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
ethyl 2-{[3-(3,4-dimethoxyphenyl)-4-methyl-2-oxo-2H-chromen-7-yl]oxy}propanoate	ethyl 2-{[3-(3,4-dimethoxyphenyl)-4-methyl-2-oxo-2H-chromen-7-yl]oxy}propanoate	分子量：412.4 密度：N/A 沸点：N/A 熔点：N/A	869080-93-3	C₂₃H₂₄O₇
N-[(Z)-[amino(pyridin-2-yl)methylidene]amino]-2-(4-methylphenoxy)acetamide	N-[(Z)-[amino(pyridin-2-yl)methylidene]amino]-2-(4-methylphenoxy)acetamide	分子量：284.31 密度：N/A 沸点：N/A 熔点：N/A	879919-27-4	C₁₅H₁₆N₄O₂
N-(3-{[4-(2-hydroxyethyl)piperazinyl](3-methoxyphenyl)methyl}-4,5,6,7-tetrahyd robenzo[b]thiophen-2-yl)acetamide	N-(3-{[4-(2-hydroxyethyl)piperazinyl](3-methoxyphenyl)methyl}-4,5,6,7-tetrahyd robenzo[b]thiophen-2-yl)acetamide	分子量：443.6 密度：N/A 沸点：N/A 熔点：N/A	867135-68-0	C₂₄H₃₃N₃O₃S
N-(3-((4-(2-hydroxyethyl)piperazin-1-yl)(2-methoxyphenyl)methyl)-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)acetamide	N-(3-((4-(2-hydroxyethyl)piperazin-1-yl)(2-methoxyphenyl)methyl)-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)acetamide	分子量：443.6 密度：N/A 沸点：N/A 熔点：N/A	867135-72-6	C₂₄H₃₃N₃O₃S
Ethyl 1-((2-acetamido-4,5,6,7-tetrahydrobenzo[b]thiophen-3-yl)(2-chlorophenyl)methyl)piperidine-4-carboxylate	Ethyl 1-((2-acetamido-4,5,6,7-tetrahydrobenzo[b]thiophen-3-yl)(2-chlorophenyl)methyl)piperidine-4-carboxylate	分子量：475.0 密度：N/A 沸点：N/A 熔点：N/A	867135-74-8	C₂₅H₃₁ClN₂O₃S
N-(1,1-dioxothiolan-3-yl)(2-methyl-4,9-dioxonaphtho[2,3-b]furan-3-yl)carboxami de	N-(1,1-dioxothiolan-3-yl)(2-methyl-4,9-dioxonaphtho[2,3-b]furan-3-yl)carboxami de	分子量：373.4 密度：N/A 沸点：N/A 熔点：N/A	867135-81-7	C₁₈H₁₅NO₆S
1-Cyclopentyl-N-(3,4-difluorophenyl)-1H-pyrazole-5-methanamine	1-Cyclopentyl-N-(3,4-difluorophenyl)-1H-pyrazole-5-methanamine	分子量：277.31 密度：N/A 沸点：N/A 熔点：N/A	1006437-27-9	C₁₅H₁₇F₂N₃
(E)-5-(4-bromophenyl)-4-((3,4-dimethoxybenzylidene)amino)-4H-1,2,4-triazole-3-thiol	(E)-5-(4-bromophenyl)-4-((3,4-dimethoxybenzylidene)amino)-4H-1,2,4-triazole-3-thiol	分子量：419.3 密度：N/A 沸点：N/A 熔点：N/A	328021-12-1	C₁₇H₁₅BrN₄O₂S
2-amino-N-(2-methylphenyl)thiophene-3-carboxamide	2-amino-N-(2-methylphenyl)thiophene-3-carboxamide	分子量：232.30 密度：N/A 沸点：N/A 熔点：N/A	667435-69-0	C₁₂H₁₂N₂OS
1-Cyclohexylpyrrolidin-2-imine	1-Cyclohexylpyrrolidin-2-imine	分子量：166.26 密度：N/A 沸点：N/A 熔点：N/A	7561-78-6	C₁₀H₁₈N₂
