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
2-(5-methyl-1H-tetrazol-1-yl)-N-(4-phenylbutan-2-yl)benzamide	2-(5-methyl-1H-tetrazol-1-yl)-N-(4-phenylbutan-2-yl)benzamide	分子量：335.4 密度：N/A 沸点：N/A 熔点：N/A	1324069-18-2	C₁₉H₂₁N₅O
ethyl 4-{[6-oxo-3-(thiomorpholin-4-yl)pyridazin-1(6H)-yl]acetyl}piperazine-1-carboxylate	ethyl 4-{[6-oxo-3-(thiomorpholin-4-yl)pyridazin-1(6H)-yl]acetyl}piperazine-1-carboxylate	分子量：395.5 密度：N/A 沸点：N/A 熔点：N/A	1324073-05-3	C₁₇H₂₅N₅O₄S
[4-(3-Methoxyphenyl)piperazin-1-yl][3-methyl-6-(propan-2-yl)[1,2]oxazolo[5,4-b]pyridin-4-yl]methanone	[4-(3-Methoxyphenyl)piperazin-1-yl][3-methyl-6-(propan-2-yl)[1,2]oxazolo[5,4-b]pyridin-4-yl]methanone	分子量：394.5 密度：N/A 沸点：N/A 熔点：N/A	1324055-96-0	C₂₂H₂₆N₄O₃
3,4-dimethyl-N-[(2Z)-5-(tetrahydrofuran-2-yl)-1,3,4-thiadiazol-2(3H)-ylidene]-2-(1H-tetrazol-1-yl)benzamide	3,4-dimethyl-N-[(2Z)-5-(tetrahydrofuran-2-yl)-1,3,4-thiadiazol-2(3H)-ylidene]-2-(1H-tetrazol-1-yl)benzamide	分子量：371.4 密度：N/A 沸点：N/A 熔点：N/A	1310946-63-4	C₁₆H₁₇N₇O₂S
N-(bicyclo[2.2.1]hept-5-en-2-ylmethyl)-1-(1,1-dioxidotetrahydrothiophen-3-yl)-6-oxo-1,4,5,6-tetrahydropyridazine-3-carboxamide	N-(bicyclo[2.2.1]hept-5-en-2-ylmethyl)-1-(1,1-dioxidotetrahydrothiophen-3-yl)-6-oxo-1,4,5,6-tetrahydropyridazine-3-carboxamide	分子量：365.4 密度：N/A 沸点：N/A 熔点：N/A	1324076-87-0	C₁₇H₂₃N₃O₄S
N-{3-[(4-fluorophenyl)carbamoyl]phenyl}-4-phenylpiperazine-1-carboxamide	N-{3-[(4-fluorophenyl)carbamoyl]phenyl}-4-phenylpiperazine-1-carboxamide	分子量：418.5 密度：N/A 沸点：N/A 熔点：N/A	1324093-67-5	C₂₄H₂₃FN₄O₂
N-[2-(3,4-dimethoxyphenyl)ethyl]-3-(5-methyl-1H-tetrazol-1-yl)benzamide	N-[2-(3,4-dimethoxyphenyl)ethyl]-3-(5-methyl-1H-tetrazol-1-yl)benzamide	分子量：367.4 密度：N/A 沸点：N/A 熔点：N/A	1324088-75-6	C₁₉H₂₁N₅O₃
4-[4-(4-fluorophenyl)piperazin-1-yl]-N-[2-(1H-indol-1-yl)ethyl]-4-oxobutanamide	4-[4-(4-fluorophenyl)piperazin-1-yl]-N-[2-(1H-indol-1-yl)ethyl]-4-oxobutanamide	分子量：422.5 密度：N/A 沸点：N/A 熔点：N/A	1324068-65-6	C₂₄H₂₇FN₄O₂
2-[6-oxo-3-(thiomorpholin-4-yl)pyridazin-1(6H)-yl]-N-phenylacetamide	2-[6-oxo-3-(thiomorpholin-4-yl)pyridazin-1(6H)-yl]-N-phenylacetamide	分子量：330.4 密度：N/A 沸点：N/A 熔点：N/A	1324087-81-1	C₁₆H₁₈N₄O₂S
N-[2-(4-methoxyphenyl)ethyl]-3-(5-methyl-1H-tetrazol-1-yl)benzamide	N-[2-(4-methoxyphenyl)ethyl]-3-(5-methyl-1H-tetrazol-1-yl)benzamide	分子量：337.4 密度：N/A 沸点：N/A 熔点：N/A	1324075-84-4	C₁₈H₁₉N₅O₂
