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	英文名	物理化学性质	CAS号	分子式
6-methyl-2-(prop-2-en-1-ylsulfanyl)-3-propyl-3H,4H,5H-pyrrolo[3,2-d]pyrimidin-4-one	6-methyl-2-(prop-2-en-1-ylsulfanyl)-3-propyl-3H,4H,5H-pyrrolo[3,2-d]pyrimidin-4-one	分子量：263.36 密度：N/A 沸点：N/A 熔点：N/A	2326904-05-4	C₁₃H₁₇N₃OS
(2S)-2-amino-5-cyclopropylhexan-3-one	(2S)-2-amino-5-cyclopropylhexan-3-one	分子量：155.24 密度：N/A 沸点：N/A 熔点：N/A	2137426-71-0	C₉H₁₇NO
2-methyl-N-(2-methylphenyl)imidazo[1,2-b]pyridazine-6-carboxamide	2-methyl-N-(2-methylphenyl)imidazo[1,2-b]pyridazine-6-carboxamide	分子量：266.30 密度：N/A 沸点：N/A 熔点：N/A	2741943-81-5	C₁₅H₁₄N₄O
1,3-dimethyl-N-(quinolin-6-yl)-1H-pyrazole-5-carboxamide	1,3-dimethyl-N-(quinolin-6-yl)-1H-pyrazole-5-carboxamide	分子量：266.30 密度：N/A 沸点：N/A 熔点：N/A	2326688-31-5	C₁₅H₁₄N₄O
2-(but-3-en-1-ylsulfanyl)-6-methyl-3-propyl-3H,4H,5H-pyrrolo[3,2-d]pyrimidin-4-one	2-(but-3-en-1-ylsulfanyl)-6-methyl-3-propyl-3H,4H,5H-pyrrolo[3,2-d]pyrimidin-4-one	分子量：277.39 密度：N/A 沸点：N/A 熔点：N/A	2742037-05-2	C₁₄H₁₉N₃OS
N-(4-bromo-2-methylphenyl)-2-methylimidazo[1,2-b]pyridazine-6-carboxamide	N-(4-bromo-2-methylphenyl)-2-methylimidazo[1,2-b]pyridazine-6-carboxamide	分子量：345.19 密度：N/A 沸点：N/A 熔点：N/A	2742060-70-2	C₁₅H₁₃BrN₄O
[3-(4-fluorophenyl)-1H-pyrazol-4-yl]methanesulfonyl fluoride	[3-(4-fluorophenyl)-1H-pyrazol-4-yl]methanesulfonyl fluoride	分子量：258.25 密度：N/A 沸点：N/A 熔点：N/A	2229568-90-3	C₁₀H₈F₂N₂O₂S
1-Benzyl-4-{2-tert-butylimidazo[1,2-b]pyridazine-6-carbonyl}piperazine	1-Benzyl-4-{2-tert-butylimidazo[1,2-b]pyridazine-6-carbonyl}piperazine	分子量：377.5 密度：N/A 沸点：N/A 熔点：N/A	2742065-92-3	C₂₂H₂₇N₅O
1-[(4-Fluorophenyl)methyl]-4-propyl-1,2,3,4-tetrahydropyrazine-2,3-dione	1-[(4-Fluorophenyl)methyl]-4-propyl-1,2,3,4-tetrahydropyrazine-2,3-dione	分子量：262.28 密度：N/A 沸点：N/A 熔点：N/A	2741958-12-1	C₁₄H₁₅FN₂O₂
2-[4-(2-Fluorophenyl)-2,3-dioxo-1,2,3,4-tetrahydropyrazin-1-yl]acetonitrile	2-[4-(2-Fluorophenyl)-2,3-dioxo-1,2,3,4-tetrahydropyrazin-1-yl]acetonitrile	分子量：245.21 密度：N/A 沸点：N/A 熔点：N/A	2742007-65-2	C₁₂H₈FN₃O₂
Methyl 6-oxo-2-{[(oxolan-3-yl)methyl]sulfanyl}-1-[4-(trifluoromethyl)phenyl]-1,6-dihydropyrimidine-5-carboxylate	Methyl 6-oxo-2-{[(oxolan-3-yl)methyl]sulfanyl}-1-[4-(trifluoromethyl)phenyl]-1,6-dihydropyrimidine-5-carboxylate	分子量：414.4 密度：N/A 沸点：N/A 熔点：N/A	2742023-98-7	C₁₈H₁₇F₃N₂O₄S