4-phenyl-N-(5-phenyl-1,3,4-thiadiazol-2-yl)butanamide	4-phenyl-N-(5-phenyl-1,3,4-thiadiazol-2-yl)butanamide	分子量：323.4 密度：N/A 沸点：N/A 熔点：N/A	667435-78-1	C₁₈H₁₇N₃OS
N-(4-chloro-2-fluorophenyl)-N-(furan-2-ylcarbonyl)furan-2-carboxamide	N-(4-chloro-2-fluorophenyl)-N-(furan-2-ylcarbonyl)furan-2-carboxamide	分子量：333.70 密度：N/A 沸点：N/A 熔点：N/A	667436-04-6	C₁₆H₉ClFNO₄
Ethyl 2-(2,3-dichlorophenoxy)-2-methylpropanoate	Ethyl 2-(2,3-dichlorophenoxy)-2-methylpropanoate	分子量：277.14 密度：N/A 沸点：N/A 熔点：N/A	667436-08-0	C₁₂H₁₄Cl₂O₃
2-chloro-N-(chloroacetyl)-N-(pyridin-2-yl)acetamide	2-chloro-N-(chloroacetyl)-N-(pyridin-2-yl)acetamide	分子量：247.07 密度：N/A 沸点：N/A 熔点：N/A	667436-16-0	C₉H₈Cl₂N₂O₂
2-cyano-2-cyclopentylidene-N-(2-methylphenyl)acetamide	2-cyano-2-cyclopentylidene-N-(2-methylphenyl)acetamide	分子量：240.30 密度：N/A 沸点：N/A 熔点：N/A	667436-20-6	C₁₅H₁₆N₂O
N-ethyl-1,5-dimethyl-1H-pyrazole-4-sulfonamide	N-ethyl-1,5-dimethyl-1H-pyrazole-4-sulfonamide	分子量：203.26 密度：N/A 沸点：N/A 熔点：N/A	1005907-96-9	C₇H₁₃N₃O₂S
2-[(5-methylthiophen-3-yl)carbonyl]-N-propylhydrazinecarbothioamide	2-[(5-methylthiophen-3-yl)carbonyl]-N-propylhydrazinecarbothioamide	分子量：257.4 密度：N/A 沸点：N/A 熔点：N/A	667436-26-2	C₁₀H₁₅N₃OS₂
1-(4-bromophenyl)-3-(3,4-dichlorophenyl)-1-(6,7,8,9-tetrahydro-5H-[1,2,4]triazolo[4,3-a]azepin-3-ylmethyl)urea	1-(4-bromophenyl)-3-(3,4-dichlorophenyl)-1-(6,7,8,9-tetrahydro-5H-[1,2,4]triazolo[4,3-a]azepin-3-ylmethyl)urea	分子量：509.2 密度：N/A 沸点：N/A 熔点：N/A	397291-11-1	C₂₁H₂₀BrCl₂N₅O
2-[(4-fluorophenoxy)acetyl]-N-(prop-2-en-1-yl)hydrazinecarbothioamide	2-[(4-fluorophenoxy)acetyl]-N-(prop-2-en-1-yl)hydrazinecarbothioamide	分子量：283.32 密度：N/A 沸点：N/A 熔点：N/A	667436-32-0	C₁₂H₁₄FN₃O₂S
[6-Bromo-2-(4-ethylphenyl)quinolin-4-yl][4-(4-chlorobenzyl)piperazin-1-yl]methanone	[6-Bromo-2-(4-ethylphenyl)quinolin-4-yl][4-(4-chlorobenzyl)piperazin-1-yl]methanone	分子量：548.9 密度：N/A 沸点：N/A 熔点：N/A	667437-09-4	C₂₉H₂₇BrClN₃O
3-[(1,3-Benzodioxol-5-ylcarbonyl)amino]-5-methyl-4-oxo-2-sulfanyl-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylic acid	3-[(1,3-Benzodioxol-5-ylcarbonyl)amino]-5-methyl-4-oxo-2-sulfanyl-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylic acid	分子量：405.4 密度：N/A 沸点：N/A 熔点：N/A	667437-24-3	C₁₆H₁₁N₃O₆S₂