2-(2-((4-Hydroxypyridin-3-yl)amino)-2-oxoethyl)benzoic acid	2-(2-((4-Hydroxypyridin-3-yl)amino)-2-oxoethyl)benzoic acid	分子量：272.26 密度：N/A 沸点：N/A 熔点：N/A	1324062-61-4	C₁₄H₁₂N₂O₄
N-benzyl-3-[6-(3,5-dimethyl-1H-pyrazol-1-yl)[1,2,4]triazolo[4,3-b]pyridazin-3-yl]propanamide	N-benzyl-3-[6-(3,5-dimethyl-1H-pyrazol-1-yl)[1,2,4]triazolo[4,3-b]pyridazin-3-yl]propanamide	分子量：375.4 密度：N/A 沸点：N/A 熔点：N/A	1324059-79-1	C₂₀H₂₁N₇O
4-(1,3-benzothiazol-2-yl)-N-[(2E)-5-(tetrahydrofuran-2-yl)-1,3,4-thiadiazol-2(3H)-ylidene]butanamide	4-(1,3-benzothiazol-2-yl)-N-[(2E)-5-(tetrahydrofuran-2-yl)-1,3,4-thiadiazol-2(3H)-ylidene]butanamide	分子量：374.5 密度：N/A 沸点：N/A 熔点：N/A	1324081-56-2	C₁₇H₁₈N₄O₂S₂
2-(5-bromo-1H-indol-1-yl)-N-[(1-ethylpyrrolidin-2-yl)methyl]acetamide	2-(5-bromo-1H-indol-1-yl)-N-[(1-ethylpyrrolidin-2-yl)methyl]acetamide	分子量：364.3 密度：N/A 沸点：N/A 熔点：N/A	1324095-02-4	C₁₇H₂₂BrN₃O
Ethyl 2-({[1-(2,4-dimethoxyphenyl)-5-oxopyrrolidin-3-yl]carbonyl}amino)-1,3-thiazole-4-carboxylate	Ethyl 2-({[1-(2,4-dimethoxyphenyl)-5-oxopyrrolidin-3-yl]carbonyl}amino)-1,3-thiazole-4-carboxylate	分子量：419.5 密度：N/A 沸点：N/A 熔点：N/A	1310945-89-1	C₁₉H₂₁N₃O₆S
N-[2-oxo-2-(1H-1,2,4-triazol-3-ylamino)ethyl]-4-phenylpiperazine-1-carboxamide	N-[2-oxo-2-(1H-1,2,4-triazol-3-ylamino)ethyl]-4-phenylpiperazine-1-carboxamide	分子量：329.36 密度：N/A 沸点：N/A 熔点：N/A	1324056-01-0	C₁₅H₁₉N₇O₂
4-chloro-3-(1,1-dioxido-1,2-thiazinan-2-yl)-N-[(2E)-5-(propan-2-yl)-1,3,4-thiadiazol-2(3H)-ylidene]benzamide	4-chloro-3-(1,1-dioxido-1,2-thiazinan-2-yl)-N-[(2E)-5-(propan-2-yl)-1,3,4-thiadiazol-2(3H)-ylidene]benzamide	分子量：414.9 密度：N/A 沸点：N/A 熔点：N/A	1310946-68-9	C₁₆H₁₉ClN₄O₃S₂
N-[2-(2-methoxyphenyl)ethyl]-2-(3-oxo-5,6,7,8-tetrahydrocinnolin-2(3H)-yl)acetamide	N-[2-(2-methoxyphenyl)ethyl]-2-(3-oxo-5,6,7,8-tetrahydrocinnolin-2(3H)-yl)acetamide	分子量：341.4 密度：N/A 沸点：N/A 熔点：N/A	1310941-33-3	C₁₉H₂₃N₃O₃
3-[6-(3,5-dimethyl-1H-pyrazol-1-yl)[1,2,4]triazolo[4,3-b]pyridazin-3-yl]-N-(3,4,5-trifluorophenyl)propanamide	3-[6-(3,5-dimethyl-1H-pyrazol-1-yl)[1,2,4]triazolo[4,3-b]pyridazin-3-yl]-N-(3,4,5-trifluorophenyl)propanamide	分子量：415.4 密度：N/A 沸点：N/A 熔点：N/A	1324085-38-2	C₁₉H₁₆F₃N₇O
2-[3-(3-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]-N-[(2Z)-4-(pyridin-3-yl)-1,3-thiazol-2(3H)-ylidene]acetamide	2-[3-(3-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]-N-[(2Z)-4-(pyridin-3-yl)-1,3-thiazol-2(3H)-ylidene]acetamide	分子量：419.5 密度：N/A 沸点：N/A 熔点：N/A	1310945-70-0	C₂₁H₁₇N₅O₃S
