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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
Methyl 2-((5-(2,5-dichlorophenyl)furan-2-yl)methylene)-7-methyl-5-(4-(methylthio)phenyl)-3-oxo-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidine-6-carboxylate 611195-35-8
Ethyl 7-methyl-2-(4-(methylthio)benzylidene)-5-(4-(methylthio)phenyl)-3-oxo-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidine-6-carboxylate 292641-83-9
Benzyl 7-methyl-2-(4-(methylthio)benzylidene)-5-(4-(methylthio)phenyl)-3-oxo-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidine-6-carboxylate 609794-95-8
(E)-4-(3-(5-(furan-2-ylmethylene)-4-oxo-2-thioxothiazolidin-3-yl)propanamido)-2-hydroxybenzoic acid 612803-74-4
Furan-2-ylmethyl-(6,7,8-trimethoxy-quinazolin-4-yl)-amine 150450-09-2
(E)-N'-(4-(5-(3-methoxybenzylidene)-4-oxo-2-thioxothiazolidin-3-yl)butanoyl)-3-nitrobenzohydrazide 476667-96-6
3-(2-Chlorophenyl)-4-((3-(furan-2-yl)-2-methylallylidene)amino)-1H-1,2,4-triazole-5(4H)-thione 478254-43-2
5-(3-Chlorophenyl)-4-((1-naphthylmethylene)amino)-4H-1,2,4-triazole-3-thiol 478254-68-1
3-(3-Chlorophenyl)-4-((4-(methylthio)benzylidene)amino)-1H-1,2,4-triazole-5(4H)-thione 478254-87-4
3-(3-Chlorophenyl)-4-((3-(furan-2-yl)-2-methylallylidene)amino)-1H-1,2,4-triazole-5(4H)-thione 478255-32-2
5-(3-Methylphenyl)-4-((1-naphthylmethylene)amino)-4H-1,2,4-triazole-3-thiol 478255-59-3
Methyl 4-(((5-thioxo-3-(m-tolyl)-1H-1,2,4-triazol-4(5H)-yl)imino)methyl)benzoate 478255-70-8
4-((4-(Methylthio)benzylidene)amino)-3-(m-tolyl)-1H-1,2,4-triazole-5(4H)-thione 478255-83-3
4-((2-Chlorobenzylidene)amino)-5-(m-tolyl)-4H-1,2,4-triazole-3-thiol 613248-78-5
4-(((1-Methyl-1H-pyrrol-2-yl)methylene)amino)-3-(m-tolyl)-1H-1,2,4-triazole-5(4H)-thione 478256-16-5
4-((3-(Furan-2-yl)-2-methylallylidene)amino)-3-(m-tolyl)-1H-1,2,4-triazole-5(4H)-thione 478256-28-9
2-(((5-Thioxo-3-(m-tolyl)-1H-1,2,4-triazol-4(5H)-yl)imino)methyl)benzoic acid 150093-68-8
2-(2-(((3-(2-Methoxyphenyl)-5-thioxo-1H-1,2,4-triazol-4(5H)-yl)imino)methyl)phenoxy)acetic acid 478256-51-8
5-(2-Methoxyphenyl)-4-((naphthalen-1-ylmethylene)amino)-4H-1,2,4-triazole-3-thiol 478256-53-0
Methyl 4-(((3-(2-methoxyphenyl)-5-thioxo-1H-1,2,4-triazol-4(5H)-yl)imino)methyl)benzoate 478256-62-1
3-(2-Methoxyphenyl)-4-((4-(methylthio)benzylidene)amino)-1H-1,2,4-triazole-5(4H)-thione 478256-70-1
4-(((3-(2-Methoxyphenyl)-5-thioxo-1H-1,2,4-triazol-4(5H)-yl)imino)methyl)benzoic acid 478257-30-6
2-(((3-(2-Methoxyphenyl)-5-thioxo-1H-1,2,4-triazol-4(5H)-yl)imino)methyl)benzoic acid 478257-50-0
2-(2-(((3-(3-Methoxyphenyl)-5-thioxo-1H-1,2,4-triazol-4(5H)-yl)imino)methyl)phenoxy)acetic acid 478257-69-1
4-((2-Chlorobenzylidene)amino)-5-(3-methoxyphenyl)-4H-1,2,4-triazole-3-thiol 613248-97-8
(Z)-N-(3-((3-hydroxypropyl)amino)-3-oxo-1-(5-(4-sulfamoylphenyl)furan-2-yl)prop-1-en-2-yl)-4-methylbenzamide 615273-85-3
(E)-methyl 2-(4-(dimethylamino)benzylidene)-7-methyl-3-oxo-5-(thiophen-2-yl)-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidine-6-carboxylate 324071-35-4