2-amino-N-(4-fluorophenyl)thiophene-3-carboxamide	2-amino-N-(4-fluorophenyl)thiophene-3-carboxamide	分子量：236.27 密度：N/A 沸点：N/A 熔点：N/A	667437-52-7	C₁₁H₉FN₂OS
2-Hydroxy-5-[(trifluoroacetyl)amino]benzoic acid	2-Hydroxy-5-[(trifluoroacetyl)amino]benzoic acid	分子量：249.14 密度：N/A 沸点：N/A 熔点：N/A	667437-57-2	C₉H₆F₃NO₄
4-(2,4-dimethoxyphenyl)-4H-1,2,4-triazole-3-thiol	4-(2,4-dimethoxyphenyl)-4H-1,2,4-triazole-3-thiol	分子量：237.28 密度：N/A 沸点：N/A 熔点：N/A	667437-97-0	C₁₀H₁₁N₃O₂S
N-(2,4-dichlorophenyl)-4-hydroxy-3,6,6-trimethyl-4,5,6,7-tetrahydro-1-benzofuran-2-carboxamide	N-(2,4-dichlorophenyl)-4-hydroxy-3,6,6-trimethyl-4,5,6,7-tetrahydro-1-benzofuran-2-carboxamide	分子量：368.3 密度：N/A 沸点：N/A 熔点：N/A	879915-17-0	C₁₈H₁₉Cl₂NO₃
3-methyl-N-(1,3-thiazol-2-yl)-1,2-oxazole-5-carboxamide	3-methyl-N-(1,3-thiazol-2-yl)-1,2-oxazole-5-carboxamide	分子量：209.23 密度：N/A 沸点：N/A 熔点：N/A	903340-67-0	C₈H₇N₃O₂S
N-(2,6-dibromo-4-fluorophenyl)acetamide	N-(2,6-dibromo-4-fluorophenyl)acetamide	分子量：310.95 密度：N/A 沸点：N/A 熔点：N/A	392-14-3	C₈H₆Br₂FNO
Na(2)-[3-Chloro-4-(trifluoromethyl)phenyl]-N-[(4-methylphenyl)methyl]-N-[3-(4-morpholinyl)propyl]thiourea	Na(2)-[3-Chloro-4-(trifluoromethyl)phenyl]-N-[(4-methylphenyl)methyl]-N-[3-(4-morpholinyl)propyl]thiourea	分子量：486.0 密度：N/A 沸点：N/A 熔点：N/A	886370-49-6	C₂₃H₂₇ClF₃N₃OS
3,4,5-trimethoxy-N-{4-[(4-methylpiperazin-1-yl)sulfonyl]phenyl}benzamide	3,4,5-trimethoxy-N-{4-[(4-methylpiperazin-1-yl)sulfonyl]phenyl}benzamide	分子量：449.5 密度：N/A 沸点：N/A 熔点：N/A	879917-22-3	C₂₁H₂₇N₃O₆S
N-{4-[(4-methylpiperazin-1-yl)sulfonyl]phenyl}-2-(naphthalen-2-yloxy)acetamide	N-{4-[(4-methylpiperazin-1-yl)sulfonyl]phenyl}-2-(naphthalen-2-yloxy)acetamide	分子量：439.5 密度：N/A 沸点：N/A 熔点：N/A	879917-23-4	C₂₃H₂₅N₃O₄S
5-(4-chlorophenyl)-4-(3-fluoro-4-methoxybenzoyl)-3-hydroxy-2,5-dihydro-1H-pyrrol-2-one	5-(4-chlorophenyl)-4-(3-fluoro-4-methoxybenzoyl)-3-hydroxy-2,5-dihydro-1H-pyrrol-2-one	分子量：361.7 密度：N/A 沸点：N/A 熔点：N/A	890014-61-6	C₁₈H₁₃ClFNO₄
N-(4-tert-butylbenzyl)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-4-methylbenzamide	N-(4-tert-butylbenzyl)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-4-methylbenzamide	分子量：399.5 密度：N/A 沸点：N/A 熔点：N/A	879929-61-0	C₂₃H₂₉NO₃S