N-{3-[(furan-2-ylmethyl)carbamoyl]phenyl}-4-phenylpiperazine-1-carboxamide	N-{3-[(furan-2-ylmethyl)carbamoyl]phenyl}-4-phenylpiperazine-1-carboxamide	分子量：404.5 密度：N/A 沸点：N/A 熔点：N/A	1324055-18-6	C₂₃H₂₄N₄O₃
N-(2-methylpropyl)-4-(5-methyl-1H-tetrazol-1-yl)benzamide	N-(2-methylpropyl)-4-(5-methyl-1H-tetrazol-1-yl)benzamide	分子量：259.31 密度：N/A 沸点：N/A 熔点：N/A	1324074-99-8	C₁₃H₁₇N₅O
4-chloro-3-(1,1-dioxido-1,2-thiazinan-2-yl)-N-(6-methoxypyridin-3-yl)benzamide	4-chloro-3-(1,1-dioxido-1,2-thiazinan-2-yl)-N-(6-methoxypyridin-3-yl)benzamide	分子量：395.9 密度：N/A 沸点：N/A 熔点：N/A	1216960-54-1	C₁₇H₁₈ClN₃O₄S
2-(3-(4-(3-chlorophenyl)piperazin-1-yl)-6-oxopyridazin-1(6H)-yl)-N-(pyridin-4-yl)acetamide	2-(3-(4-(3-chlorophenyl)piperazin-1-yl)-6-oxopyridazin-1(6H)-yl)-N-(pyridin-4-yl)acetamide	分子量：424.9 密度：N/A 沸点：N/A 熔点：N/A	1324078-42-3	C₂₁H₂₁ClN₆O₂
1-cyclopentyl-N-[2-(3,4-dimethoxyphenyl)ethyl]-6-methyl-1H-pyrazolo[3,4-b]pyridine-4-carboxamide	1-cyclopentyl-N-[2-(3,4-dimethoxyphenyl)ethyl]-6-methyl-1H-pyrazolo[3,4-b]pyridine-4-carboxamide	分子量：408.5 密度：N/A 沸点：N/A 熔点：N/A	1324095-83-1	C₂₃H₂₈N₄O₃
4-(5-methyl-1H-tetrazol-1-yl)-N-(propan-2-yl)benzamide	4-(5-methyl-1H-tetrazol-1-yl)-N-(propan-2-yl)benzamide	分子量：245.28 密度：N/A 沸点：N/A 熔点：N/A	1324097-16-6	C₁₂H₁₅N₅O
N-[3-(1,1-dioxido-1,2-thiazinan-2-yl)phenyl]-4-methyl-2-(1H-pyrrol-1-yl)-1,3-thiazole-5-carboxamide	N-[3-(1,1-dioxido-1,2-thiazinan-2-yl)phenyl]-4-methyl-2-(1H-pyrrol-1-yl)-1,3-thiazole-5-carboxamide	分子量：416.5 密度：N/A 沸点：N/A 熔点：N/A	1324085-56-4	C₁₉H₂₀N₄O₃S₂
2-[3-(3,4-dimethoxyphenyl)-6-oxopyridazin-1(6H)-yl]-N-[(2Z)-4-(pyridin-3-yl)-1,3-thiazol-2(3H)-ylidene]acetamide	2-[3-(3,4-dimethoxyphenyl)-6-oxopyridazin-1(6H)-yl]-N-[(2Z)-4-(pyridin-3-yl)-1,3-thiazol-2(3H)-ylidene]acetamide	分子量：449.5 密度：N/A 沸点：N/A 熔点：N/A	1310946-07-6	C₂₂H₁₉N₅O₄S
N-{[3-(2-chlorophenyl)-6-oxopyridazin-1(6H)-yl]acetyl}-beta-alanine	N-{[3-(2-chlorophenyl)-6-oxopyridazin-1(6H)-yl]acetyl}-beta-alanine	分子量：335.74 密度：N/A 沸点：N/A 熔点：N/A	1324078-30-9	C₁₅H₁₄ClN₃O₄
N-[2-(5-chloro-1H-indol-3-yl)ethyl]-2-[3-(2-chlorophenyl)-6-oxopyridazin-1(6H)-yl]acetamide	N-[2-(5-chloro-1H-indol-3-yl)ethyl]-2-[3-(2-chlorophenyl)-6-oxopyridazin-1(6H)-yl]acetamide	分子量：441.3 密度：N/A 沸点：N/A 熔点：N/A	1324085-21-3	C₂₂H₁₈Cl₂N₄O₂
