| CAS编号 | 中文名 | 英文名 | 分子式 | 分子量 | 熔点 | 沸点 |
| 2131-55-7 | 4-氯苯基异硫氰酸酯 | isothiocyanic acid, p-chlorophenyl ester | | | 43-136℃ | 135℃(24 |
| 2131-57-9 | | 4-acetylphenyl isothiocyanate | C9H7NOS | 177.22 | | |
| 2131-59-1 | 3-溴异硫氰酸苯酯 | isothiocyanic acid, m-bromophenyl ester | C7H4BrNS | 214.07 | | 256℃ |
| 2131-60-4 | | 4-isothiocyanato-pheno | | | | |
| 2131-61-5 | 4-硝苯基异硫氰酸酯 | 1-isothiocyanato-4-nitro-benzen | C7H4N2O2S | 180.18 | 109-113℃ | 137℃(11 |
| 2131-62-6 | 4-异硫氰酸基苯甲酸 | 4-carboxyphenyl isothiocyanate | | | | |
| 2131-63-7 | | 3-carboxyphenyl isothiocyanate | C8H5NO2S | 179.19 | | |
| 2131-64-8 | | isothiocyanic acid, p-dimethylaminophenyl ester | C9H10N2S | 178.25 | | |
| 2131-75-1 | | n,n'-(4-methyl-m-phenylene)bis-1-aziridinecarboxamid | | | | |
| 2131-76-2 | | n-methylstrychninium iodide | | | | |
| 2131006-93-2 | (4-甲基-5-硝基吡啶-3-基)硼酸 | (4-methyl-5-nitropyridin-3-yl)boronic acid | | | | |
| 2131007-03-7 | 4-氨基-5-乙炔基-2-氟苄腈 | 4-amino-5-ethynyl-2-fluorobenzonitrile | | | | |
| 2131007-04-8 | 3-溴-6-氟-1h-吲哚-5-甲腈 | 3-bromo-6-fluoro-1h-indole-5-carbonitrile | | | | |
| 2131071-68-4 | | n-boc-4-nitrobenzyl-glycine | | | | |
| 213113-45-2 | | 6-nitropyridin-2-ol | | | | |
| 21312-10-7 | | 4'-((5-methyl-3-isoxazolyl)sulfamoyl)-acetanilid | C12H13N3O4S | 295.31 | | |
| 21312-16-3 | | n-(4-(1-pyrrolidinyl)butyl)-2-biphenylamin oxalate | | | | |
| 21312-41-4 | | (4-amino-phenyl)-(4-ethyl-piperazin-1-yl)-methanone | | | | |
| 21312-45-8 | | piperazine, 1-(p-aminobenzoyl)-4-propyl-, hydrochloride, hydrate (1:1:2) | | | | |
| 21312-48-1 | | piperazine, 1-(p-aminobenzoyl)-4-butyl-, dihydrochloride, hydrate | | | | |
| 21312-77-6 | | Bis(N-cyclohexylthiopicolinamidato)-copper(II) | C24H30CuN4S2 | 502.20 | | |
| 213124-94-8 | (5-甲酰基呋喃-2-基)膦酸二乙酯 | diethyl (5-formylfuran-2-yl)phosphonate | | | | |
| 21313-49-5 | | phthaloyl-glycine 4-nitorophenyl ester | | | | |
| 21313-86-0 | | 8-(4-nitrophenyl)-1h-purin-6-amin | | | | |
| 21313-95-1 | | 6-chloro-9-(p-methoxyphenyl)-purin | | | | |
| 213130-43-9 | 3-氯-4-氰基苯-1-磺酰氯 | 3-chloro-4-cyanobenzene-1-sulfonyl chloride | | | | |
| 213131-32-9 | (2S,3S)-3-羟基吡咯烷-2-羧酸甲酯盐酸盐 | methyl (2S,3S)-3-hydroxypyrrolidine-2-carboxylate hydrochloride | | | | |
| 213133-77-8 | 2-(3,4-二氯苄基)苯并咪唑 | 2-(3,4-dichlorobenzyl)-1h-benzimidazole | | | | |
| 213133-88-1 | | 2-(2-chlorobenzyl)-1h-benzimidazole | | | | |
| 21314-04-5 | | 9-(4-methoxyphenyl)-1,9-dihydro-6h-purin-6-one | | | | |
| 21314-05-6 | | 9-(4-nitrophenyl)-9h-purin-6-amin | | | | |
| 21314-17-0 | 4-羟基-1-苯基吡唑并[3,4-d]嘧啶 | 4-hydroxy-1-phenyl-1h-pyrazolo[3,4-d]pyrimidine | | | | |
| 21314-33-0 | | 2-(4-methyl-1-piperazinyl)-benzo(g)quinazolin-4(3h)-on | | | | |
| 21314-34-1 | | 2-(4-phenyl-1-piperazinyl)-benzo(g)quinazolin-4(3h)-on | | | | |
| 21314-77-2 | | (3-pyridyl)-thiophen-2-ylmethanol | | | | |
| 21314-80-7 | | 4-(2-thenoyl)pyridine | | | | |
| 21315-20-8 | 2-异丁氧基苯酚 | 2-isobutoxyphenol | | | | |
| 21315-46-8 | 4-正丁氨基-苯并吡喃-2-酮 | 4-butylamino-chromen-2-one | | | | |
| 21317-32-8 | | selenium (i) chloride | Cl2Se2 | 228.82 | | |
| 213178-93-9 | | boc-d-norvaline n-hydroxysuccinimide ester | | | | |
| 213178-94-0 | 3-环己基-d-丙氨酸 水合物 | | | | | |
| 213178-97-3 | n-乙酰基-dl-组氨酸 一水合物 | n-acetyl-dl-histidine monohydrate | | | | |
| 2131782-57-3 | (6-溴-2-甲氧基喹啉-3-基)硼酸 | (6-bromo-2-methoxyquinolin-3-yl)boronic acid | | | | |
| 2131803-90-0 | | wyc-209 | | | | |
| 2131816-17-4 | n-[(1S)-(1-二茂铁基)-2-(二苯基膦基)乙基]]-3,5-双(三氟甲基)-苯甲酰胺 | n-[(1S)-(1-ferrocenyl)-2-(diphenylphosphino)ethyl)]-3,5-bis(trifluoromethyl)-benzamide | | | | |
| 213186-59-5 | | 4-oxo-4-(4-pyridin-2-ylpiperazin-1-yl)butanoic acid | | | | |
| 21319-43-7 | | lead(ii)-2,2,6,6-tetramethyl-3,5-heptanedionate | C22H38O4Pb | 573.74 | 126-128℃ | |
| 21319-53-9 | | 1-benzyl-2-piperidinecarboxylic acid | | | | |
| 213192-26-8 | | 2-amino-6-tert-butyl-4,5,6,7-tetrahydrobenzo[b]-thiophene-3-carboxylic acid methyl ester | | | | |
| 213192-28-0 | | ethyl 2-amino-4,5,6,7,8,9,10,11,12,13-decahydrocyclododeca[b]thiophene-3-carboxylate | | | | |
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