| 1 | 640-01-7 | 2,2,6,6-tetramethyl-1-nitroso-4-piperidone | 2,2,6,6-tetramethyl-1-nitroso-4-piperidone | C9H16N2O2 | | |
| 2 | 640-02-8 | 1,3,5-Triazine-2,4-diamine, 1,6-dihydro-6,6-dimethyl-1-(3-phenylpropyl)- | 1,3,5-Triazine-2,4-diamine, 1,6-dihydro-6,6-dimethyl-1-(3-phenylpropyl)- | C14H21N5 | | |
| 3 | 640-03-9 | Antheraxanthin | Antheraxanthin | C40H56O3 | | |
| 4 | 640-06-2 | 6-Oxabicyclo[3.2.1]octan-7-one,1,3,4-trihydroxy- | 6-Oxabicyclo[3.2.1]octan-7-one,1,3,4-trihydroxy- | C7H10O5 | | |
| 5 | 640-15-3 | 甲基乙拌磷 | THIOMETON | C6H15O2PS3 | | |
| 6 | 640-17-5 | Ethanol, 2-amino-, dihydrogen phosphorothioate (ester), monosodium salt | Ethanol, 2-amino-, dihydrogen phosphorothioate (ester), monosodium salt | | | |
| 7 | 640-18-6 | 蚁酸 | Formic acide | | 化工 | 化工 |
| 8 | 640-19-7 | 氟乙酰胺 | fluoroacetamide | C2H4FNO | 标准品 | |
| 9 | 640-21-1 | 1,2-二溴-3,3-二甲基丁烷 | 1,2-DIBROMO-3,3-DIMETHYLBUTANE | C6H12Br2 | | |
| 10 | 640-25-5 | 5α-Oleana-2,12-diene | 5α-Oleana-2,12-diene | C30H48 | | |
| 11 | 640-28-8 | agathic acid | agathic acid | C20H30O4 | | |
| 12 | 640-30-2 | 7,14-dihydroxypregn-4-ene-3,20-dione | 7,14-dihydroxypregn-4-ene-3,20-dione | C21H30O4 | | |
| 13 | 640-33-5 | | Pregn-4-ene-3,20-dione,11,15-dihydroxy-, (11a,15a)- | C21H30O4 | | |
| 14 | 640-42-6 | | 1-Phenanthrenemethanol,1,2,3,4,4a,4b,5,6,7,9,10,10a-dodecahydro-1,4a-dimethyl-7-(1-methylethylidene)-,(1R,4aR,4bS,10aR)- | C20H32O | | |
| 15 | 640-43-7 | | Phenanthrene, tetradecahydro-1,1,4a-trimethyl-7-(1-methylethyl)-, (4aR,4bS,7R,8aS,10aS)- | C20H36 | | |
| 16 | 640-49-3 | β-Apocarotenal | β-Apocarotenal | C27H36O | | |
| 17 | 640-57-3 | 苯基对甲苯磺酸 | Phenyl p-tolyl sulphone | C13H12O2S | 有机原料;羧酸化合物 | |
| 18 | 640-59-5 | 3,4-dichloro-N-(4-chlorophenyl)benzenesulphonamide | 3,4-dichloro-N-(4-chlorophenyl)benzenesulphonamide | C12H8Cl3NO2S | | |
| 19 | 640-60-8 | 对甲苯亚磺酸苯酯 | p-Toluenesulfonic Acid Phenyl Ester | C13H12O3S | | |
| 20 | 640-61-9 | N-甲基对甲苯磺酰胺 | N-Methyl-p-toluenesulfonamide | C8H11NO2S | 芳烃;叠氮;偶氮;通用试剂;其他原料;医药中间体;重氮化合物;有机化工原料 | 医药中间体;树脂中间体 |
| 21 | 640-62-0 | (2,2-dimethyl-3-methylenecyclopentyl)acetic acid | (2,2-dimethyl-3-methylenecyclopentyl)acetic acid | C10H16O2 | | |
| 22 | 640-64-2 | Hydrazinecarboxamide, 2-(1,2,2-trimethylpropylidene)- | Hydrazinecarboxamide, 2-(1,2,2-trimethylpropylidene)- | C7H15N3O | | |
| 23 | 640-67-5 | 草酸锰 | Manganese oxalate | C2MnO4 | 原料;锰盐;无机盐;化工原料;医药原料;有机化工原料;无机化工原料 | 油漆 |
| 24 | 640-68-6 | D-缬氨酸 | D-Valine | C5H11NO2 | 原料;对照品;氨基酸;中间体;原料药;氨基酸类;生化试剂;医药原料;医用原料;化工原料 | 医药 |
| 25 | 640-73-3 | | Pregn-5-ene-11,20-dione,3-hydroxy-, (3b)- | C21H30O3 | | |
| 26 | 640-79-9 | 甘氨鹅脱氧胆酸 | Glycochenodeoxycholic Acid | C26H43NO5 | 对照品 | |
| 27 | 640-85-7 | | Pregnan-11-one, 3,17,20,21-tetrahydroxy-, (3α,5α,20S)- | C21H34O5 | | |
| 28 | 640-87-9 | 孕甾-4-烯-17α,21-二醇-3,20-二酮-21-醋酸酯 | reichstein'S substance S 21-acetate | C23H32O5 | 科研原料;甾体中间体;甾体化合物;杂质对照品;对照品-杂质对照品 | |
| 29 | 640-92-6 | 3β-Aminopregn-5-en-20-one | 3β-Aminopregn-5-en-20-one | C21H33NO | | |