4-[(2,4-dimethyl-1,3-thiazol-5-yl)carbonyl]-5-(4-ethoxyphenyl)-3-hydroxy-1-[5-(propan-2-yl)-1,3,4-thiadiazol-2-yl]-1,5-dihydro-2H-pyrrol-2-one	4-[(2,4-dimethyl-1,3-thiazol-5-yl)carbonyl]-5-(4-ethoxyphenyl)-3-hydroxy-1-[5-(propan-2-yl)-1,3,4-thiadiazol-2-yl]-1,5-dihydro-2H-pyrrol-2-one	分子量：484.6 密度：N/A 沸点：N/A 熔点：N/A	879929-90-5	C₂₃H₂₄N₄O₄S₂
4-chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-[(3-methylthiophen-2-yl)methyl]benzamide	4-chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-[(3-methylthiophen-2-yl)methyl]benzamide	分子量：383.9 密度：N/A 沸点：N/A 熔点：N/A	881442-80-4	C₁₇H₁₈ClNO₃S₂
N-(4-tert-butylbenzyl)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-3,4,5-trimethoxybenzamide	N-(4-tert-butylbenzyl)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-3,4,5-trimethoxybenzamide	分子量：475.6 密度：N/A 沸点：N/A 熔点：N/A	879930-07-1	C₂₅H₃₃NO₆S
N-(4-tert-butylbenzyl)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-4-fluorobenzamide	N-(4-tert-butylbenzyl)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-4-fluorobenzamide	分子量：403.5 密度：N/A 沸点：N/A 熔点：N/A	879930-12-8	C₂₂H₂₆FNO₃S
N-(4-tert-butylbenzyl)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-fluorobenzamide	N-(4-tert-butylbenzyl)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-fluorobenzamide	分子量：403.5 密度：N/A 沸点：N/A 熔点：N/A	881442-88-2	C₂₂H₂₆FNO₃S
4-bromo-N-(4-tert-butylbenzyl)-N-(1,1-dioxidotetrahydrothiophen-3-yl)benzamide	4-bromo-N-(4-tert-butylbenzyl)-N-(1,1-dioxidotetrahydrothiophen-3-yl)benzamide	分子量：464.4 密度：N/A 沸点：N/A 熔点：N/A	879930-23-1	C₂₂H₂₆BrNO₃S
N-(1,1-dioxidotetrahydrothiophen-3-yl)-4-methyl-N-[(5-methylfuran-2-yl)methyl]benzamide	N-(1,1-dioxidotetrahydrothiophen-3-yl)-4-methyl-N-[(5-methylfuran-2-yl)methyl]benzamide	分子量：347.4 密度：N/A 沸点：N/A 熔点：N/A	879930-29-7	C₁₈H₂₁NO₄S
2-(4-chlorophenoxy)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-[(5-methylfuran-2-yl)methyl]acetamide	2-(4-chlorophenoxy)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-[(5-methylfuran-2-yl)methyl]acetamide	分子量：397.9 密度：N/A 沸点：N/A 熔点：N/A	879930-40-2	C₁₈H₂₀ClNO₅S
4-chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-[(5-methylfuran-2-yl)methyl]benzamide	4-chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-[(5-methylfuran-2-yl)methyl]benzamide	分子量：367.8 密度：N/A 沸点：N/A 熔点：N/A	879930-46-8	C₁₇H₁₈ClNO₄S
