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
Pentanoic acid, 5-[[2-methoxy-4-(2-phenyldiazenyl)phenyl]amino]-5-oxo-	Pentanoic acid, 5-[[2-methoxy-4-(2-phenyldiazenyl)phenyl]amino]-5-oxo-	分子量：341.4 密度：N/A 沸点：N/A 熔点：N/A	882344-99-2	C₁₈H₁₉N₃O₄
Cyclopentaneacetic acid, 1-[2-[[2-methoxy-4-(2-phenyldiazenyl)phenyl]amino]-2-oxoethyl]-	Cyclopentaneacetic acid, 1-[2-[[2-methoxy-4-(2-phenyldiazenyl)phenyl]amino]-2-oxoethyl]-	分子量：395.5 密度：N/A 沸点：N/A 熔点：N/A	883265-01-8	C₂₂H₂₅N₃O₄
Acetamide, 2-chloro-N-[2-methoxy-4-(2-phenyldiazenyl)phenyl]-	Acetamide, 2-chloro-N-[2-methoxy-4-(2-phenyldiazenyl)phenyl]-	分子量：303.74 密度：N/A 沸点：N/A 熔点：N/A	882345-07-5	C₁₅H₁₄ClN₃O₂
3-Cyclohexene-1-carboxylic acid, 6-[[[2-methoxy-4-(2-phenyldiazenyl)phenyl]amino]carbonyl]-	3-Cyclohexene-1-carboxylic acid, 6-[[[2-methoxy-4-(2-phenyldiazenyl)phenyl]amino]carbonyl]-	分子量：379.4 密度：N/A 沸点：N/A 熔点：N/A	882345-23-5	C₂₁H₂₁N₃O₄
Benzoic acid, 2-[[[2-methoxy-4-(2-phenyldiazenyl)phenyl]amino]carbonyl]-	Benzoic acid, 2-[[[2-methoxy-4-(2-phenyldiazenyl)phenyl]amino]carbonyl]-	分子量：375.4 密度：N/A 沸点：N/A 熔点：N/A	882345-31-5	C₂₁H₁₇N₃O₄
Acetamide, 2,2,2-trifluoro-N-[2-methoxy-4-(2-phenyldiazenyl)phenyl]-	Acetamide, 2,2,2-trifluoro-N-[2-methoxy-4-(2-phenyldiazenyl)phenyl]-	分子量：323.27 密度：N/A 沸点：N/A 熔点：N/A	882345-39-3	C₁₅H₁₂F₃N₃O₂
Benzamide, 2-chloro-N-[2-methoxy-4-(2-phenyldiazenyl)phenyl]-	Benzamide, 2-chloro-N-[2-methoxy-4-(2-phenyldiazenyl)phenyl]-	分子量：365.8 密度：N/A 沸点：N/A 熔点：N/A	882345-63-3	C₂₀H₁₆ClN₃O₂
(3beta)-cholest-5-en-3-yl [(4-methyl-6-oxo-7,8,9,10-tetrahydro-6H-benzo[c]chromen-3-yl)oxy]acetate	(3beta)-cholest-5-en-3-yl [(4-methyl-6-oxo-7,8,9,10-tetrahydro-6H-benzo[c]chromen-3-yl)oxy]acetate	分子量：656.9 密度：N/A 沸点：N/A 熔点：N/A	1029130-54-8	C₄₃H₆₀O₅
CID 16396735	CID 16396735	分子量：610.8 密度：N/A 沸点：N/A 熔点：N/A	1046813-98-2	C₃₈H₄₆N₂O₅
(3beta)-cholest-5-en-3-yl [(6-oxo-6H-benzo[c]chromen-3-yl)oxy]acetate	(3beta)-cholest-5-en-3-yl [(6-oxo-6H-benzo[c]chromen-3-yl)oxy]acetate	分子量：638.9 密度：N/A 沸点：N/A 熔点：N/A	1029130-85-5	C₄₂H₅₄O₅