N-(2-methoxyphenyl)-5-{[1,2,4]triazolo[4,3-b]pyridazin-6-yl}-octahydropyrrolo[3,4-c]pyrrole-2-carboxamide	N-(2-methoxyphenyl)-5-{[1,2,4]triazolo[4,3-b]pyridazin-6-yl}-octahydropyrrolo[3,4-c]pyrrole-2-carboxamide	分子量：379.4 密度：N/A 沸点：N/A 熔点：N/A	2742037-29-0	C₁₉H₂₁N₇O₂
N-cyclopropyl-1-[(naphthalen-1-yl)methyl]-1H-1,2,3-triazole-4-carboxamide	N-cyclopropyl-1-[(naphthalen-1-yl)methyl]-1H-1,2,3-triazole-4-carboxamide	分子量：292.33 密度：N/A 沸点：N/A 熔点：N/A	2742024-72-0	C₁₇H₁₆N₄O
6-{5-[(3,5-difluorophenyl)methanesulfonyl]-octahydropyrrolo[3,4-c]pyrrol-2-yl}-9-ethyl-9H-purine	6-{5-[(3,5-difluorophenyl)methanesulfonyl]-octahydropyrrolo[3,4-c]pyrrol-2-yl}-9-ethyl-9H-purine	分子量：448.5 密度：N/A 沸点：N/A 熔点：N/A	2741896-39-7	C₂₀H₂₂F₂N₆O₂S
2-Amino-3-(5-ethyl-1,3,4-thiadiazol-2-yl)propanoic acid	2-Amino-3-(5-ethyl-1,3,4-thiadiazol-2-yl)propanoic acid	分子量：201.25 密度：N/A 沸点：N/A 熔点：N/A	2145421-12-9	C₇H₁₁N₃O₂S
1-[(4-methoxyphenyl)methyl]-N-(5,6,7,8-tetrahydronaphthalen-1-yl)-1H-1,2,3-triazole-4-carboxamide	1-[(4-methoxyphenyl)methyl]-N-(5,6,7,8-tetrahydronaphthalen-1-yl)-1H-1,2,3-triazole-4-carboxamide	分子量：362.4 密度：N/A 沸点：N/A 熔点：N/A	2742042-77-7	C₂₁H₂₂N₄O₂
Tert-butyl 2-cyano-2-(6-phenylpyridazin-3-yl)acetate	Tert-butyl 2-cyano-2-(6-phenylpyridazin-3-yl)acetate	分子量：295.34 密度：N/A 沸点：N/A 熔点：N/A	2741927-23-9	C₁₇H₁₇N₃O₂
4-fluoro-3-methyl-N-(1,3,4-thiadiazol-2-yl)benzene-1-sulfonamide	4-fluoro-3-methyl-N-(1,3,4-thiadiazol-2-yl)benzene-1-sulfonamide	分子量：273.3 密度：N/A 沸点：N/A 熔点：N/A	2326542-49-6	C₉H₈FN₃O₂S₂
1-[(4-Chlorophenyl)methyl]-4-{[(5-phenyl-1,3,4-oxadiazol-2-yl)sulfanyl]methyl}pyrrolidin-2-one	1-[(4-Chlorophenyl)methyl]-4-{[(5-phenyl-1,3,4-oxadiazol-2-yl)sulfanyl]methyl}pyrrolidin-2-one	分子量：399.9 密度：N/A 沸点：N/A 熔点：N/A	2741919-32-2	C₂₀H₁₈ClN₃O₂S
N-benzyl-4-hydroxy-2-(4-phenyl-1H-1,2,3-triazol-1-yl)butanamide	N-benzyl-4-hydroxy-2-(4-phenyl-1H-1,2,3-triazol-1-yl)butanamide	分子量：336.4 密度：N/A 沸点：N/A 熔点：N/A	2741909-00-0	C₁₉H₂₀N₄O₂
2-[(3-fluorophenyl)amino]-5H-[1,3,4]thiadiazolo[2,3-b]quinazolin-5-one	2-[(3-fluorophenyl)amino]-5H-[1,3,4]thiadiazolo[2,3-b]quinazolin-5-one	分子量：312.3 密度：N/A 沸点：N/A 熔点：N/A	2742036-14-0	C₁₅H₉FN₄OS