1-cyclopentyl-6-methyl-N-(2-methylpropyl)-1H-pyrazolo[3,4-b]pyridine-4-carboxamide	1-cyclopentyl-6-methyl-N-(2-methylpropyl)-1H-pyrazolo[3,4-b]pyridine-4-carboxamide	分子量：300.4 密度：N/A 沸点：N/A 熔点：N/A	1324094-05-4	C₁₇H₂₄N₄O
2-[3-(2-chlorophenyl)-6-oxopyridazin-1(6H)-yl]-N-[(2E)-5-(methoxymethyl)-1,3,4-thiadiazol-2(3H)-ylidene]acetamide	2-[3-(2-chlorophenyl)-6-oxopyridazin-1(6H)-yl]-N-[(2E)-5-(methoxymethyl)-1,3,4-thiadiazol-2(3H)-ylidene]acetamide	分子量：391.8 密度：N/A 沸点：N/A 熔点：N/A	1324098-39-6	C₁₆H₁₄ClN₅O₃S
Methyl 3-(cyanomethyl)-4-fluorobenzoate	Methyl 3-(cyanomethyl)-4-fluorobenzoate	分子量：193.17 密度：N/A 沸点：N/A 熔点：N/A	878741-80-1	C₁₀H₈FNO₂
N-[3-(1,1-dioxido-1,2-thiazinan-2-yl)phenyl]-1-methyl-1H-indole-6-carboxamide	N-[3-(1,1-dioxido-1,2-thiazinan-2-yl)phenyl]-1-methyl-1H-indole-6-carboxamide	分子量：383.5 密度：N/A 沸点：N/A 熔点：N/A	1324069-89-7	C₂₀H₂₁N₃O₃S
3-(1,3-benzothiazol-2-yl)-N-(3,4,5-trifluorophenyl)propanamide	3-(1,3-benzothiazol-2-yl)-N-(3,4,5-trifluorophenyl)propanamide	分子量：336.3 密度：N/A 沸点：N/A 熔点：N/A	1324059-51-9	C₁₆H₁₁F₃N₂OS
2'-(sec-butyl)-1'-oxo-N-(1,3,4-thiadiazol-2-yl)-2',4'-dihydro-1'H-spiro[cyclopentane-1,3'-isoquinoline]-4'-carboxamide	2'-(sec-butyl)-1'-oxo-N-(1,3,4-thiadiazol-2-yl)-2',4'-dihydro-1'H-spiro[cyclopentane-1,3'-isoquinoline]-4'-carboxamide	分子量：384.5 密度：N/A 沸点：N/A 熔点：N/A	1310946-34-9	C₂₀H₂₄N₄O₂S
6-({[3-(2-chlorophenyl)-6-oxopyridazin-1(6H)-yl]acetyl}amino)hexanoic acid	6-({[3-(2-chlorophenyl)-6-oxopyridazin-1(6H)-yl]acetyl}amino)hexanoic acid	分子量：377.8 密度：N/A 沸点：N/A 熔点：N/A	1324078-03-6	C₁₈H₂₀ClN₃O₄
2-[3-(4-fluoro-2-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]-N-[(2Z)-4-(pyridin-3-yl)-1,3-thiazol-2(3H)-ylidene]acetamide	2-[3-(4-fluoro-2-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]-N-[(2Z)-4-(pyridin-3-yl)-1,3-thiazol-2(3H)-ylidene]acetamide	分子量：437.4 密度：N/A 沸点：N/A 熔点：N/A	1310945-98-2	C₂₁H₁₆FN₅O₃S
[1-(Diphenylmethyl)azetidin-3-yl](thiomorpholin-4-yl)methanone	[1-(Diphenylmethyl)azetidin-3-yl](thiomorpholin-4-yl)methanone	分子量：352.5 密度：N/A 沸点：N/A 熔点：N/A	1324077-59-9	C₂₁H₂₄N₂OS
2-[3-(2-chlorophenyl)-6-oxopyridazin-1(6H)-yl]-N-(3,4,5-trimethoxyphenyl)acetamide	2-[3-(2-chlorophenyl)-6-oxopyridazin-1(6H)-yl]-N-(3,4,5-trimethoxyphenyl)acetamide	分子量：429.9 密度：N/A 沸点：N/A 熔点：N/A	1324087-36-6	C₂₁H₂₀ClN₃O₅
