| CAS编号 | 中文名 | 英文名 | 分子式 | 分子量 | 熔点 | 沸点 |
| 201941-16-4 | | carbamic acid, butyl(2-(heptyloxy)phenyl)-, 2-(1-piperidinyl)ethyl ester, monoh | | | | |
| 201942-90-7 | | (R)-2-(2-hydroxyphenyl)thiazolidine-4-carboxylic acid | C10H11NO3S | 225.26 | | |
| 201942-94-1 | | (R)-2-thiophen-2-ylthiazolidine-4-carboxylic acid | | | | |
| 201943-63-7 | | ly341495 | C20H19NO5 | 353.37 | | |
| 20195-06-6 | | phosphorothioic acid, o,o-diethyl s-propyl ester | | | | |
| 20195-07-7 | | phosphorothioic acid, s-butyl o,o-diethyl ester | | | | |
| 20195-08-8 | | phosphoric acid diethyl ester pentyl ester | C9H21O4P | 224.23 | | |
| 20195-12-4 | | phosphorothioic acid, o,o-diethyl s-heptyl ester | | | | |
| 20195-13-5 | | phosphoric acid, diethyl octyl ester | C12H27O4P | 266.31 | | |
| 20195-14-6 | | phosphorothioic acid, o,o-diethyl s-octyl ester | | | | |
| 20195-16-8 | | phosphoric acid decyl ester diethyl ester | C14H31O4P | 294.37 | | |
| 20195-20-4 | | 3',4'-dihydroxy-2-(hexahydro-1h-azepin-1-yl)-acetophenon | | | | |
| 20195-22-6 | | 2,4-dinitrobenzoyl chloride | C7H3ClN2O5 | 230.56 | | |
| 20195-23-7 | 辛酸铬 | Octanoic acid,chromium salt | C8H16O2·xCr | | | |
| 2019586-97-9 | 4-(甲氨基)苯基五氟化硫 | N-Methyl-4-(pentafluoro-l6-sulfanyl)aniline | C7H8F5NS | 233.2 | | |
| 20196-21-8 | | 3-thiomorpholinone | C4H7NOS | 117.17 | | 349.3°C |
| 20196-71-8 | | (S)-(-)-1,2-di-o-benzylglycerol | .4 | 272.34 | | 153℃(0.4 |
| 20196-89-8 | 山奈酚-7-o-鼠李糖苷 | kaempferol 7-o-rhamnoside | | | | |
| 2019631-71-9 | (3-甲氧基-4-甲基苯基)氨基甲酸叔丁酯 | tert-Butyl (3-methoxy-4-methylphenyl)carbamate | C13H19NO3 | 237.29 | | 288.6±33.0 °C(Predicted) |
| 20197-00-6 | | N-Methylbisdeoxocycloshowdomycin acetonide hydrobromide | C13H22BrNO4 | 336.22 | | |
| 20197-09-5 | | plus-octopinic acid | C8H16N2O4 | 204.22 | | |
| 20197-71-1 | | methyl 2-amino-4,5-diethoxybenzoate | | | | |
| 20197-72-2 | 2-氨基-4,5-二乙氧基苯甲酸 | 2-amino-4,5-diethoxybenzoic acid | C11H15NO4 | 225.24 | 135-136 °C | 379.8±42.0 °C(Predicted) |
| 20197-75-5 | 1,4-苯并二噁烷-6-甲酸甲酯 | methyl 1,4-benzodioxan-6-carboxylate | C10H10O4 | 194.18 | | |
| 20197-76-6 | | 7-amino-2,3-dihydro-benzo[1,4]dioxine-6-carboxylic acid methyl ester | | | | |
| 20197-80-2 | | 6,7-diethoxy-2,4(1h,3h)-quinazolinedione | | | | |
| 20197-86-8 | 2-氯-6,7-二甲氧基-1H-喹唑啉-4-酮 | 2-Chloro-6,7-dimethoxy-4(3H)-quinazolinone | C10H9ClN2O3 | 240.64 | 270-272 ℃ | |
| 20197-87-9 | 2,6-二氯-4-羟基喹唑啉 | 2,6-dichloroquinazolin-4(3h)-one | C8H4Cl2N2O | 215.0362 | | |
| 20197-88-0 | | 6,7-dimethoxy-3-methylquinazoline-2,4(1h,3h)-dione | | | | |
| 20197-92-6 | 4,5-二甲氧基靛红酸酐 | 6,7-dimethoxy-1h-benzo[d][1,3]oxazine-2,4-dione | C10H9NO5 | 223.18 | | |
| 20197-96-0 | 2,7-二氯喹唑啉-4(3H)-酮 | 2,7-Dichloroquinazolin-4(3H)-one | C8H4Cl2N2O | 215.04 | | |
| 20197-97-1 | 2-氯-6-甲氧基喹唑啉-4(3H)-酮 | 2-Chloro-6-methoxyquinazolin-4(3H)-one | C9H7ClN2O2 | 210.62 | | |
| 20197-98-2 | 2-氯-7-甲氧基喹唑啉-4(3h)-酮 | 2-chloro-7-methoxyquinazolin-4(3h)-one | C9H7ClN2O2 | 210.62 | | |
| 20197-99-3 | | 2-chloro-8-methoxyquinazolin-4(3h)-one | | | | |
| 20198-19-0 | | 2-amino-3h-quinazolin-4-one | C8H7N3O | 161.16 | 314-315℃ | 358.8°C at 760 mmHg |
| 20198-49-6 | | 4-methyl-2-hexyne | C7H12 | 96.17 | | |
| 20198-77-0 | | 2,3-dichloro-n-ethyl-maleimid | C6H5Cl2NO2 | 194.017 | | |
| 20198-87-2 | | n-octadecyl-benzenemethanamin | | | | |
| 20198-92-9 | N-甲基十八烷酰胺 | OctadecanaMide, N-Methyl- | C19H39NO | 297.5191 | | 360.9±10.0 °C(Predicted) |
| 201985-01-5 | | b-alanine b-naphthylamide hydrobromide | | | | |
| 201985-38-8 | N,N,2,2-tetramethyl-3-hydroxypropanamide | | C7H15NO2 | 145.2 | | |
| 201988-47-8 | | bz-ala-betana | | | | |
| 201988-71-8 | | h-cit-bna . hbr | C16H20N4O2.HBr | 381.27 | | |
| 201989-27-7 | 1-碘-3-(2-硝基乙烯基)苯 | 1-Iodo-3-(2-nitrovinyl)benzene | C8H6INO2 | 275.043 | | 345.5±25.0 °C(Predicted) |
| 201989-32-4 | | 3-(2-HYDROXYETHYLAMINO)-5,5-DIMETHYL-2-CYCLOHEXEN-1-ONE | | | | |
| 20199-04-6 | | thio-benzamid s-oxide | | | | |
| 20199-19-3 | | 9-(9-anthrylethynyl)anthracene | | | | |
| 201990-16-1 | 2-(2-(2-Iodoethoxy)ethyl)isoindoline-1,3-dione | | C12H12INO3 | 345.13 | | |
| 201990-24-1 | | (1,1-dioxo-2,3-dihydro-1 h -thiophen-3-ylamino)-acetic acid | | | | |
| 201990-40-1 | | 4'-chloro-3'-methyl-2-phenylacetophenone | | | | |
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