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
1-(4-fluorophenyl)-3-hydroxy-4-(phenylsulfonyl)-5-(3,4,5-trimethoxyphenyl)-1,5-dihydro-2H-pyrrol-2-one	1-(4-fluorophenyl)-3-hydroxy-4-(phenylsulfonyl)-5-(3,4,5-trimethoxyphenyl)-1,5-dihydro-2H-pyrrol-2-one	分子量：499.5 密度：N/A 沸点：N/A 熔点：N/A	880393-62-4	C₂₅H₂₂FNO₇S
1-Cyclopentyl-6-hydroxy-4-methyl-2-oxo-1,2-dihydropyridine-3-carbonitrile	1-Cyclopentyl-6-hydroxy-4-methyl-2-oxo-1,2-dihydropyridine-3-carbonitrile	分子量：218.25 密度：N/A 沸点：N/A 熔点：N/A	880393-64-6	C₁₂H₁₄N₂O₂
N-(4-ethyl-1,2,5-oxadiazol-3-yl)-4-propoxybenzamide	N-(4-ethyl-1,2,5-oxadiazol-3-yl)-4-propoxybenzamide	分子量：275.30 密度：N/A 沸点：N/A 熔点：N/A	880783-65-3	C₁₄H₁₇N₃O₃
N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(3-methoxybenzyl)-2-oxo-2H-chromene-3-carboxamide	N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(3-methoxybenzyl)-2-oxo-2H-chromene-3-carboxamide	分子量：427.5 密度：N/A 沸点：N/A 熔点：N/A	880395-40-4	C₂₂H₂₁NO₆S
N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-[(3-methylthiophen-2-yl)methyl]-2-propoxybenzamide	N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-[(3-methylthiophen-2-yl)methyl]-2-propoxybenzamide	分子量：407.6 密度：N/A 沸点：N/A 熔点：N/A	880395-46-0	C₂₀H₂₅NO₄S₂
3-chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(2-fluorobenzyl)benzamide	3-chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(2-fluorobenzyl)benzamide	分子量：381.8 密度：N/A 沸点：N/A 熔点：N/A	880395-71-1	C₁₈H₁₇ClFNO₃S
5-chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(2-fluorobenzyl)-3-methyl-1-benzofuran-2-carboxamide	5-chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(2-fluorobenzyl)-3-methyl-1-benzofuran-2-carboxamide	分子量：435.9 密度：N/A 沸点：N/A 熔点：N/A	880395-74-4	C₂₁H₁₉ClFNO₄S
2-(4-chloro-3,5-dimethylphenoxy)-N-(4-ethyl-1,2,5-oxadiazol-3-yl)acetamide	2-(4-chloro-3,5-dimethylphenoxy)-N-(4-ethyl-1,2,5-oxadiazol-3-yl)acetamide	分子量：309.75 密度：N/A 沸点：N/A 熔点：N/A	880395-86-8	C₁₄H₁₆ClN₃O₃
5-bromo-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(2-fluorobenzyl)-3-methyl-1-benzofuran-2-carboxamide	5-bromo-N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(2-fluorobenzyl)-3-methyl-1-benzofuran-2-carboxamide	分子量：480.3 密度：N/A 沸点：N/A 熔点：N/A	880395-92-6	C₂₁H₁₉BrFNO₄S
5-chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-(ethylsulfanyl)-N-[4-(propan-2-yl)benzyl]pyrimidine-4-carboxamide	5-chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-(ethylsulfanyl)-N-[4-(propan-2-yl)benzyl]pyrimidine-4-carboxamide	分子量：468.0 密度：N/A 沸点：N/A 熔点：N/A	880395-98-2	C₂₁H₂₆ClN₃O₃S₂