7-[[(1R,8aS)-2,5,5,8a-tetramethyl-6-oxo-4,4a,7,8-tetrahydro-1H-naphthalen-1-yl]methoxy]chromen-2-one	7-[[(1R,8aS)-2,5,5,8a-tetramethyl-6-oxo-4,4a,7,8-tetrahydro-1H-naphthalen-1-yl]methoxy]chromen-2-one	分子量：380.5 密度：N/A 沸点：N/A 熔点：N/A	41743-47-9	C₂₄H₂₈O₄
(3beta)-cholest-5-en-3-yl [(4-methyl-2-oxo-2H-chromen-7-yl)oxy]acetate	(3beta)-cholest-5-en-3-yl [(4-methyl-2-oxo-2H-chromen-7-yl)oxy]acetate	分子量：602.8 密度：N/A 沸点：N/A 熔点：N/A	1039715-05-3	C₃₉H₅₄O₅
(3beta)-Cholest-5-en-3-yl [(4-oxo-1,2,3,4-tetrahydrocyclopenta[c]chromen-7-yl)oxy]acetate	(3beta)-Cholest-5-en-3-yl [(4-oxo-1,2,3,4-tetrahydrocyclopenta[c]chromen-7-yl)oxy]acetate	分子量：628.9 密度：N/A 沸点：N/A 熔点：N/A	1042419-43-1	C₄₁H₅₆O₅
(3beta)-cholest-5-en-3-yl [(2-oxo-4-phenyl-2H-chromen-7-yl)oxy]acetate	(3beta)-cholest-5-en-3-yl [(2-oxo-4-phenyl-2H-chromen-7-yl)oxy]acetate	分子量：664.9 密度：N/A 沸点：N/A 熔点：N/A	1029131-49-4	C₄₄H₅₆O₅
(3beta)-cholest-5-en-3-yl [(4-methyl-6-oxo-6H-benzo[c]chromen-3-yl)oxy]acetate	(3beta)-cholest-5-en-3-yl [(4-methyl-6-oxo-6H-benzo[c]chromen-3-yl)oxy]acetate	分子量：652.9 密度：N/A 沸点：N/A 熔点：N/A	1038748-67-2	C₄₃H₅₆O₅
(3beta)-cholest-5-en-3-yl [(2-oxo-2H-chromen-7-yl)oxy]acetate	(3beta)-cholest-5-en-3-yl [(2-oxo-2H-chromen-7-yl)oxy]acetate	分子量：588.8 密度：N/A 沸点：N/A 熔点：N/A	1029131-61-0	C₃₈H₅₂O₅
2,3-Dihydrofuro[3,4-b][1,4]dioxine	2,3-Dihydrofuro[3,4-b][1,4]dioxine	分子量：126.11 密度：N/A 沸点：N/A 熔点：N/A	131649-82-6	C₆H₆O₃
Cyclopentaneacetic acid, 1-[2-oxo-2-[[4-(2-phenyldiazenyl)phenyl]amino]ethyl]-	Cyclopentaneacetic acid, 1-[2-oxo-2-[[4-(2-phenyldiazenyl)phenyl]amino]ethyl]-	分子量：365.4 密度：N/A 沸点：N/A 熔点：N/A	882323-75-3	C₂₁H₂₃N₃O₃
Carbamic acid, N-[4-[(1E)-2-phenyldiazenyl]phenyl]-, 2-methylpropyl ester	Carbamic acid, N-[4-[(1E)-2-phenyldiazenyl]phenyl]-, 2-methylpropyl ester	分子量：297.35 密度：N/A 沸点：N/A 熔点：N/A	1087769-36-5	C₁₇H₁₉N₃O₂
Propanamide, 2-chloro-N-[4-(2-phenyldiazenyl)phenyl]-	Propanamide, 2-chloro-N-[4-(2-phenyldiazenyl)phenyl]-	分子量：287.74 密度：N/A 沸点：N/A 熔点：N/A	882323-91-3	C₁₅H₁₄ClN₃O