N-(4-methoxy-2,4-dimethylpentyl)thiophen-3-amine	N-(4-methoxy-2,4-dimethylpentyl)thiophen-3-amine	分子量：227.37 密度：N/A 沸点：N/A 熔点：N/A	2137984-83-7	C₁₂H₂₁NOS
O-[2-(1-methyl-1H-1,2,3-triazol-5-yl)propan-2-yl]hydroxylamine	O-[2-(1-methyl-1H-1,2,3-triazol-5-yl)propan-2-yl]hydroxylamine	分子量：156.19 密度：N/A 沸点：N/A 熔点：N/A	2228484-29-3	C₆H₁₂N₄O
5-[1-(Methylamino)cyclopropyl]thiophene-3-carbonitrile	5-[1-(Methylamino)cyclopropyl]thiophene-3-carbonitrile	分子量：178.26 密度：N/A 沸点：N/A 熔点：N/A	2228542-51-4	C₉H₁₀N₂S
4-bromo-N-(1,5-dimethyl-3-oxo-2-phenylpyrazol-4-yl)-3-ethoxybenzenesulfonamide	4-bromo-N-(1,5-dimethyl-3-oxo-2-phenylpyrazol-4-yl)-3-ethoxybenzenesulfonamide	分子量：466.4 密度：N/A 沸点：N/A 熔点：N/A	2741900-13-8	C₁₉H₂₀BrN₃O₄S
6-Cyclopropyl-2-(octylsulfanyl)-3,4-dihydropyrimidin-4-one	6-Cyclopropyl-2-(octylsulfanyl)-3,4-dihydropyrimidin-4-one	分子量：280.4 密度：N/A 沸点：N/A 熔点：N/A	2742025-64-3	C₁₅H₂₄N₂OS
1-(4-Tert-butylbenzoyl)-4-(2,6-dimethylphenyl)piperazine	1-(4-Tert-butylbenzoyl)-4-(2,6-dimethylphenyl)piperazine	分子量：350.5 密度：N/A 沸点：N/A 熔点：N/A	2741934-19-8	C₂₃H₃₀N₂O
Methyl 6-oxo-2-(propylsulfanyl)-1-[4-(trifluoromethyl)phenyl]-1,6-dihydropyrimidine-5-carboxylate	Methyl 6-oxo-2-(propylsulfanyl)-1-[4-(trifluoromethyl)phenyl]-1,6-dihydropyrimidine-5-carboxylate	分子量：372.4 密度：N/A 沸点：N/A 熔点：N/A	2742040-57-7	C₁₆H₁₅F₃N₂O₃S
Methyl 2-(but-2-yn-1-ylsulfanyl)-6-oxo-1-[4-(trifluoromethyl)phenyl]-1,6-dihydropyrimidine-5-carboxylate	Methyl 2-(but-2-yn-1-ylsulfanyl)-6-oxo-1-[4-(trifluoromethyl)phenyl]-1,6-dihydropyrimidine-5-carboxylate	分子量：382.4 密度：N/A 沸点：N/A 熔点：N/A	2742042-37-9	C₁₇H₁₃F₃N₂O₃S
Methyl 2-[(3-methylbutyl)sulfanyl]-6-oxo-1-[4-(trifluoromethyl)phenyl]-1,6-dihydropyrimidine-5-carboxylate	Methyl 2-[(3-methylbutyl)sulfanyl]-6-oxo-1-[4-(trifluoromethyl)phenyl]-1,6-dihydropyrimidine-5-carboxylate	分子量：400.4 密度：N/A 沸点：N/A 熔点：N/A	2741938-03-2	C₁₈H₁₉F₃N₂O₃S
N-[4-(3,4-dichloro-2-methoxybenzenesulfonamido)phenyl]acetamide	N-[4-(3,4-dichloro-2-methoxybenzenesulfonamido)phenyl]acetamide	分子量：389.3 密度：N/A 沸点：N/A 熔点：N/A	2742006-21-7	C₁₅H₁₄Cl₂N₂O₄S