5-chloro-N-(5-chloro-2-methoxyphenyl)-2-(propylsulfanyl)pyrimidine-4-carboxamide	5-chloro-N-(5-chloro-2-methoxyphenyl)-2-(propylsulfanyl)pyrimidine-4-carboxamide	分子量：372.3 密度：N/A 沸点：N/A 熔点：N/A	880396-04-3	C₁₅H₁₅Cl₂N₃O₂S
5-chloro-N-(2,5-dimethoxyphenyl)-2-(ethylsulfanyl)pyrimidine-4-carboxamide	5-chloro-N-(2,5-dimethoxyphenyl)-2-(ethylsulfanyl)pyrimidine-4-carboxamide	分子量：353.8 密度：N/A 沸点：N/A 熔点：N/A	880396-07-6	C₁₅H₁₆ClN₃O₃S
5-chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-(ethylsulfanyl)pyrimidine-4-carboxamide	5-chloro-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-(ethylsulfanyl)pyrimidine-4-carboxamide	分子量：335.8 密度：N/A 沸点：N/A 熔点：N/A	880396-19-0	C₁₁H₁₄ClN₃O₃S₂
5-chloro-2-(ethylsulfanyl)-N-(4-methylphenyl)pyrimidine-4-carboxamide	5-chloro-2-(ethylsulfanyl)-N-(4-methylphenyl)pyrimidine-4-carboxamide	分子量：307.8 密度：N/A 沸点：N/A 熔点：N/A	880396-22-5	C₁₄H₁₄ClN₃OS
2-(6-methyl-1-benzofuran-3-yl)-N-{4-[(4-methylpyrimidin-2-yl)sulfamoyl]phenyl}acetamide	2-(6-methyl-1-benzofuran-3-yl)-N-{4-[(4-methylpyrimidin-2-yl)sulfamoyl]phenyl}acetamide	分子量：436.5 密度：N/A 沸点：N/A 熔点：N/A	880396-28-1	C₂₂H₂₀N₄O₄S
N-[2-(3,4-dimethoxyphenyl)ethyl]-2-(6-methyl-1-benzofuran-3-yl)acetamide	N-[2-(3,4-dimethoxyphenyl)ethyl]-2-(6-methyl-1-benzofuran-3-yl)acetamide	分子量：353.4 密度：N/A 沸点：N/A 熔点：N/A	880396-31-6	C₂₁H₂₃NO₄
6-methyl-4-oxo-N-[3-(trifluoromethyl)phenyl]-4H-chromene-2-carboxamide	6-methyl-4-oxo-N-[3-(trifluoromethyl)phenyl]-4H-chromene-2-carboxamide	分子量：347.3 密度：N/A 沸点：N/A 熔点：N/A	881217-47-6	C₁₈H₁₂F₃NO₃
6-methyl-4-oxo-N-[2-(trifluoromethyl)phenyl]-4H-chromene-2-carboxamide	6-methyl-4-oxo-N-[2-(trifluoromethyl)phenyl]-4H-chromene-2-carboxamide	分子量：347.3 密度：N/A 沸点：N/A 熔点：N/A	880396-53-2	C₁₈H₁₂F₃NO₃
2-(4-chlorophenoxy)-N-[4-(3,4-diethoxyphenyl)-1,2,5-oxadiazol-3-yl]acetamide	2-(4-chlorophenoxy)-N-[4-(3,4-diethoxyphenyl)-1,2,5-oxadiazol-3-yl]acetamide	分子量：417.8 密度：N/A 沸点：N/A 熔点：N/A	880396-71-4	C₂₀H₂₀ClN₃O₅
2-(2-chlorophenoxy)-N-[4-(3,4-diethoxyphenyl)-1,2,5-oxadiazol-3-yl]propanamide	2-(2-chlorophenoxy)-N-[4-(3,4-diethoxyphenyl)-1,2,5-oxadiazol-3-yl]propanamide	分子量：431.9 密度：N/A 沸点：N/A 熔点：N/A	880396-74-7	C₂₁H₂₂ClN₃O₅
