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
Methyl 2-methyl-5-(pyridin-4-yl)-1H-pyrrole-3-carboxylate	Methyl 2-methyl-5-(pyridin-4-yl)-1H-pyrrole-3-carboxylate	分子量：216.24 密度：N/A 沸点：N/A 熔点：N/A	1248540-97-7	C₁₂H₁₂N₂O₂
[2-[5-(1,4-oxazepane-4-carbonyl)thiophen-2-yl]pyrrolidin-1-yl]-(1H-pyrazol-5-yl)methanone	[2-[5-(1,4-oxazepane-4-carbonyl)thiophen-2-yl]pyrrolidin-1-yl]-(1H-pyrazol-5-yl)methanone	分子量：374.5 密度：N/A 沸点：N/A 熔点：N/A	1185699-02-8	C₁₈H₂₂N₄O₃S
N-(6-Bromo-2-benzothiazolyl)-2-[4-(1-methylethyl)phenoxy]-N-[3-(4-morpholinyl)propyl]acetamide	N-(6-Bromo-2-benzothiazolyl)-2-[4-(1-methylethyl)phenoxy]-N-[3-(4-morpholinyl)propyl]acetamide	分子量：532.5 密度：N/A 沸点：N/A 熔点：N/A	1172760-61-0	C₂₅H₃₀BrN₃O₃S
N-[2-(4-methoxyphenoxy)ethyl]-2-(2-methylphenoxy)acetamide	N-[2-(4-methoxyphenoxy)ethyl]-2-(2-methylphenoxy)acetamide	分子量：315.4 密度：N/A 沸点：N/A 熔点：N/A	1090664-05-3	C₁₈H₂₁NO₄
2-[[5-(2-Chlorophenyl)-4-methyl-4H-1,2,4-triazol-3-yl]thio]-N-[2-(phenylthio)phenyl]acetamide	2-[[5-(2-Chlorophenyl)-4-methyl-4H-1,2,4-triazol-3-yl]thio]-N-[2-(phenylthio)phenyl]acetamide	分子量：467.0 密度：N/A 沸点：N/A 熔点：N/A	1209646-18-3	C₂₃H₁₉ClN₄OS₂
4-[(2-Methyl-8-quinolinyl)oxy]butanoic acid	4-[(2-Methyl-8-quinolinyl)oxy]butanoic acid	分子量：245.27 密度：N/A 沸点：N/A 熔点：N/A	1099046-09-9	C₁₄H₁₅NO₃
6-Fluoro-2-methylquinoline-4-thiol	6-Fluoro-2-methylquinoline-4-thiol	分子量：193.24 密度：N/A 沸点：N/A 熔点：N/A	15912-64-8	C₁₀H₈FNS
[(4-Propoxyphenyl)sulfonyl]-2-pyridylamine	[(4-Propoxyphenyl)sulfonyl]-2-pyridylamine	分子量：292.36 密度：N/A 沸点：N/A 熔点：N/A	1206106-30-0	C₁₄H₁₆N₂O₃S
4-{[(1-Cyano-1,2-dimethylpropyl)carbamoyl]methyl}-N,N-diethylpiperazine-1-carboxamide	4-{[(1-Cyano-1,2-dimethylpropyl)carbamoyl]methyl}-N,N-diethylpiperazine-1-carboxamide	分子量：337.5 密度：N/A 沸点：N/A 熔点：N/A	1223728-06-0	C₁₇H₃₁N₅O₂
1-({1-[4-Chloro-3-(trifluoromethyl)phenyl]-5-oxopyrrolidin-3-yl}carbonyl)piperidine-4-carboxamide	1-({1-[4-Chloro-3-(trifluoromethyl)phenyl]-5-oxopyrrolidin-3-yl}carbonyl)piperidine-4-carboxamide	分子量：417.8 密度：N/A 沸点：N/A 熔点：N/A	1144464-00-5	C₁₈H₁₉ClF₃N₃O₃
3-(5-Chlorofuran-2-yl)-4-(4-fluorophenyl)-5-methylisoxazole	3-(5-Chlorofuran-2-yl)-4-(4-fluorophenyl)-5-methylisoxazole	分子量：277.68 密度：N/A 沸点：N/A 熔点：N/A	1171190-59-2	C₁₄H₉ClFNO₂