1-(cyclohexylmethyl)-3-[(4-methoxyphenyl)methyl]-1H,2H,3H,4H-thieno[3,2-d]pyrimidine-2,4-dione	1-(cyclohexylmethyl)-3-[(4-methoxyphenyl)methyl]-1H,2H,3H,4H-thieno[3,2-d]pyrimidine-2,4-dione	分子量：384.5 密度：N/A 沸点：N/A 熔点：N/A	2741933-19-5	C₂₁H₂₄N₂O₃S
N-{4-[(trifluoromethyl)sulfanyl]phenyl}-1,3-benzoxazol-2-amine	N-{4-[(trifluoromethyl)sulfanyl]phenyl}-1,3-benzoxazol-2-amine	分子量：310.30 密度：N/A 沸点：N/A 熔点：N/A	2327771-89-9	C₁₄H₉F₃N₂OS
3,5-diethyl 2,6-dimethyl-4-[1-(3-nitrophenyl)-1H-1,2,3-triazol-4-yl]-1,4-dihydropyridine-3,5-dicarboxylate	3,5-diethyl 2,6-dimethyl-4-[1-(3-nitrophenyl)-1H-1,2,3-triazol-4-yl]-1,4-dihydropyridine-3,5-dicarboxylate	分子量：441.4 密度：N/A 沸点：N/A 熔点：N/A	2742011-12-5	C₂₁H₂₃N₅O₆
N-(2,4-dichlorophenyl)-3-(4-fluorophenyl)-1-methyl-1H-pyrazole-5-carboxamide	N-(2,4-dichlorophenyl)-3-(4-fluorophenyl)-1-methyl-1H-pyrazole-5-carboxamide	分子量：364.2 密度：N/A 沸点：N/A 熔点：N/A	2326539-37-9	C₁₇H₁₂Cl₂FN₃O
3-cyclopropyl-8-fluoro-5-methyl-2-sulfanylidene-1H,2H,3H,4H,5H-pyrimido[5,4-b]indol-4-one	3-cyclopropyl-8-fluoro-5-methyl-2-sulfanylidene-1H,2H,3H,4H,5H-pyrimido[5,4-b]indol-4-one	分子量：289.33 密度：N/A 沸点：N/A 熔点：N/A	2741958-79-0	C₁₄H₁₂FN₃OS
5-[(2-chloro-4-fluorophenyl)methyl]-2-(4-fluorophenyl)-4H,5H-pyrazolo[1,5-a]pyrazin-4-one	5-[(2-chloro-4-fluorophenyl)methyl]-2-(4-fluorophenyl)-4H,5H-pyrazolo[1,5-a]pyrazin-4-one	分子量：371.8 密度：N/A 沸点：N/A 熔点：N/A	2324672-07-1	C₁₉H₁₂ClF₂N₃O
2-ethyl-1-{[1-(oxolane-3-carbonyl)azetidin-3-yl]methyl}-1H-imidazole	2-ethyl-1-{[1-(oxolane-3-carbonyl)azetidin-3-yl]methyl}-1H-imidazole	分子量：263.34 密度：N/A 沸点：N/A 熔点：N/A	2742016-13-1	C₁₄H₂₁N₃O₂
6-[5-(5-Fluoropyridin-2-yl)-octahydropyrrolo[3,4-b]pyrrole-1-carbonyl]-2-methyl-2,3-dihydropyridazin-3-one	6-[5-(5-Fluoropyridin-2-yl)-octahydropyrrolo[3,4-b]pyrrole-1-carbonyl]-2-methyl-2,3-dihydropyridazin-3-one	分子量：343.36 密度：N/A 沸点：N/A 熔点：N/A	2741921-85-5	C₁₇H₁₈FN₅O₂
2-[1-(1-methyl-1H-imidazole-5-carbonyl)-octahydropyrrolo[3,4-b]pyrrol-5-yl]-4-(trifluoromethyl)pyridine	2-[1-(1-methyl-1H-imidazole-5-carbonyl)-octahydropyrrolo[3,4-b]pyrrol-5-yl]-4-(trifluoromethyl)pyridine	分子量：365.35 密度：N/A 沸点：N/A 熔点：N/A	2741949-05-1	C₁₇H₁₈F₃N₅O
N-{2-[(2-methylprop-2-en-1-yl)sulfanyl]-4-oxo-3,4-dihydroquinazolin-3-yl}-5-oxo-1-phenylpyrrolidine-3-carboxamide	N-{2-[(2-methylprop-2-en-1-yl)sulfanyl]-4-oxo-3,4-dihydroquinazolin-3-yl}-5-oxo-1-phenylpyrrolidine-3-carboxamide	分子量：434.5 密度：N/A 沸点：N/A 熔点：N/A	2741889-89-2	C₂₃H₂₂N₄O₃S
