H3NS  3-Thiocyanato-1-propyne  1530  


C4H4  Butatriene  1531  
C4H4  Vinylacetylene  1532  
C4H4  Methylenecyclopropene  1533  
C4H4  Acetylene dimer  1534  
C4H4ArO  Furan  argon (1/1)  1535  
C4H4ArS  Thiophene  argon (1/1)  1536  
C4H4Ar2O  Furan  argon (1/2)  1537  
C4H4Br4  1,2,3,4-Tetrabromocyclobutane  1538  
C4H4Cl2  (Z,Z)-1,4-Dichloro-1,3-butadiene  1539  
C4H4Cl2  (E,Z)-1,4-Dichloro-1,3-butadiene  1540  
C4H4Cl2  (E,E)-1,4-Dichloro-1,3-butadiene  1541  
C4H4Cl2  2,3-Dichloro-1,3-butadiene  1542  
C4H4Cl2  cis-3,4-Dichlorocyclobutene  1543  
C4H4Cl2OSi  2,2-Dichloro-1-oxa-2-sila-3,5-cyclohexadiene  1544  
C4H4Cl4Ge2  1,1,4,4-Tetrachloro-1,4-digerma-2,5-cyclohexadiene  1545  
C4H4F2  1,4-Difluoro-2-butyne  1546  
C4H4F4O2P2  1,4-Bis(difluorophosphinooxy)-2-butyne  1547  
C4H4F6  1,1,1,4,4,4-Hexafluorobutane  1548  
C4H4Ge2I4  1,1,4,4-Tetraiodo-1,4-digerma-2,5-cyclohexadiene  1549  
C4H4N2  Succinonitrile  1550  
C4H4N2  Ethylene diisocyanide  1551  
C4H4N2  Pyridazine  1552  
C4H4N2  Pyrimidine  1553  
C4H4N2  Pyrazine  1554  
C4H4N2O2  2,4(1H,3H)-Pyrimidinedione  1555  
C4H4N6  2,3-Diazido-1,3-butadiene  1556  
C4H4N6O6  2-Methyl-4-trinitromethyl-2H-1,2,3-triazole  1557  
C4H4O  2-Ethynyloxirane  1558  
C4H4O  Furan  1559  
C4H4O  Diacetylene - water (1/1)  1560  
C4H4O  Ketene  acetylene (1/1)  1561  
C4H4O  Methylacetylene  carbon monoxide (1/1)  1562  
C4H4O2  (E)-2-Butenedial  1563  
C4H4O2  1,2-Cylobutanedione  1564  
C4H4O2  1,4-Dioxin  1565  
C4H4O3  Oxolan-2,5-dione  1566  
C4H4O3  Cyclobutadiene ozonide  1567  
C4H4O3  2,4-Dioxabicyclo[3.1.0]hexan-3-one  1568  
C4H4O3S  Furan  sulfur dioxide (1/1)  1569  
C4H4S  Thiophene  1570  
C4H4S2  1,2-Dithiin  1571  
C4H4Se  Selenophene  1572  


C4H5ArN  Argon - pyrrole (1/1)  1573  
C4H5BrCl2  1,1-Dichloro-2-(bromomethyl)cyclopropane  1574  
C4H5Cl  (Z)-1-Chloro-1,3-butadiene  1575  
C4H5Cl  (E)-1-Chloro-1,3-butadiene  1576  
C4H5Cl  2-Chloro-1,3-butadiene  1577  
C4H5Cl  4-Chloro-1,2-butadiene  1578  
C4H5Cl  1-Chloro-2-butyne  1579  
C4H5Cl  Vinylacetylene - hydrogen chloride (1/1)  1580  
C4H5ClO  (E)-2-Butenoyl chloride  1581  
C4H5ClO  2-Methyl-2-propenoyl chloride  1582  
C4H5ClO  Cyclopropanecarbonyl chloride  1583  
C4H5ClO  Furan  hydrogen chloride (1/1)  1584  
C4H5F  Vinylacetylene - hydrogen fluoride (1/1)  1585  
C4H5F3  3,3,3-Trifluoro-2-methylpropene  1586  
C4H5N  3-Butenenitrile  1587  
C4H5N  (Z)-2-Butenenitrile  1588  
C4H5N  (E)-2-Butenenitrile  1589  