N-[4-(3,4-diethoxyphenyl)-1,2,5-oxadiazol-3-yl]-2-(4-fluorophenoxy)propanamide	N-[4-(3,4-diethoxyphenyl)-1,2,5-oxadiazol-3-yl]-2-(4-fluorophenoxy)propanamide	分子量：415.4 密度：N/A 沸点：N/A 熔点：N/A	880396-80-5	C₂₁H₂₂FN₃O₅
N-[4-(3,4-diethoxyphenyl)-1,2,5-oxadiazol-3-yl]-2-[4-(propan-2-yl)phenoxy]acetamide	N-[4-(3,4-diethoxyphenyl)-1,2,5-oxadiazol-3-yl]-2-[4-(propan-2-yl)phenoxy]acetamide	分子量：425.5 密度：N/A 沸点：N/A 熔点：N/A	880396-83-8	C₂₃H₂₇N₃O₅
N-[4-(3,4-diethoxyphenyl)-1,2,5-oxadiazol-3-yl]thiophene-2-carboxamide	N-[4-(3,4-diethoxyphenyl)-1,2,5-oxadiazol-3-yl]thiophene-2-carboxamide	分子量：359.4 密度：N/A 沸点：N/A 熔点：N/A	881217-48-7	C₁₇H₁₇N₃O₄S
N-[4-(3,4-diethoxyphenyl)-1,2,5-oxadiazol-3-yl]-2-(2-fluorophenoxy)butanamide	N-[4-(3,4-diethoxyphenyl)-1,2,5-oxadiazol-3-yl]-2-(2-fluorophenoxy)butanamide	分子量：429.4 密度：N/A 沸点：N/A 熔点：N/A	880396-86-1	C₂₂H₂₄FN₃O₅
N-[4-(3,4-diethoxyphenyl)-1,2,5-oxadiazol-3-yl]-2-fluorobenzamide	N-[4-(3,4-diethoxyphenyl)-1,2,5-oxadiazol-3-yl]-2-fluorobenzamide	分子量：371.4 密度：N/A 沸点：N/A 熔点：N/A	880396-89-4	C₁₉H₁₈FN₃O₄
N-[4-(3,4-diethoxyphenyl)-1,2,5-oxadiazol-3-yl]-2-(4-fluorophenoxy)acetamide	N-[4-(3,4-diethoxyphenyl)-1,2,5-oxadiazol-3-yl]-2-(4-fluorophenoxy)acetamide	分子量：401.4 密度：N/A 沸点：N/A 熔点：N/A	880397-14-8	C₂₀H₂₀FN₃O₅
methyl 4-(4-bromobenzoyl)-3,4-dihydro-2H-1,4-benzoxazine-2-carboxylate	methyl 4-(4-bromobenzoyl)-3,4-dihydro-2H-1,4-benzoxazine-2-carboxylate	分子量：376.2 密度：N/A 沸点：N/A 熔点：N/A	880397-30-8	C₁₇H₁₄BrNO₄
(5Z)-4-methyl-5-{[3-(4-methylphenyl)-1-phenyl-1H-pyrazol-4-yl]methylidene}-2,6-dioxo-1-(tetrahydrofuran-2-ylmethyl)-1,2,5,6-tetrahydropyridine-3-carbonitrile	(5Z)-4-methyl-5-{[3-(4-methylphenyl)-1-phenyl-1H-pyrazol-4-yl]methylidene}-2,6-dioxo-1-(tetrahydrofuran-2-ylmethyl)-1,2,5,6-tetrahydropyridine-3-carbonitrile	分子量：478.5 密度：N/A 沸点：N/A 熔点：N/A	956932-93-7	C₂₉H₂₆N₄O₃
(5Z)-5-(3,4-dimethoxybenzylidene)-4-methyl-2,6-dioxo-1-(tetrahydrofuran-2-ylmethyl)-1,2,5,6-tetrahydropyridine-3-carbonitrile	(5Z)-5-(3,4-dimethoxybenzylidene)-4-methyl-2,6-dioxo-1-(tetrahydrofuran-2-ylmethyl)-1,2,5,6-tetrahydropyridine-3-carbonitrile	分子量：382.4 密度：N/A 沸点：N/A 熔点：N/A	880399-80-4	C₂₁H₂₂N₂O₅
(5Z)-5-{[5-(2,4-dichlorophenyl)furan-2-yl]methylidene}-4-methyl-2,6-dioxo-1-(tetrahydrofuran-2-ylmethyl)-1,2,5,6-tetrahydropyridine-3-carbonitrile	(5Z)-5-{[5-(2,4-dichlorophenyl)furan-2-yl]methylidene}-4-methyl-2,6-dioxo-1-(tetrahydrofuran-2-ylmethyl)-1,2,5,6-tetrahydropyridine-3-carbonitrile	分子量：457.3 密度：N/A 沸点：N/A 熔点：N/A	880399-84-8	C₂₃H₁₈Cl₂N₂O₄