N-(5-methoxy-1,3-benzothiazol-2-yl)-3,5-bis(trifluoromethyl)benzamide	N-(5-methoxy-1,3-benzothiazol-2-yl)-3,5-bis(trifluoromethyl)benzamide	分子量：420.3 密度：N/A 沸点：N/A 熔点：N/A	2328247-04-5	C₁₇H₁₀F₆N₂O₂S
1-{3-[(2-ethyl-1H-imidazol-1-yl)methyl]azetidin-1-yl}-4,4,4-trifluorobutan-1-one	1-{3-[(2-ethyl-1H-imidazol-1-yl)methyl]azetidin-1-yl}-4,4,4-trifluorobutan-1-one	分子量：289.30 密度：N/A 沸点：N/A 熔点：N/A	2742040-13-5	C₁₃H₁₈F₃N₃O
3-[(2-ethyl-1H-imidazol-1-yl)methyl]-N-[(oxolan-2-yl)methyl]azetidine-1-carboxamide	3-[(2-ethyl-1H-imidazol-1-yl)methyl]-N-[(oxolan-2-yl)methyl]azetidine-1-carboxamide	分子量：292.38 密度：N/A 沸点：N/A 熔点：N/A	2741957-27-5	C₁₅H₂₄N₄O₂
2-[1-(2,5-Dimethylfuran-3-carbonyl)-octahydropyrrolo[2,3-c]pyrrol-5-yl]-5-fluoropyridine	2-[1-(2,5-Dimethylfuran-3-carbonyl)-octahydropyrrolo[2,3-c]pyrrol-5-yl]-5-fluoropyridine	分子量：329.4 密度：N/A 沸点：N/A 熔点：N/A	2742068-72-8	C₁₈H₂₀FN₃O₂
4-Methyl-6-[5-(1,2,3-thiadiazole-4-carbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]pyrimidine	4-Methyl-6-[5-(1,2,3-thiadiazole-4-carbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]pyrimidine	分子量：316.38 密度：N/A 沸点：N/A 熔点：N/A	2741907-20-8	C₁₄H₁₆N₆OS
N-[(2,4-dichlorophenyl)methyl]-3-[2-(4-fluorophenyl)-4-oxo-4H,5H-pyrazolo[1,5-a]pyrazin-5-yl]propanamide	N-[(2,4-dichlorophenyl)methyl]-3-[2-(4-fluorophenyl)-4-oxo-4H,5H-pyrazolo[1,5-a]pyrazin-5-yl]propanamide	分子量：459.3 密度：N/A 沸点：N/A 熔点：N/A	2741929-68-8	C₂₂H₁₇Cl₂FN₄O₂
1-{[1-(5-bromofuran-2-carbonyl)azetidin-3-yl]methyl}-2-ethyl-1H-imidazole	1-{[1-(5-bromofuran-2-carbonyl)azetidin-3-yl]methyl}-2-ethyl-1H-imidazole	分子量：338.20 密度：N/A 沸点：N/A 熔点：N/A	2742055-34-9	C₁₄H₁₆BrN₃O₂
4-{3-[(2-ethyl-1H-imidazol-1-yl)methyl]azetidine-1-carbonyl}-3-fluoropyridine	4-{3-[(2-ethyl-1H-imidazol-1-yl)methyl]azetidine-1-carbonyl}-3-fluoropyridine	分子量：288.32 密度：N/A 沸点：N/A 熔点：N/A	2742079-51-0	C₁₅H₁₇FN₄O
3-(2-{3-[(2-ethyl-1H-imidazol-1-yl)methyl]azetidin-1-yl}-2-oxoethyl)-6-methyl-3,4-dihydropyrimidin-4-one	3-(2-{3-[(2-ethyl-1H-imidazol-1-yl)methyl]azetidin-1-yl}-2-oxoethyl)-6-methyl-3,4-dihydropyrimidin-4-one	分子量：315.37 密度：N/A 沸点：N/A 熔点：N/A	2742048-27-5	C₁₆H₂₁N₅O₂