[(3S,4S,5R)-4,5-diacetyloxy-6-(4-ethylphenoxy)-2-(iodomethyl)oxan-3-yl] acetate	[(3S,4S,5R)-4,5-diacetyloxy-6-(4-ethylphenoxy)-2-(iodomethyl)oxan-3-yl] acetate	分子量：520.3 密度：N/A 沸点：N/A 熔点：N/A	1033751-06-2	C₂₀H₂₅IO₈
Pentanoic acid, 5-[[2-methyl-4-[2-(2-methylphenyl)diazenyl]phenyl]amino]-5-oxo-	Pentanoic acid, 5-[[2-methyl-4-[2-(2-methylphenyl)diazenyl]phenyl]amino]-5-oxo-	分子量：339.4 密度：N/A 沸点：N/A 熔点：N/A	882325-24-8	C₁₉H₂₁N₃O₃
Cyclopentaneacetic acid, 1-[2-[[2-methyl-4-[2-(2-methylphenyl)diazenyl]phenyl]amino]-2-oxoethyl]-	Cyclopentaneacetic acid, 1-[2-[[2-methyl-4-[2-(2-methylphenyl)diazenyl]phenyl]amino]-2-oxoethyl]-	分子量：393.5 密度：N/A 沸点：N/A 熔点：N/A	882325-32-8	C₂₃H₂₇N₃O₃
3-Cyclohexene-1-carboxylic acid, 6-[[[2-methyl-4-[2-(2-methylphenyl)diazenyl]phenyl]amino]carbonyl]-	3-Cyclohexene-1-carboxylic acid, 6-[[[2-methyl-4-[2-(2-methylphenyl)diazenyl]phenyl]amino]carbonyl]-	分子量：377.4 密度：N/A 沸点：N/A 熔点：N/A	882325-47-5	C₂₂H₂₃N₃O₃
Benzoic acid, 2-[[[2-methyl-4-[2-(2-methylphenyl)diazenyl]phenyl]amino]carbonyl]-	Benzoic acid, 2-[[[2-methyl-4-[2-(2-methylphenyl)diazenyl]phenyl]amino]carbonyl]-	分子量：373.4 密度：N/A 沸点：N/A 熔点：N/A	882325-54-4	C₂₂H₁₉N₃O₃
Acetamide, 2-chloro-N-[2-methyl-4-[2-(2-methylphenyl)diazenyl]phenyl]-	Acetamide, 2-chloro-N-[2-methyl-4-[2-(2-methylphenyl)diazenyl]phenyl]-	分子量：301.77 密度：N/A 沸点：N/A 熔点：N/A	882325-61-3	C₁₆H₁₆ClN₃O
Carbamic acid, [2-methyl-4-[(2-methylphenyl)azo]phenyl]-, 2-methylpropyl ester (9CI)	Carbamic acid, [2-methyl-4-[(2-methylphenyl)azo]phenyl]-, 2-methylpropyl ester (9CI)	分子量：325.4 密度：N/A 沸点：N/A 熔点：N/A	882325-68-0	C₁₉H₂₃N₃O₂
Benzenamine, N-trifluoroacetyl-2-methyl-4-[(2-methylphenyl)azo]-	Benzenamine, N-trifluoroacetyl-2-methyl-4-[(2-methylphenyl)azo]-	分子量：321.30 密度：N/A 沸点：N/A 熔点：N/A	399-37-1	C₁₆H₁₄F₃N₃O
(1S,2R,6R,9R)-4,4,11,11-tetramethyl-N-[2-(4-nitroanilino)-2-oxoethyl]-3,5,7,10,12-pentaoxatricyclo[7.3.0.02,6]dodecane-8-carboxamide	(1S,2R,6R,9R)-4,4,11,11-tetramethyl-N-[2-(4-nitroanilino)-2-oxoethyl]-3,5,7,10,12-pentaoxatricyclo[7.3.0.02,6]dodecane-8-carboxamide	分子量：451.4 密度：N/A 沸点：N/A 熔点：N/A	1037291-20-5	C₂₀H₂₅N₃O₉
