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CAS号查询库

CAS号是公开的化学物质信息的最权威的集合。CAS号涵盖从1957年至今的科学文献中确定的物质，其他物质可追溯到20世纪初。它也称CAS编号(CAS Registry Number，或称CAS Number，CAS Rn，CAS #)，又称CAS登录号或CAS登记号码，是某种物质(化合物、高分子材料、生物序列(Biological sequences)、混合物或合金)的唯一的数字识别号码。美国化学会的下设组织化学文摘社(Chemical Abstracts Service，简称CAS)负责为每一种出现在文献中的物质分配一个CAS编号，其目的是为了避免化学物质有多种名称的麻烦，使数据库的检索更为方便。如今几乎所有的化学数据库都允许用CAS编号检索。

名称 CAS号
2-{[4-(4-bromophenyl)-5-phenyl-4H-1,2,4-triazol-3-yl]sulfanyl}-N'-[(1E)-1-(2-hydroxyphenyl)ethylidene]acetohydrazide 497083-30-4
2-{[4-(4-bromophenyl)-5-phenyl-4H-1,2,4-triazol-3-yl]sulfanyl}-N'-[(1E)-1-(4-hydroxyphenyl)ethylidene]acetohydrazide 497083-38-2
2-{[5-(4-chlorophenyl)-4-ethyl-4H-1,2,4-triazol-3-yl]sulfanyl}-N'-[(1E)-1-(4-hydroxy-3-methoxyphenyl)ethylidene]acetohydrazide 488121-02-4
N'-[(E)-(4-hydroxy-3,5-dimethoxyphenyl)methylidene]-2-{[3-(2-methylphenyl)-4-oxo-3,4-dihydroquinazolin-2-yl]sulfanyl}acetohydrazide 488857-75-6
N'-[(Z)-(3-bromo-4-hydroxy-5-methoxyphenyl)methylidene]-2-({5-[(4-methylbenzyl)sulfanyl]-1,3,4-thiadiazol-2-yl}sulfanyl)acetohydrazide 489404-76-4
N'-[(Z)-(3,4-dihydroxyphenyl)methylidene]-2-{[4-ethyl-5-(4-methylphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}acetohydrazide 497824-39-2
2-{[4-ethyl-5-(4-methylphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}-N'-[(Z)-1H-indol-3-ylmethylidene]acetohydrazide 489396-49-8
N'-[(Z)-(3-ethoxy-4-hydroxyphenyl)methylidene]-2-{[4-ethyl-5-(4-methylphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}acetohydrazide 489405-39-2
2-{[4-ethyl-5-(4-methylphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}-N'-[(Z)-(2-hydroxynaphthalen-1-yl)methylidene]acetohydrazide 489465-03-4
2-{[4-ethyl-5-(4-methylphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}-N'-[(Z)-(4-hydroxyphenyl)methylidene]acetohydrazide 489403-76-1
2-{[4-ethyl-5-(4-methylphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}-N'-[(Z)-(4-hydroxy-3-methoxyphenyl)methylidene]acetohydrazide 487033-80-7
2-{[4-ethyl-5-(4-methylphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}-N'-[(Z)-(2-hydroxyphenyl)methylidene]acetohydrazide 488725-66-2
N'-{(Z)-[4-(diethylamino)-2-hydroxyphenyl]methylidene}-2-{[4-ethyl-5-(4-methylphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}acetohydrazide 497244-70-9
N'-[(Z)-(5-bromo-2-hydroxyphenyl)methylidene]-2-{[4-ethyl-5-(4-methylphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}acetohydrazide 489422-00-6
2-{[4-ethyl-5-(4-methylphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}-N'-[(Z)-(2-hydroxy-3-methoxyphenyl)methylidene]acetohydrazide 489401-35-6
2-({5-[(2-chlorobenzyl)sulfanyl]-1,3,4-thiadiazol-2-yl}sulfanyl)-N'-{(Z)-[2-hydroxy-3-(prop-2-en-1-yl)phenyl]methylidene}acetohydrazide 488802-43-3
2-({5-[(2-chlorobenzyl)sulfanyl]-1,3,4-thiadiazol-2-yl}sulfanyl)-N'-[(Z)-(2-hydroxynaphthalen-1-yl)methylidene]acetohydrazide 497920-79-3
2-{[5-(4-tert-butylphenyl)-4-(4-methylphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}-N'-[(Z)-(3,4-dihydroxyphenyl)methylidene]acetohydrazide 497921-17-2
2,4,6-Triethyl-1,3,5-oxadithiane 53897-57-7
N'-(5-bromo-2-hydroxybenzylidene)-2-(2,4-dichlorophenoxy)acetohydrazide 303086-12-6
1-Hydroxy-cubane-4-carboxylic acid 2169623-74-7
N-[(Z)-[(4,6-Dimethylpyrimidin-2-YL)amino][(4-ethylphenyl)amino]methylidene]benzamide 351226-08-9
(Z)-3-(1H-benzo[d]imidazol-1-yl)-N'-(5-bromo-2-hydroxybenzylidene)propanehydrazide 612047-14-0
3-(1H-benzimidazol-1-yl)-N'-[(Z)-(2-hydroxynaphthalen-1-yl)methylidene]propanehydrazide 1449030-72-1
(E)-3-(1H-benzo[d]imidazol-1-yl)-N'-(3-ethoxy-4-hydroxybenzylidene)propanehydrazide 518018-71-8
5-(4-((4-Chlorobenzyl)oxy)phenyl)-N'-(2-hydroxybenzylidene)-1H-pyrazole-3-carbohydrazide 634896-14-3