(Z)-4-methoxy-N-(1-(4-(2-(2-methoxyphenoxy)ethoxy)phenyl)-3-(methylamino)-3-oxoprop-1-en-2-yl)benzamide 615274-35-6
(E)-4-(4-(5-(furan-2-ylmethylene)-4-oxo-2-thioxothiazolidin-3-yl)butanamido)benzoic acid 637318-98-0
(Z)-N-(1-(5-(3,4-dichlorophenyl)furan-2-yl)-3-((2-(dimethylamino)ethyl)amino)-3-oxoprop-1-en-2-yl)benzamide 468753-70-0
3-Allyl-2-(((5-(4-chlorophenyl)furan-2-yl)methylene)hydrazono)-5-(3-methylbenzyl)thiazolidin-4-one 290839-64-4
(2Z)-2-cyano-3-[5-(4-fluorophenyl)furan-2-yl]-N-(2,4,6-trimethylphenyl)prop-2-enamide 501109-43-9
N-undecyl-5,6,7,8-tetrahydro[1]benzothieno[2,3-d]pyrimidin-4-amine 683796-90-9
methyl 2-amino-4-(4-chlorophenyl)-7-methyl-5-oxo-6-(pyridin-2-ylmethyl)-5,6-dihydro-4H-pyrano[3,2-c]pyridine-3-carboxylate 767299-97-8
methyl 2-amino-4-(2,3-dimethoxyphenyl)-7-methyl-5-oxo-6-(pyridin-2-ylmethyl)-5,6-dihydro-4H-pyrano[3,2-c]pyridine-3-carboxylate 767300-00-5
methyl 2-amino-4-(4-fluorophenyl)-7-methyl-5-oxo-5,6-dihydro-4H-pyrano[3,2-c]pyridine-3-carboxylate 767300-05-0
5-(3,5-dimethoxyphenyl)-3-hydroxy-4-[(4-methoxyphenyl)carbonyl]-1-(3-methoxypropyl)-1,5-dihydro-2H-pyrrol-2-one 879182-41-9
(5Z)-3-ethyl-5-({3-[2-methyl-4-(prop-2-en-1-yloxy)phenyl]-1-phenyl-1H-pyrazol-4-yl}methylidene)-2-thioxo-1,3-thiazolidin-4-one 955866-24-7
(5Z)-3-butyl-5-({3-[2-methyl-4-(prop-2-en-1-yloxy)phenyl]-1-phenyl-1H-pyrazol-4-yl}methylidene)-2-thioxo-1,3-thiazolidin-4-one 955867-98-8
benzyl (2Z)-7-methyl-2-(1-methyl-2-oxo-1,2-dihydro-3H-indol-3-ylidene)-3-oxo-5-(thiophen-2-yl)-2,3-dihydro-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate 608119-98-8
Benzyl (2Z)-2-(1-ethyl-2-oxo-1,2-dihydro-3H-indol-3-ylidene)-7-methyl-3-oxo-5-(2-thienyl)-2,3-dihydro-5H-[1,3]thiazolo[3,2-A]pyrimidine-6-carboxylate 608120-01-0
(5Z)-5-({3-[2-methyl-4-(prop-2-en-1-yloxy)phenyl]-1-phenyl-1H-pyrazol-4-yl}methylidene)-3-octyl-2-thioxo-1,3-thiazolidin-4-one 955895-46-2
(5Z)-3-hexyl-5-({3-[2-methyl-4-(prop-2-en-1-yloxy)phenyl]-1-phenyl-1H-pyrazol-4-yl}methylidene)-2-thioxo-1,3-thiazolidin-4-one 955876-88-7
(5Z)-5-({3-[2-methyl-4-(prop-2-en-1-yloxy)phenyl]-1-phenyl-1H-pyrazol-4-yl}methylidene)-3-pentyl-2-thioxo-1,3-thiazolidin-4-one 955899-14-6
(5Z)-5-{[3-(4-butoxy-2-methylphenyl)-1-phenyl-1H-pyrazol-4-yl]methylidene}-3-butyl-2-thioxo-1,3-thiazolidin-4-one 955875-26-0
(5Z)-5-({3-[2-methyl-4-(prop-2-en-1-yloxy)phenyl]-1-phenyl-1H-pyrazol-4-yl}methylidene)-3-propyl-2-thioxo-1,3-thiazolidin-4-one 955870-73-2
5-chloro-N-(3-chlorobenzyl)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-(methylsulfanyl)pyrimidine-4-carboxamide 880786-93-6
(5Z)-5-{[3-(4-methoxy-2-methylphenyl)-1-phenyl-1H-pyrazol-4-yl]methylidene}-3-octyl-2-thioxo-1,3-thiazolidin-4-one 955899-02-2
(5Z)-3-(butan-2-yl)-5-({3-[3-methyl-4-(prop-2-en-1-yloxy)phenyl]-1-phenyl-1H-pyrazol-4-yl}methylidene)-2-thioxo-1,3-thiazolidin-4-one 955893-51-3
(E)-4-[[1,3-dioxo-2-(oxolan-2-ylmethyl)isoindol-5-yl]amino]-4-oxobut-2-enoic acid 899269-35-3

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