2-Methoxy-4-(propane-1-sulfonamido)benzene-1-sulfonamide	2-Methoxy-4-(propane-1-sulfonamido)benzene-1-sulfonamide	分子量：308.4 密度：N/A 沸点：N/A 熔点：N/A	1094645-33-6	C₁₀H₁₆N₂O₅S₂
2-[[4-[5-[6-(6-methylpyridin-2-yl)-1H-pyrrolo[2,3-b]pyridin-4-yl]pyridin-3-yl]phenyl]methylamino]ethanol	2-[[4-[5-[6-(6-methylpyridin-2-yl)-1H-pyrrolo[2,3-b]pyridin-4-yl]pyridin-3-yl]phenyl]methylamino]ethanol	分子量：435.5 密度：N/A 沸点：N/A 熔点：N/A	1171895-77-4	C₂₇H₂₅N₅O
5-Fluoro-3-phenylpyridin-2-amine	5-Fluoro-3-phenylpyridin-2-amine	分子量：188.20 密度：N/A 沸点：N/A 熔点：N/A	1214331-56-2	C₁₁H₉FN₂
2-(1,5,5-Trimethylcyclopent-2-en-1-yl)ethyl acetate	2-(1,5,5-Trimethylcyclopent-2-en-1-yl)ethyl acetate	分子量：196.29 密度：N/A 沸点：N/A 熔点：N/A	1160363-49-4	C₁₂H₂₀O₂
1-Ethyl-N-(3-methylcyclohexyl)-1H-pyrazol-4-amine	1-Ethyl-N-(3-methylcyclohexyl)-1H-pyrazol-4-amine	分子量：207.32 密度：N/A 沸点：N/A 熔点：N/A	1155577-85-7	C₁₂H₂₁N₃
3-(4-Chlorophenyl)-4,5-dihydroisoxazole-5-carbonitrile	3-(4-Chlorophenyl)-4,5-dihydroisoxazole-5-carbonitrile	分子量：206.63 密度：N/A 沸点：N/A 熔点：N/A	1173119-75-9	C₁₀H₇ClN₂O
2-Methyl-4-(2-oxoindoline-3-yl)-5-(4-chlorophenyl)-1H-pyrrole-3-carboxylic acid methyl ester	2-Methyl-4-(2-oxoindoline-3-yl)-5-(4-chlorophenyl)-1H-pyrrole-3-carboxylic acid methyl ester	分子量：380.8 密度：N/A 沸点：N/A 熔点：N/A	1173173-74-4	C₂₁H₁₇ClN₂O₃
2-[(4-Fluorophenoxy)methyl]piperidine hydrochloride	2-[(4-Fluorophenoxy)methyl]piperidine hydrochloride	分子量：245.72 密度：N/A 沸点：N/A 熔点：N/A	1201633-73-9	C₁₂H₁₇ClFNO
4-((2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)thio)butanoic acid	4-((2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)thio)butanoic acid	分子量：254.30 密度：N/A 沸点：N/A 熔点：N/A	1098376-16-9	C₁₂H₁₄O₄S
1-((5-chlorothiophen-2-yl)sulfonyl)-N-(1-ethyl-2-oxo-1,2-dihydrobenzo[cd]indol-6-yl)pyrrolidine-2-carboxamide	1-((5-chlorothiophen-2-yl)sulfonyl)-N-(1-ethyl-2-oxo-1,2-dihydrobenzo[cd]indol-6-yl)pyrrolidine-2-carboxamide	分子量：490.0 密度：N/A 沸点：N/A 熔点：N/A	1101178-56-6	C₂₂H₂₀ClN₃O₄S₂
N-(4-bromophenyl)-1-((5-chlorothiophen-2-yl)sulfonyl)pyrrolidine-2-carboxamide	N-(4-bromophenyl)-1-((5-chlorothiophen-2-yl)sulfonyl)pyrrolidine-2-carboxamide	分子量：449.8 密度：N/A 沸点：N/A 熔点：N/A	1101179-05-8	C₁₅H₁₄BrClN₂O₃S₂