N'-(1-(4-Hydroxyphenyl)ethylidene)-3-isopropyl-1H-pyrazole-5-carbohydrazide 303106-38-9
N'-(1-(2-Hydroxyphenyl)ethylidene)-3-isopropyl-1H-pyrazole-5-carbohydrazide 303106-57-2
(E)-3-(4-(benzyloxy)-3-methoxyphenyl)-N'-((2-methyl-1H-indol-3-yl)methylene)-1H-pyrazole-5-carbohydrazide 1285503-85-6
N-(4-butylphenyl)-3-hydroxy-4-[(E)-(4-nitrophenyl)diazenyl]naphthalene-2-carboxamide 878988-29-5
2-{[5-(4-tert-butylphenyl)-4-(4-methylphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}-N'-[(Z)-1H-indol-3-ylmethylidene]acetohydrazide 488853-77-6
2-{[5-(4-tert-butylphenyl)-4-(4-methylphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}-N'-{(Z)-[2-hydroxy-3-(prop-2-en-1-yl)phenyl]methylidene}acetohydrazide 379723-19-0
2-{[5-(4-tert-butylphenyl)-4-(4-methylphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}-N'-[(Z)-(3-ethoxy-4-hydroxyphenyl)methylidene]acetohydrazide 497921-39-8
2-{[5-(4-tert-butylphenyl)-4-(4-methylphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}-N'-[(Z)-(2-hydroxynaphthalen-1-yl)methylidene]acetohydrazide 488135-05-3
2-{[5-(4-tert-butylphenyl)-4-(4-methylphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}-N'-[(Z)-(4-hydroxyphenyl)methylidene]acetohydrazide 488796-64-1
2-{[5-(4-tert-butylphenyl)-4-(4-methylphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}-N'-[(Z)-(2-hydroxyphenyl)methylidene]acetohydrazide 497248-75-6
2-{[5-(4-tert-butylphenyl)-4-(4-methylphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}-N'-[(Z)-(2-hydroxy-3-methoxyphenyl)methylidene]acetohydrazide 488121-52-4
2-{[5-(4-tert-butylphenyl)-4-(4-methylphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}-N'-[(Z)-(3-ethoxy-2-hydroxyphenyl)methylidene]acetohydrazide 497248-41-6
2-{[5-(4-tert-butylphenyl)-4-(4-methoxyphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}-N'-[(1E)-1-(4-hydroxyphenyl)ethylidene]acetohydrazide 489397-18-4
2-{[4-(4-chlorophenyl)-5-(4-methylphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}-N'-[(1E)-1-(4-hydroxyphenyl)ethylidene]acetohydrazide 497950-42-2
2-{[5-(4-chlorophenyl)-4-(4-ethoxyphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}-N'-[(1E)-1-(4-hydroxyphenyl)ethylidene]acetohydrazide 499182-66-0
2-{[5-(4-chlorophenyl)-4-(4-ethoxyphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}-N'-[(1E)-1-(4-hydroxyphenyl)propylidene]acetohydrazide 497950-83-1
2-{[4-(4-ethoxyphenyl)-5-phenyl-4H-1,2,4-triazol-3-yl]sulfanyl}-N'-[(1E)-1-(4-hydroxyphenyl)propylidene]acetohydrazide 488824-31-3
N'-[(Z)-(3,4-dihydroxyphenyl)methylidene]-2-{[5-(4-methoxyphenyl)-4-(4-methylphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}acetohydrazide 489415-78-3
N'-[(1E)-1-(4-hydroxyphenyl)ethylidene]-2-{[5-(4-methoxyphenyl)-4-(4-methylphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}acetohydrazide 497951-49-2
N'-[(1E)-1-(4-hydroxyphenyl)propylidene]-2-{[5-(4-methoxyphenyl)-4-(4-methylphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}acetohydrazide 488862-22-2
2-{[4-(4-chlorophenyl)-5-(4-methoxyphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}-N'-[(1E)-1-(4-hydroxyphenyl)ethylidene]acetohydrazide 406467-03-6
2-{[4-(4-chlorophenyl)-5-(4-methoxyphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}-N'-[(1E)-1-(4-hydroxyphenyl)propylidene]acetohydrazide 406467-01-4
N'-[(Z)-(4-hydroxy-3,5-dimethoxyphenyl)methylidene]-2-{[4-(4-methoxyphenyl)-5-(4-methylphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}acetohydrazide 406466-13-5
N'-[(1E)-1-(2-hydroxyphenyl)ethylidene]-2-{[4-(4-methoxyphenyl)-5-(4-methylphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}acetohydrazide 406465-88-1

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