C4H5N  Methacrylonitrile  1590  
C4H5N  Cyclopropyl cyanide  1591  
C4H5N  Isocyanocyclopropane  1592  
C4H5N  Pyrrole  1593  
C4H5N  Acetylene - acetonitrile (1/1)  1594  
C4H5N  Methyl isocyanide  acetylene (1/1)  1595  
C4H5N  1,3-Butadiyne  ammonia (1/1)  1596  
C4H5NO  (Z)-3-Methoxy-2-propenenitrile  1597  
C4H5NO  (E)-3-Methoxy-2-propenenitrile  1598  
C4H5NO  Cyclopropyl isocyanate  1599  
C4H5NO  2-Methyloxazole  1600  
C4H5NO  3-Methylisoxazole  1601  
C4H5NO  4-Methyloxazole  1602  
C4H5NO  5-Methyloxazole  1603  
C4H5NO  5-Methylisoxazole  1604  
C4H5NO2S  (Z)-3-(Methylsulfonyl)-2-propenenitrile  1605  
C4H5NO2S  (E)-3-(Methylsulfonyl)-2-propenenitrile  1606  
C4H5NS  Cyclopropyl isothiocyanate  1607  
C4H5N3  2-Azido-1,3-butadiene  1608  
C4H5N3  1-Azido-2-butyne  1609  
C4H5N3  2-Aminopyrimidine  1610  


C4H6  1,2-Butadiene  1611  
C4H6  1,3-Butadiene  1612  
C4H6  1-Butyne  1613  
C4H6  2-Butyne  1614  
C4H6  Methylenecyclopropane  1615  
C4H6  1-Methylcyclopropene  1616  
C4H6  Cyclobutene  1617  
C4H6  Bicyclo[1.1.0]butane  1618  
C4H6  Ethylene  acetylene (1/1)  1619  
C4H6BF6N  (Dimethylamino)bis(trifluoromethyl)borane  1620  
C4H6B2  2,3,4,5-Tetracarbahexaborane(6)  1621  
C4H6BrCl  cis-1-Bromo-3-chlorocyclobutane  1622  
C4H6BrCl  trans-1-Bromo-3-chlorocyclobutane  1623  
C4H6BrN  4-Bromobutanenitrile  1624  
C4H6Br2  cis-1,3-Dibromocyclobutane  1625  
C4H6Br2  trans-1,3-Dibromocyclobutane  1626  
C4H6Br2O2S  trans-3,4-Dibromotetrahydrothiophene 1,1-dioxide  1627  
C4H6ClN  4-Chlorobutanenitrile  1628  
C4H6ClOP  Divinylphosphinic chloride  1629  
C4H6ClOP  1-Chloro-2,3-dihydro-1H-phosphole 1-oxide  1630  
C4H6ClOP  1-Chloro-2,5-dihydro-1H-phosphole 1-oxide  1631  
C4H6ClO2P  2-Chloro-4,5-dimethyl-1,3,2-dioxaphosphole  1632  
C4H6Cl2  (Z)-1,4-Dichloro-2-butene  1633  
C4H6Cl2  3-Chloro-2-chloromethyl-1-propene  1634  
C4H6Cl2Si  1,1-Dichlorosilacyclopent-3-ene  1635  
C4H6Cu2O4  Di--acetato-dicopper(I)  1636  
C4H6F2Si  1,1-Difluorosilacyclopent-3-ene  1637  
C4H6N4  2-Methyl-5-vinyl-2H-tetrazole  1638  
C4H6O  Divinyl ether  1639  
C4H6O  (E)-2-Butenal  1640  
C4H6O  2,3-Butadien-1-ol  1641  
C4H6O  1-Methoxypropadiene  1642  
C4H6O  3-Buten-2-one  1643  
C4H6O  Dimethylketene  1644  
C4H6O  2-Methyl-2-propenal  1645  
C4H6O  3-Methoxy-1-propyne  1646  
C4H6O  3-Butyn-2-ol  1647  
C4H6O  Cyclopropylmethanal  1648  
C4H6O  2-Ethenyloxirane  1649  
C4H6O  3-Methyleneoxetane  1650  
C4H6O  Cyclobutanone  1651  