[(1-Cyanocyclohexyl)carbamoyl]methyl 3-methyl-2-phenylquinoline-4-carboxylate	[(1-Cyanocyclohexyl)carbamoyl]methyl 3-methyl-2-phenylquinoline-4-carboxylate	分子量：427.5 密度：N/A 沸点：N/A 熔点：N/A	920608-44-2	C₂₆H₂₅N₃O₃
4-(morpholinosulfonyl)-N-(2,2,6,6-tetramethylpiperidin-4-yl)benzamide	4-(morpholinosulfonyl)-N-(2,2,6,6-tetramethylpiperidin-4-yl)benzamide	分子量：409.5 密度：N/A 沸点：N/A 熔点：N/A	923845-65-2	C₂₀H₃₁N₃O₄S
2-Chloro-5-methyl-4-(trifluoromethylthio)phenol	2-Chloro-5-methyl-4-(trifluoromethylthio)phenol	分子量：242.65 密度：N/A 沸点：N/A 熔点：N/A	129644-75-3	C₈H₆ClF₃OS
N-(6-methoxypyridin-3-yl)pyridine-2-carboxamide	N-(6-methoxypyridin-3-yl)pyridine-2-carboxamide	分子量：229.23 密度：N/A 沸点：N/A 熔点：N/A	757184-42-2	C₁₂H₁₁N₃O₂
3-((4-Aminothieno[2,3-d]pyrimidin-2-yl)thio)propanenitrile	3-((4-Aminothieno[2,3-d]pyrimidin-2-yl)thio)propanenitrile	分子量：236.3 密度：N/A 沸点：N/A 熔点：N/A	930032-08-9	C₉H₈N₄S₂
6-Bromo-4-oxo-3(4H)-quinazolinepropanamide	6-Bromo-4-oxo-3(4H)-quinazolinepropanamide	分子量：296.12 密度：N/A 沸点：N/A 熔点：N/A	930032-10-3	C₁₁H₁₀BrN₃O₂
2-{3-[4,6-Dimethyl-2-(methylsulfanyl)pyrimidin-5-yl]propanamido}benzamide	2-{3-[4,6-Dimethyl-2-(methylsulfanyl)pyrimidin-5-yl]propanamido}benzamide	分子量：344.4 密度：N/A 沸点：N/A 熔点：N/A	924120-54-7	C₁₇H₂₀N₄O₂S
Methyl 2-[[2-[[(ethylamino)carbonyl]amino]-2-oxoethyl]amino]benzoate	Methyl 2-[[2-[[(ethylamino)carbonyl]amino]-2-oxoethyl]amino]benzoate	分子量：279.29 密度：N/A 沸点：N/A 熔点：N/A	923248-46-8	C₁₃H₁₇N₃O₄
4-Bromo-1-methyl-N-(thiazol-2-yl)-1H-pyrrole-2-carboxamide	4-Bromo-1-methyl-N-(thiazol-2-yl)-1H-pyrrole-2-carboxamide	分子量：286.15 密度：N/A 沸点：N/A 熔点：N/A	923701-18-2	C₉H₈BrN₃OS
N-[(2Z)-5-(ethylsulfanyl)-1,3,4-thiadiazol-2(3H)-ylidene]-2,3-dihydro-1-benzofuran-2-carboxamide	N-[(2Z)-5-(ethylsulfanyl)-1,3,4-thiadiazol-2(3H)-ylidene]-2,3-dihydro-1-benzofuran-2-carboxamide	分子量：307.4 密度：N/A 沸点：N/A 熔点：N/A	915914-52-2	C₁₃H₁₃N₃O₂S₂