1-((5-chlorothiophen-2-yl)sulfonyl)-N-(2,5-dichlorophenyl)pyrrolidine-2-carboxamide	1-((5-chlorothiophen-2-yl)sulfonyl)-N-(2,5-dichlorophenyl)pyrrolidine-2-carboxamide	分子量：439.8 密度：N/A 沸点：N/A 熔点：N/A	1097833-77-6	C₁₅H₁₃Cl₃N₂O₃S₂
(E)-1-((5-chlorothiophen-2-yl)sulfonyl)-N-(4-(phenyldiazenyl)phenyl)pyrrolidine-2-carboxamide	(E)-1-((5-chlorothiophen-2-yl)sulfonyl)-N-(4-(phenyldiazenyl)phenyl)pyrrolidine-2-carboxamide	分子量：475.0 密度：N/A 沸点：N/A 熔点：N/A	1101179-07-0	C₂₁H₁₉ClN₄O₃S₂
1-((5-chlorothiophen-2-yl)sulfonyl)-N-(2,3-dichlorophenyl)pyrrolidine-2-carboxamide	1-((5-chlorothiophen-2-yl)sulfonyl)-N-(2,3-dichlorophenyl)pyrrolidine-2-carboxamide	分子量：439.8 密度：N/A 沸点：N/A 熔点：N/A	1101179-10-5	C₁₅H₁₃Cl₃N₂O₃S₂
(E)-1-((5-chlorothiophen-2-yl)sulfonyl)-N-(3-(2-ethoxyethyl)-4-fluorobenzo[d]thiazol-2(3H)-ylidene)pyrrolidine-2-carboxamide	(E)-1-((5-chlorothiophen-2-yl)sulfonyl)-N-(3-(2-ethoxyethyl)-4-fluorobenzo[d]thiazol-2(3H)-ylidene)pyrrolidine-2-carboxamide	分子量：518.1 密度：N/A 沸点：N/A 熔点：N/A	1101180-22-6	C₂₀H₂₁ClFN₃O₄S₃
(E)-1-((5-chlorothiophen-2-yl)sulfonyl)-N-(6-fluoro-3-(prop-2-yn-1-yl)benzo[d]thiazol-2(3H)-ylidene)pyrrolidine-2-carboxamide	(E)-1-((5-chlorothiophen-2-yl)sulfonyl)-N-(6-fluoro-3-(prop-2-yn-1-yl)benzo[d]thiazol-2(3H)-ylidene)pyrrolidine-2-carboxamide	分子量：484.0 密度：N/A 沸点：N/A 熔点：N/A	1100755-77-8	C₁₉H₁₅ClFN₃O₃S₃
(E)-1-((5-chlorothiophen-2-yl)sulfonyl)-N-(4,6-difluoro-3-(prop-2-yn-1-yl)benzo[d]thiazol-2(3H)-ylidene)pyrrolidine-2-carboxamide	(E)-1-((5-chlorothiophen-2-yl)sulfonyl)-N-(4,6-difluoro-3-(prop-2-yn-1-yl)benzo[d]thiazol-2(3H)-ylidene)pyrrolidine-2-carboxamide	分子量：502.0 密度：N/A 沸点：N/A 熔点：N/A	1101186-43-9	C₁₉H₁₄ClF₂N₃O₃S₃
Ethyl 2-{[5-(2-chloroacetamido)-1,3,4-thiadiazol-2-yl]sulfanyl}acetate	Ethyl 2-{[5-(2-chloroacetamido)-1,3,4-thiadiazol-2-yl]sulfanyl}acetate	分子量：295.8 密度：N/A 沸点：N/A 熔点：N/A	1173045-81-2	C₈H₁₀ClN₃O₃S₂
(E)-1-((5-chlorothiophen-2-yl)sulfonyl)-N-(7-(prop-2-yn-1-yl)-[1,3]dioxolo[4',5':4,5]benzo[1,2-d]thiazol-6(7H)-ylidene)piperidine-4-carboxamide	(E)-1-((5-chlorothiophen-2-yl)sulfonyl)-N-(7-(prop-2-yn-1-yl)-[1,3]dioxolo[4',5':4,5]benzo[1,2-d]thiazol-6(7H)-ylidene)piperidine-4-carboxamide	分子量：524.0 密度：N/A 沸点：N/A 熔点：N/A	946244-70-8	C₂₁H₁₈ClN₃O₅S₃