C4H6O  2,5-Dihydrofuran  1652  
C4H6O  1-Oxaspiro[2.2]pentane  1653  
C4H6O  Ketene  ethylene (1/1)  1654  
C4H6O  Oxirane  acetylene (1/1)  1655  
C4H6OS  Divinyl sulfoxide  1656  
C4H6OSi  2-Furylsilane  1657  
C4H6O2  (E)-2-Butenoic acid  1658  
C4H6O2  Methyl acrylate  1659  
C4H6O2  2,3-Butanedione  1660  
C4H6O2  Cyclopropanecarboxylic acid  1661  
C4H6O2  2,2'-Bioxirane  1662  
C4H6O2  4-Methyl-2-oxetanone  1663  


C4H7Br  3-Bromo-2-methyl-1-propene  1675  
C4H7Br  4-Bromo-1-butene  1676  
C4H7Br  (Bromomethyl)cyclopropane  1677  
C4H7Br  Bromocyclobutane  1678  
C4H7BrO  3-Bromotetrahydrofuran  1679  
C4H7Cl  1-Chloro-2-methyl-1-propene  1680  
C4H7Cl  3-Chloro-2-methyl-1-propene  1681  
C4H7Cl  (E)-1-Chloro-2-butene  1682  
C4H7Cl  3-Chloro-1-butene  1683  
C4H7Cl  4-Chloro-1-butene  1684  
C4H7Cl  (Chloromethyl)cyclopropane  1685  
C4H7Cl  Chlorocyclobutane  1686  
C4H7Cl  Methylenecyclopropane  hydrogen chloride (1/1)  1687  
C4H7ClO  Isobutyryl chloride  1688  
C4H7ClO  2,5-Dihydrofuran  hydrogen chloride (1/1)  1689  
C4H7Cl2P  (2-Methyl-1-propenyl)phosphonous dichloride  1690  
C4H7F  3-Fluoro-2-methyl-1-propene  1691  
C4H7F  4-Fluoro-1-butene  1692  
C4H7F  Fluorocyclobutane  1693  
C4H7F  Methylenecyclopropane  hydrogen fluoride (1/1)  1694  
C4H7FO  Isobutyryl fluoride  1695  
C4H7FO  2,5-Dihydrofuran - hydrogen fluoride (1/1)  1696  
C4H7F3O  1,1,1-Trifluoro-2-methyl-2-propanol  1697  
C4H7N  Isobutyronitrile  1698  
C4H7N  N-Methyl-2-propynylamine  1699  
C4H7N  3-Butynylamine  1700  
C4H7N  3,4-Dihydro-2H-pyrrole  1701  
C4H7N  Cyclopropane  hydrogen cyanide (1/1)  1702  
C4H7NO  3-Methoxypropionitrile  1703  
C4H7NO  Propyl isocyanate  1704  
C4H7NO  Isopropyl isocyanate  1705  
C4H7NO  N-Acetylaziridine  1706  
C4H7NO  Pyrrole  water (1/1)  1707  
C4H7NO2  Diacetamide  1708  
C4H7NS  Isopropyl isothiocyanate  1709  
C4H7NSi  N-Silylpyrrole  1710  
C4H7P  2,5-Dihydro-1H-phosphole  1711  


C4H8  1-Butene  1712  
C4H8  (E)-2-Butene  1713  
C4H8  (Z)-2-Butene  1714  
C4H8  2-Methyl-1-propene  1715  
C4H8  Methylcyclopropane  1716  
C4H8  Cyclobutane  1717  
C4H8AsCl  1-Chloroarsolane  1718  
C4H8BrCl  2-Bromo-1-chloro-2-methylpropane  1719  
C4H8Br2  1,3-Dibromobutane  1720  
C4H8Br2  1,4-Dibromobutane  1721  
C4H8ClN  N-Chloropyrrolidine  1722  
C4H8Cl2  1,3-Dichlorobutane  1723  
C4H8Cl2  1,4-Dichlorobutane  1724  
C4H8F2  1,4-Difluorobutane  1725  
C4H8F2Si  1,1-Difluorosilacyclopentane  1726  