4-bromo-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-[(5-methylfuran-2-yl)methyl]benzamide	4-bromo-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-[(5-methylfuran-2-yl)methyl]benzamide	分子量：412.3 密度：N/A 沸点：N/A 熔点：N/A	879930-52-6	C₁₇H₁₈BrNO₄S
2-cyano-N-[(furan-2-yl)methyl]-3-(1-methyl-1H-pyrazol-4-yl)prop-2-enamide	2-cyano-N-[(furan-2-yl)methyl]-3-(1-methyl-1H-pyrazol-4-yl)prop-2-enamide	分子量：256.26 密度：N/A 沸点：N/A 熔点：N/A	1005867-69-5	C₁₃H₁₂N₄O₂
N-(4-tert-butylbenzyl)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-(4-methylphenoxy)acetamide	N-(4-tert-butylbenzyl)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-(4-methylphenoxy)acetamide	分子量：429.6 密度：N/A 沸点：N/A 熔点：N/A	879932-96-4	C₂₄H₃₁NO₄S
N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(4-fluorobenzyl)-2-[5-methyl-2-(propan-2-yl)phenoxy]acetamide	N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(4-fluorobenzyl)-2-[5-methyl-2-(propan-2-yl)phenoxy]acetamide	分子量：433.5 密度：N/A 沸点：N/A 熔点：N/A	879933-39-8	C₂₃H₂₈FNO₄S
Dimethyl 2,6-dimethyl-4-(1-phenylethyl)-1,4-dihydropyridine-3,5-dicarboxylate	Dimethyl 2,6-dimethyl-4-(1-phenylethyl)-1,4-dihydropyridine-3,5-dicarboxylate	分子量：329.4 密度：N/A 沸点：N/A 熔点：N/A	879933-78-5	C₁₉H₂₃NO₄
N-(1,1-dioxidotetrahydrothiophen-3-yl)-3,4,5-trimethoxy-N-[(3-methylthiophen-2-yl)methyl]benzamide	N-(1,1-dioxidotetrahydrothiophen-3-yl)-3,4,5-trimethoxy-N-[(3-methylthiophen-2-yl)methyl]benzamide	分子量：439.5 密度：N/A 沸点：N/A 熔点：N/A	879936-59-1	C₂₀H₂₅NO₆S₂
N-(1,1-dioxidotetrahydrothiophen-3-yl)-4-methyl-N-(naphthalen-1-ylmethyl)benzamide	N-(1,1-dioxidotetrahydrothiophen-3-yl)-4-methyl-N-(naphthalen-1-ylmethyl)benzamide	分子量：393.5 密度：N/A 沸点：N/A 熔点：N/A	879936-74-0	C₂₃H₂₃NO₃S
1-(3-(Allyloxy)phenyl)-7-methyl-2-(3-morpholinopropyl)-1,2-dihydrochromeno[2,3-c]pyrrole-3,9-dione	1-(3-(Allyloxy)phenyl)-7-methyl-2-(3-morpholinopropyl)-1,2-dihydrochromeno[2,3-c]pyrrole-3,9-dione	分子量：474.5 密度：N/A 沸点：N/A 熔点：N/A	879936-95-5	C₂₈H₃₀N₂O₅
1-(4-Ethoxy-3-methoxyphenyl)-7-methyl-2-(3-morpholinopropyl)-1,2-dihydrochromeno[2,3-c]pyrrole-3,9-dione	1-(4-Ethoxy-3-methoxyphenyl)-7-methyl-2-(3-morpholinopropyl)-1,2-dihydrochromeno[2,3-c]pyrrole-3,9-dione	分子量：492.6 密度：N/A 沸点：N/A 熔点：N/A	879937-02-7	C₂₈H₃₂N₂O₆