N-(3-(benzo[d]thiazol-2-yl)-6-methyl-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)-2-(4-fluorophenyl)acetamide	N-(3-(benzo[d]thiazol-2-yl)-6-methyl-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)-2-(4-fluorophenyl)acetamide	分子量：436.6 密度：N/A 沸点：N/A 熔点：N/A	922700-60-5	C₂₄H₂₁FN₂OS₂
ethyl 2-methyl-5-(2-oxo-2-(((tetrahydrofuran-2-yl)methyl)amino)acetyl)-4-phenyl-1H-pyrrole-3-carboxylate	ethyl 2-methyl-5-(2-oxo-2-(((tetrahydrofuran-2-yl)methyl)amino)acetyl)-4-phenyl-1H-pyrrole-3-carboxylate	分子量：384.4 密度：N/A 沸点：N/A 熔点：N/A	1009055-10-0	C₂₁H₂₄N₂O₅
ethyl 2-methyl-5-(2-oxo-2-((1-phenylethyl)amino)acetyl)-4-phenyl-1H-pyrrole-3-carboxylate	ethyl 2-methyl-5-(2-oxo-2-((1-phenylethyl)amino)acetyl)-4-phenyl-1H-pyrrole-3-carboxylate	分子量：404.5 密度：N/A 沸点：N/A 熔点：N/A	1008388-57-5	C₂₄H₂₄N₂O₄
2-(3-(3-bromophenyl)-6-oxopyridazin-1(6H)-yl)-N-((tetrahydrofuran-2-yl)methyl)acetamide	2-(3-(3-bromophenyl)-6-oxopyridazin-1(6H)-yl)-N-((tetrahydrofuran-2-yl)methyl)acetamide	分子量：392.2 密度：N/A 沸点：N/A 熔点：N/A	922901-94-8	C₁₇H₁₈BrN₃O₃
2-(3-(3,4-dimethoxyphenyl)-6-oxopyridazin-1(6H)-yl)-N-phenylacetamide	2-(3-(3,4-dimethoxyphenyl)-6-oxopyridazin-1(6H)-yl)-N-phenylacetamide	分子量：365.4 密度：N/A 沸点：N/A 熔点：N/A	922902-91-8	C₂₀H₁₉N₃O₄
2-(3-(4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl)-N-phenylacetamide	2-(3-(4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl)-N-phenylacetamide	分子量：335.4 密度：N/A 沸点：N/A 熔点：N/A	922973-32-8	C₁₉H₁₇N₃O₃
2-[3-(4-methylphenyl)-6-oxopyridazin-1(6H)-yl]-N-phenylacetamide	2-[3-(4-methylphenyl)-6-oxopyridazin-1(6H)-yl]-N-phenylacetamide	分子量：319.4 密度：N/A 沸点：N/A 熔点：N/A	922863-43-2	C₁₉H₁₇N₃O₂
2-(6-oxo-3-(2,4,5-trimethylphenyl)pyridazin-1(6H)-yl)-N-((tetrahydrofuran-2-yl)methyl)acetamide	2-(6-oxo-3-(2,4,5-trimethylphenyl)pyridazin-1(6H)-yl)-N-((tetrahydrofuran-2-yl)methyl)acetamide	分子量：355.4 密度：N/A 沸点：N/A 熔点：N/A	922916-69-6	C₂₀H₂₅N₃O₃
methyl 2-(3-(4-bromophenyl)-6-oxo-1(6H)-pyridazinyl)butanoate	methyl 2-(3-(4-bromophenyl)-6-oxo-1(6H)-pyridazinyl)butanoate	分子量：351.19 密度：N/A 沸点：N/A 熔点：N/A	853333-96-7	C₁₅H₁₅BrN₂O₃