C4H8Ge  1,1-Dimethyl-1H- germirene  1727  
C4H8N2  3-(Methylamino)propanenitrile  1728  
C4H8N2  (E,E)-Acetaldehyde ethylidenehydrazone  1729  
C4H8N2  1,1'-Biaziridine  1730  
C4H8N2O2  N-Nitropyrrolidine  1731  
C4H8O  (E)-2-Buten-1-ol  1732  
C4H8O  (Z)-2-Buten-1-ol  1733  
C4H8O  3-Buten-2-ol  1734  
C4H8O  2-Butanone  1735  
C4H8O  Isobutyraldehyde  1736  
C4H8O  Ethyl vinyl ether  1737  
C4H8O  2-Methoxy-1-propene  1738  
C4H8O  2-Methyl-2-propen-1-ol  1739  
C4H8O  3-Buten-1-ol  1740  
C4H8O  2-Ethyloxirane  1741  
C4H8O  cis-2,3-Dimethyloxirane  1742  
C4H8O  trans-2,3-Dimethyloxirane  1743  
C4H8O  2-Methyloxetane  1744  
C4H8O  Tetrahydrofuran  1745  
C4H8OS  3-Methoxythietane  1746  
C4H8OS  Tetrahydrothiophene 1-oxide  1747  
C4H8OS  1,4-Oxathiane  1748  
C4H8O2  Ethyl acetate  1749  
C4H8O2  1-(2-Oxiranyl)ethanol  1750  
C4H8O2  2,3-Epoxy-1-butanol  1751  
C4H8O2  2-Methyl-1,3-dioxolane  1752  
C4H8O2  1,3-Dioxane  1753  
C4H8O2  1,4-Dioxane  1754  
C4H8O2S  Sulfolane  1755  
C4H8O3  Ethyl glycolate  1756  
C4H8O3S  cis-4,5-Dimethyl-1,3,2-dioxathiolane 2-oxide  1757  
C4H8O3S  trans-4,5-Dimethyl-1,3,2-dioxathiolane 2-oxide  1758  
C4H8O4  1,3,5,7-Tetraoxacyclooctane  1759  
C4H8O4  Acetic acid dimer  1760  
C4H8S  Ethyl vinyl sulfide  1761  
C4H8S  3-Butene-1-thiol  1762  
C4H8S  Allyl methyl sulfide  1763  
C4H8S  Cyclopropyl methyl sulfide  1764  


C4H9Br  1-Bromobutane  1773  
C4H9Br  t-Butyl bromide  1774  
C4H9Cl  1-Chlorobutane  1775  
C4H9Cl  2-Chlorobutane  1776  
C4H9Cl  t-Butyl chloride  1777  
C4H9Cl  Isobutyl chloride  1778  
C4H9Cl  Methylcyclopropane - hydrogen chloride (1/1)  1779  
C4H9ClO  4-Chloro-1-butanol  1780  
C4H9ClSi  Chlorodimethylvinylsilane  1781  
C4H9Cl2P  t-Butyldichlorophosphine  1782  
C4H9F  t-Butyl fluoride  1783  
C4H9F2P  t-Butyldifluorophosphine  1784  
C4H9F3IN  Trimethylamine - trifluoroiodomethane (1/1)  1785  
C4H9GeN  Trimethylcyanogermane  1786  
C4H9I  1-Iodobutane  1787  
C4H9N  N-Methylallylamine  1788  
C4H9N  3-Butenylamine  1789  
C4H9N  (Aminomethyl)cyclopropane  1790  
C4H9N  2,2-Dimethylaziridine  1791  
C4H9N  Pyrrolidine  1792  
C4H9NOSi  Trimethylsilyl isocyanate  1793  
C4H9NO2  2-Methyl-2-nitropropane  1794  
C4H9NO2  t-Butyl nitrite  1795  
C4H9NO2  Alanine methyl ester  1796  
C4H9NS  Tetrahydro-1,4-thiazine  1797  
C4H9NSSi  Trimethylsilyl isothiocyanate  1798  
C4H9NSi  Trimethylsilyl cyanide  1799  
C4H9OP  Acetyldimethylphosphine  1800  


C4H10  Butane  1801  