(5Z)-5-{[5-(2,4-dichlorophenyl)furan-2-yl]methylidene}-1-(2-methoxyethyl)-4-methyl-2,6-dioxo-1,2,5,6-tetrahydropyridine-3-carbonitrile	(5Z)-5-{[5-(2,4-dichlorophenyl)furan-2-yl]methylidene}-1-(2-methoxyethyl)-4-methyl-2,6-dioxo-1,2,5,6-tetrahydropyridine-3-carbonitrile	分子量：431.3 密度：N/A 沸点：N/A 熔点：N/A	880399-91-7	C₂₁H₁₆Cl₂N₂O₄
(5Z)-5-{[5-(4-acetylphenyl)furan-2-yl]methylidene}-1-(2-methoxyethyl)-4-methyl-2,6-dioxo-1,2,5,6-tetrahydropyridine-3-carbonitrile	(5Z)-5-{[5-(4-acetylphenyl)furan-2-yl]methylidene}-1-(2-methoxyethyl)-4-methyl-2,6-dioxo-1,2,5,6-tetrahydropyridine-3-carbonitrile	分子量：404.4 密度：N/A 沸点：N/A 熔点：N/A	880399-95-1	C₂₃H₂₀N₂O₅
(5Z)-1-(2-methoxyethyl)-4-methyl-5-{[3-(4-methylphenyl)-1-phenyl-1H-pyrazol-4-yl]methylidene}-2,6-dioxo-1,2,5,6-tetrahydropyridine-3-carbonitrile	(5Z)-1-(2-methoxyethyl)-4-methyl-5-{[3-(4-methylphenyl)-1-phenyl-1H-pyrazol-4-yl]methylidene}-2,6-dioxo-1,2,5,6-tetrahydropyridine-3-carbonitrile	分子量：452.5 密度：N/A 沸点：N/A 熔点：N/A	956957-98-5	C₂₇H₂₄N₄O₃
N-(6-chloro-2-phenylimidazo[1,2-a]pyridin-3-yl)-2-methylpropanamide	N-(6-chloro-2-phenylimidazo[1,2-a]pyridin-3-yl)-2-methylpropanamide	分子量：313.8 密度：N/A 沸点：N/A 熔点：N/A	880400-37-3	C₁₇H₁₆ClN₃O
2-methyl-N-(6-methyl-2-phenylimidazo[1,2-a]pyridin-3-yl)propanamide	2-methyl-N-(6-methyl-2-phenylimidazo[1,2-a]pyridin-3-yl)propanamide	分子量：293.4 密度：N/A 沸点：N/A 熔点：N/A	880400-94-2	C₁₈H₁₉N₃O
(Z)-2-(5-(2-(2-((4-fluorophenyl)amino)-2-oxoethoxy)benzylidene)-4-oxo-2-thioxothiazolidin-3-yl)acetic acid	(Z)-2-(5-(2-(2-((4-fluorophenyl)amino)-2-oxoethoxy)benzylidene)-4-oxo-2-thioxothiazolidin-3-yl)acetic acid	分子量：446.5 密度：N/A 沸点：N/A 熔点：N/A	867311-81-7	C₂₀H₁₅FN₂O₅S₂
N-[4-(difluoromethoxy)phenyl]-2-(5-ethyl-1-benzofuran-3-yl)acetamide	N-[4-(difluoromethoxy)phenyl]-2-(5-ethyl-1-benzofuran-3-yl)acetamide	分子量：345.3 密度：N/A 沸点：N/A 熔点：N/A	880402-86-8	C₁₉H₁₇F₂NO₃
N-(2,5-dimethylphenyl)-2-(5-methyl-1-benzofuran-3-yl)acetamide	N-(2,5-dimethylphenyl)-2-(5-methyl-1-benzofuran-3-yl)acetamide	分子量：293.4 密度：N/A 沸点：N/A 熔点：N/A	880404-31-9	C₁₉H₁₉NO₂
N-[2-(3,4-dimethoxyphenyl)ethyl]-2-[5-(propan-2-yl)-1-benzofuran-3-yl]acetamide	N-[2-(3,4-dimethoxyphenyl)ethyl]-2-[5-(propan-2-yl)-1-benzofuran-3-yl]acetamide	分子量：381.5 密度：N/A 沸点：N/A 熔点：N/A	880404-35-3	C₂₃H₂₇NO₄
N-benzyl-N-(furan-2-ylmethyl)-2-(5-methyl-1-benzofuran-3-yl)acetamide	N-benzyl-N-(furan-2-ylmethyl)-2-(5-methyl-1-benzofuran-3-yl)acetamide	分子量：359.4 密度：N/A 沸点：N/A 熔点：N/A	880404-42-2	C₂₃H₂₁NO₃