N-[5-(4-methylphenyl)-1H-1,2,4-triazol-3-yl]-2,3-dihydro-1,4-benzodioxine-2-carboxamide	N-[5-(4-methylphenyl)-1H-1,2,4-triazol-3-yl]-2,3-dihydro-1,4-benzodioxine-2-carboxamide	分子量：336.3 密度：N/A 沸点：N/A 熔点：N/A	925548-42-1	C₁₈H₁₆N₄O₃
5-Benzyl-3-{[4-(2-phenylethenesulfonyl)piperazin-1-yl]methyl}imidazolidine-2,4-dione	5-Benzyl-3-{[4-(2-phenylethenesulfonyl)piperazin-1-yl]methyl}imidazolidine-2,4-dione	分子量：454.5 密度：N/A 沸点：N/A 熔点：N/A	1025738-77-5	C₂₃H₂₆N₄O₄S
1-(Piperidine-1-carbonyl)piperidine-4-carboxamide	1-(Piperidine-1-carbonyl)piperidine-4-carboxamide	分子量：239.31 密度：N/A 沸点：N/A 熔点：N/A	923106-63-2	C₁₂H₂₁N₃O₂
N-[2-[(3,4-Difluorophenyl)amino]-2-oxoethyl]cyclopropanecarboxamide	N-[2-[(3,4-Difluorophenyl)amino]-2-oxoethyl]cyclopropanecarboxamide	分子量：254.23 密度：N/A 沸点：N/A 熔点：N/A	923200-38-8	C₁₂H₁₂F₂N₂O₂
N-[(2E)-5-benzyl-1,3,4-thiadiazol-2(3H)-ylidene]pyridine-2-carboxamide	N-[(2E)-5-benzyl-1,3,4-thiadiazol-2(3H)-ylidene]pyridine-2-carboxamide	分子量：296.3 密度：N/A 沸点：N/A 熔点：N/A	924241-59-8	C₁₅H₁₂N₄OS
2-Acetamidophenyl 2-nitrobenzene-1-sulfonate	2-Acetamidophenyl 2-nitrobenzene-1-sulfonate	分子量：336.32 密度：N/A 沸点：N/A 熔点：N/A	924057-07-8	C₁₄H₁₂N₂O₆S
1-[2-(4-Chlorophenyl)ethenesulfonyl]-4-(pyridin-2-yl)piperazine	1-[2-(4-Chlorophenyl)ethenesulfonyl]-4-(pyridin-2-yl)piperazine	分子量：363.9 密度：N/A 沸点：N/A 熔点：N/A	925407-02-9	C₁₇H₁₈ClN₃O₂S
2-{4-[2-(4-Chlorophenyl)ethenesulfonyl]piperazin-1-yl}pyrimidine	2-{4-[2-(4-Chlorophenyl)ethenesulfonyl]piperazin-1-yl}pyrimidine	分子量：364.9 密度：N/A 沸点：N/A 熔点：N/A	925548-47-6	C₁₆H₁₇ClN₄O₂S
N-(3-Methoxyphenyl)-4-oxo-3-thiazolidineacetamide	N-(3-Methoxyphenyl)-4-oxo-3-thiazolidineacetamide	分子量：266.32 密度：N/A 沸点：N/A 熔点：N/A	923249-48-3	C₁₂H₁₄N₂O₃S
2-(4-formylphenoxy)-N-(3-oxo-1-phenylbutan-2-yl)acetamide	2-(4-formylphenoxy)-N-(3-oxo-1-phenylbutan-2-yl)acetamide	分子量：325.4 密度：N/A 沸点：N/A 熔点：N/A	923864-70-4	C₁₉H₁₉NO₄
N,5-dimethyl-2-phenyl-2H-1,2,3-triazole-4-carboxamide	N,5-dimethyl-2-phenyl-2H-1,2,3-triazole-4-carboxamide	分子量：216.24 密度：N/A 沸点：N/A 熔点：N/A	923217-20-3	C₁₁H₁₂N₄O