C4H10  Isobutane  1802  
C4H10BClN2  2-Chloro-1,3-dimethyl-1,3,2-diazaborolidine  1803  
C4H10Cd  Diethylcadmium  1804  
C4H10ClN  N-Chloro-N-ethylethanamine  1805  
C4H10ClN2P  2-Chloro-1,3-dimethyl-1,3,2-diazaphospholidine  1806  
C4H10ClP  Chlorodiethylphosphine  1807  
C4H10Cl2Si  Bis(chloromethyl)dimethylsilane  1808  
C4H10Ge  Cyclobutylgermane  1809  
C4H10Ge  Germanocyclopentane  1810  
C4H10GeO2  Trimethylgermyl formate  1811  
C4H10NP  Trimethylphosphine - hydrogen cyanide (1/1)  1812  
C4H10N2  (E)-(Acetaldehyde dimethylhydrazone)  1813  
C4H10N2  1,2-Dimethyl-1,2-diazetidine  1814  
C4H10N2  Piperazine  1815  
C4H10N2  Trimethylamine  hydrogen cyanide (1/1)  1816  
C4H10O  Methyl propyl ether  1817  
C4H10O  Isopropyl methyl ether  1818  
C4H10O  Diethyl ether  1819  
C4H10O  t-Butyl alcohol  1820  
C4H10O2  3-Methoxy-1-propanol  1821  
C4H10O2  1,2-Dimethoxyethane  1822  
C4H10O2  1,4-Butanediol  1823  
C4H10O3  Trimethoxymethane  1824  
C4H10O4S2  1,2-Bis(methylsulfonyl)ethane  1825  
C4H10SSi  3,3-Dimethyl-1-thia-3-silacyclobutane  1826  
C4H10Si  (Cyclopropylmethyl)silane  1827  
C4H10Si  Cyclobutylsilane  1828  
C4H10Si  Silacyclopentane  1829  
C4H10Zn  Diethylzinc  1830  
C4H11N  N,N-Dimethylethylamine  1831  
C4H11N  Diethylamine  1832  
C4H11N  t-Butylamine  1833  
C4H11P  t-Butylphosphine  1834  
C4H11P  Ethyldimethylphosphine  1835  
C4H11P  Trimethyl(methylene)phosphorane  1836  
C4H12Al2Cl2  Dimethylaluminum chloride dimer  1837  
C4H12Al2Cl4N2  Bis(-dimethylamido)-bis(dichloroaluminum)  1838  
C4H12As2  Tetramethyldiarsine  1839  
C4H12AuP  Methyl(trimethylphosphine)gold(I)  1840  
C4H12B2O  Dimethylborinic anhydride  1841  
C4H12B2S2  Bis(dimethylboryl)disulfane  1842  
C4H12ClN2P  Bis(dimethylamino)chlorophosphine  1843  
C4H12Cl2Ga2  Di--chloro-bis(dimethylgallium)  1844  
C4H12Cl2OSi2  1,3-Dichloro-1,1,3,3-tetramethyldisiloxane  1845  
C4H12Cl2Si2  1,2-Dichloro-1,1,2,2-tetramethyldisilane  1846  
C4H12Ge  Tetramethylgermane  1847  
C4H12N2  Tetramethylhydrazine  1848  
C4H12N2OS  N,N,N',N'-Tetramethylsulfurous diamide  1849  
C4H12N2O2S  N,N,N',N'-Tetramethylsulfuric diamide  1850  
C4H12N2S  N,N'-Thiobis(dimethylamine)  1851  
C4H12N2Sn  Bis(dimethylamino)tin(II)  1852  
C4H12ORe  Tetramethyloxorhenium  1853  



C4N2  2-Butynedinitrile  1881  
C4N4  Cyanogen dimer  1882  
C4N4O4Si  Silicon tetraisocyanate  1883  
C4NiO4  Tetracarbonylnickel(0)  1884  
C4O  4-Oxo-1,2,3-butatrienylidene  1885  