2-(5-methyl-1-benzofuran-3-yl)-N-(4-methylbenzyl)acetamide	2-(5-methyl-1-benzofuran-3-yl)-N-(4-methylbenzyl)acetamide	分子量：293.4 密度：N/A 沸点：N/A 熔点：N/A	880404-50-2	C₁₉H₁₉NO₂
N-(3-chlorobenzyl)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-(5-methyl-1-benzofuran-3-yl)acetamide	N-(3-chlorobenzyl)-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-(5-methyl-1-benzofuran-3-yl)acetamide	分子量：431.9 密度：N/A 沸点：N/A 熔点：N/A	880404-61-5	C₂₂H₂₂ClNO₄S
N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-(5-methyl-1-benzofuran-3-yl)-N-(4-propoxybenzyl)acetamide	N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-(5-methyl-1-benzofuran-3-yl)-N-(4-propoxybenzyl)acetamide	分子量：455.6 密度：N/A 沸点：N/A 熔点：N/A	880404-65-9	C₂₅H₂₉NO₅S
N-benzyl-N-methyl-2-(5-methyl-1-benzofuran-3-yl)acetamide	N-benzyl-N-methyl-2-(5-methyl-1-benzofuran-3-yl)acetamide	分子量：293.4 密度：N/A 沸点：N/A 熔点：N/A	880404-69-3	C₁₉H₁₉NO₂
N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-(5-methyl-1-benzofuran-3-yl)-N-(thiophen-2-ylmethyl)acetamide	N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-(5-methyl-1-benzofuran-3-yl)-N-(thiophen-2-ylmethyl)acetamide	分子量：403.5 密度：N/A 沸点：N/A 熔点：N/A	880404-81-9	C₂₀H₂₁NO₄S₂
N-benzyl-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-(5-methyl-1-benzofuran-3-yl)acetamide	N-benzyl-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-(5-methyl-1-benzofuran-3-yl)acetamide	分子量：397.5 密度：N/A 沸点：N/A 熔点：N/A	880404-85-3	C₂₂H₂₃NO₄S
4-Benzyl-1-[(5-methyl-1-benzofuran-3-yl)acetyl]piperidine	4-Benzyl-1-[(5-methyl-1-benzofuran-3-yl)acetyl]piperidine	分子量：347.4 密度：N/A 沸点：N/A 熔点：N/A	880404-89-7	C₂₃H₂₅NO₂
N-(1,3-benzodioxol-5-ylmethyl)-2-(5-methyl-1-benzofuran-3-yl)acetamide	N-(1,3-benzodioxol-5-ylmethyl)-2-(5-methyl-1-benzofuran-3-yl)acetamide	分子量：323.3 密度：N/A 沸点：N/A 熔点：N/A	880404-93-3	C₁₉H₁₇NO₄
N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(furan-2-ylmethyl)-2-(5-methyl-1-benzofuran-3-yl)acetamide	N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(furan-2-ylmethyl)-2-(5-methyl-1-benzofuran-3-yl)acetamide	分子量：387.5 密度：N/A 沸点：N/A 熔点：N/A	880404-97-7	C₂₀H₂₁NO₅S
N-(furan-2-ylmethyl)-N-(4-methylbenzyl)-2-oxo-2H-chromene-3-carboxamide	N-(furan-2-ylmethyl)-N-(4-methylbenzyl)-2-oxo-2H-chromene-3-carboxamide	分子量：373.4 密度：N/A 沸点：N/A 熔点：N/A	880405-05-0	C₂₃H₁₉NO₄