Ethyl 2-(3,4-difluorobenzamido)benzo[b]thiophene-3-carboxylate	Ethyl 2-(3,4-difluorobenzamido)benzo[b]thiophene-3-carboxylate	分子量：361.4 密度：N/A 沸点：N/A 熔点：N/A	1171843-98-3	C₁₈H₁₃F₂NO₃S
Ethyl 2-(2-(2-methoxyphenoxy)acetamido)benzo[b]thiophene-3-carboxylate	Ethyl 2-(2-(2-methoxyphenoxy)acetamido)benzo[b]thiophene-3-carboxylate	分子量：385.4 密度：N/A 沸点：N/A 熔点：N/A	1170373-73-5	C₂₀H₁₉NO₅S
1-Cyclohexyl-3-[4-methoxy-3-(2-oxopyrrolidin-1-yl)phenyl]urea	1-Cyclohexyl-3-[4-methoxy-3-(2-oxopyrrolidin-1-yl)phenyl]urea	分子量：331.4 密度：N/A 沸点：N/A 熔点：N/A	922977-81-9	C₁₈H₂₅N₃O₃
N1-[(3,4-dimethoxyphenyl)methyl]benzene-1,2-diamine	N1-[(3,4-dimethoxyphenyl)methyl]benzene-1,2-diamine	分子量：258.32 密度：N/A 沸点：N/A 熔点：N/A	5729-20-4	C₁₅H₁₈N₂O₂
(3-endo)-3-(3-Pyridinylsulfonyl)-N-[4-(trifluoromethyl)phenyl]-8-azabicyclo[3.2.1]octane-8-carboxamide	(3-endo)-3-(3-Pyridinylsulfonyl)-N-[4-(trifluoromethyl)phenyl]-8-azabicyclo[3.2.1]octane-8-carboxamide	分子量：439.5 密度：N/A 沸点：N/A 熔点：N/A	1170321-93-3	C₂₀H₂₀F₃N₃O₃S
3-(Phenylsulfonyl)-N-[4-(trifluoromethyl)phenyl]piperidine-1-carboxamide	3-(Phenylsulfonyl)-N-[4-(trifluoromethyl)phenyl]piperidine-1-carboxamide	分子量：412.4 密度：N/A 沸点：N/A 熔点：N/A	1170321-85-3	C₁₉H₁₉F₃N₂O₃S
4-Fluoro-2-[[2-methoxy-1-(methoxymethyl)ethyl]amino]benzonitrile	4-Fluoro-2-[[2-methoxy-1-(methoxymethyl)ethyl]amino]benzonitrile	分子量：238.26 密度：N/A 沸点：N/A 熔点：N/A	1173111-75-5	C₁₂H₁₅FN₂O₂
2-amino-N-[(2-fluorophenyl)methyl]-N,4-dimethylpentanamide	2-amino-N-[(2-fluorophenyl)methyl]-N,4-dimethylpentanamide	分子量：252.33 密度：N/A 沸点：N/A 熔点：N/A	1218716-87-0	C₁₄H₂₁FN₂O
7-methoxy-N-(6-methylpyridin-2-yl)benzofuran-2-carboxamide	7-methoxy-N-(6-methylpyridin-2-yl)benzofuran-2-carboxamide	分子量：282.29 密度：N/A 沸点：N/A 熔点：N/A	921570-79-8	C₁₆H₁₄N₂O₃
7-ethoxy-N-(6-methylpyridin-2-yl)benzofuran-2-carboxamide	7-ethoxy-N-(6-methylpyridin-2-yl)benzofuran-2-carboxamide	分子量：296.32 密度：N/A 沸点：N/A 熔点：N/A	921825-41-4	C₁₇H₁₆N₂O₃
N-(6-Fluoro-2-benzothiazolyl)-N-[3-(1H-imidazol-1-yl)propyl]-2-(4-methoxyphenoxy)acetamide	N-(6-Fluoro-2-benzothiazolyl)-N-[3-(1H-imidazol-1-yl)propyl]-2-(4-methoxyphenoxy)acetamide	分子量：440.5 密度：N/A 沸点：N/A 熔点：N/A	1172472-75-1	C₂₂H₂₁FN₄O₃S