1-benzhydryl-N~3~-(3,4-dimethoxyphenethyl)-3-azetanecarboxamide	1-benzhydryl-N~3~-(3,4-dimethoxyphenethyl)-3-azetanecarboxamide	分子量：430.5 密度：N/A 沸点：N/A 熔点：N/A	1324093-81-3	C₂₇H₃₀N₂O₃
4-chloro-3-(1,1-dioxido-1,2-thiazinan-2-yl)-N-[(2Z)-4-(pyridin-2-yl)-1,3-thiazol-2(3H)-ylidene]benzamide	4-chloro-3-(1,1-dioxido-1,2-thiazinan-2-yl)-N-[(2Z)-4-(pyridin-2-yl)-1,3-thiazol-2(3H)-ylidene]benzamide	分子量：448.9 密度：N/A 沸点：N/A 熔点：N/A	1310946-17-8	C₁₉H₁₇ClN₄O₃S₂
3,4-dimethyl-N-(5-methyl-1,3,4-thiadiazol-2-yl)-2-(1H-tetrazol-1-yl)benzamide	3,4-dimethyl-N-(5-methyl-1,3,4-thiadiazol-2-yl)-2-(1H-tetrazol-1-yl)benzamide	分子量：315.36 密度：N/A 沸点：N/A 熔点：N/A	1324097-03-1	C₁₃H₁₃N₇OS
N-(1H-indol-5-yl)-1,3,6-trimethyl-1H-pyrazolo[3,4-b]pyridine-4-carboxamide	N-(1H-indol-5-yl)-1,3,6-trimethyl-1H-pyrazolo[3,4-b]pyridine-4-carboxamide	分子量：319.4 密度：N/A 沸点：N/A 熔点：N/A	1324058-06-1	C₁₈H₁₇N₅O
[4-(4-Chlorophenyl)piperazino](3,6-dimethylisoxazolo[5,4-b]pyridin-4-yl)methanone	[4-(4-Chlorophenyl)piperazino](3,6-dimethylisoxazolo[5,4-b]pyridin-4-yl)methanone	分子量：370.8 密度：N/A 沸点：N/A 熔点：N/A	1299107-49-5	C₁₉H₁₉ClN₄O₂
2-(1,1-dioxidotetrahydrothiophen-3-yl)-6-(thiomorpholin-4-ylcarbonyl)-4,5-dihydropyridazin-3(2H)-one	2-(1,1-dioxidotetrahydrothiophen-3-yl)-6-(thiomorpholin-4-ylcarbonyl)-4,5-dihydropyridazin-3(2H)-one	分子量：345.4 密度：N/A 沸点：N/A 熔点：N/A	1324062-91-0	C₁₃H₁₉N₃O₄S₂
N-{2-oxo-2-[(2-phenylethyl)amino]ethyl}-4-phenylpiperazine-1-carboxamide	N-{2-oxo-2-[(2-phenylethyl)amino]ethyl}-4-phenylpiperazine-1-carboxamide	分子量：366.5 密度：N/A 沸点：N/A 熔点：N/A	1324089-95-3	C₂₁H₂₆N₄O₂
2-{3-[4-(methylsulfanyl)phenyl]-6-oxopyridazin-1(6H)-yl}-N-(1,3-thiazol-2-yl)acetamide	2-{3-[4-(methylsulfanyl)phenyl]-6-oxopyridazin-1(6H)-yl}-N-(1,3-thiazol-2-yl)acetamide	分子量：358.4 密度：N/A 沸点：N/A 熔点：N/A	1324095-14-8	C₁₆H₁₄N₄O₂S₂
4-phenyl-N-[4-(propan-2-ylcarbamoyl)phenyl]piperazine-1-carboxamide	4-phenyl-N-[4-(propan-2-ylcarbamoyl)phenyl]piperazine-1-carboxamide	分子量：366.5 密度：N/A 沸点：N/A 熔点：N/A	1324073-49-5	C₂₁H₂₆N₄O₂
N-[2-(6-chloro-1H-indol-1-yl)ethyl]-2-[3-(4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetamide	N-[2-(6-chloro-1H-indol-1-yl)ethyl]-2-[3-(4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetamide	分子量：436.9 密度：N/A 沸点：N/A 熔点：N/A	1324096-73-2	C₂₃H₂₁ClN₄O₃