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
N-(4-(furan-2-yl)thiazol-2-yl)-2-(2-(pyrazin-2-yl)-1H-benzo[d]imidazol-1-yl)acetamide	N-(4-(furan-2-yl)thiazol-2-yl)-2-(2-(pyrazin-2-yl)-1H-benzo[d]imidazol-1-yl)acetamide	分子量：402.4 密度：N/A 沸点：N/A 熔点：N/A	1203250-92-3	C₂₀H₁₄N₆O₂S
N-(5-(ethylthio)-1,3,4-thiadiazol-2-yl)-2-(2-(pyrazin-2-yl)-1H-benzo[d]imidazol-1-yl)acetamide	N-(5-(ethylthio)-1,3,4-thiadiazol-2-yl)-2-(2-(pyrazin-2-yl)-1H-benzo[d]imidazol-1-yl)acetamide	分子量：397.5 密度：N/A 沸点：N/A 熔点：N/A	1203116-65-7	C₁₇H₁₅N₇OS₂
benzofuran-2-yl(4-((2-methyl-1H-benzo[d]imidazol-1-yl)methyl)piperidin-1-yl)methanone	benzofuran-2-yl(4-((2-methyl-1H-benzo[d]imidazol-1-yl)methyl)piperidin-1-yl)methanone	分子量：373.4 密度：N/A 沸点：N/A 熔点：N/A	1203352-15-1	C₂₃H₂₃N₃O₂
(4-((5,6-dimethyl-1H-benzo[d]imidazol-1-yl)methyl)piperidin-1-yl)(5-(4-methoxyphenyl)isoxazol-3-yl)methanone	(4-((5,6-dimethyl-1H-benzo[d]imidazol-1-yl)methyl)piperidin-1-yl)(5-(4-methoxyphenyl)isoxazol-3-yl)methanone	分子量：444.5 密度：N/A 沸点：N/A 熔点：N/A	1206999-44-1	C₂₆H₂₈N₄O₃
2-(4-(4-((4-Fluorophenyl)amino)-6-methyl-5-nitropyrimidin-2-yl)piperazin-1-yl)ethanol	2-(4-(4-((4-Fluorophenyl)amino)-6-methyl-5-nitropyrimidin-2-yl)piperazin-1-yl)ethanol	分子量：376.4 密度：N/A 沸点：N/A 熔点：N/A	1203248-43-4	C₁₇H₂₁FN₆O₃
2-(benzylthio)-N-(4-ethylbenzo[d]thiazol-2-yl)-N-(pyridin-2-ylmethyl)acetamide	2-(benzylthio)-N-(4-ethylbenzo[d]thiazol-2-yl)-N-(pyridin-2-ylmethyl)acetamide	分子量：433.6 密度：N/A 沸点：N/A 熔点：N/A	923466-33-5	C₂₄H₂₃N₃OS₂
2-(4-acetyl-2-methoxyphenoxy)-N-(1-cyano-1,2-dimethylpropyl)acetamide	2-(4-acetyl-2-methoxyphenoxy)-N-(1-cyano-1,2-dimethylpropyl)acetamide	分子量：318.4 密度：N/A 沸点：N/A 熔点：N/A	1090663-89-0	C₁₇H₂₂N₂O₄
1-((1-((5-methylthiophen-2-yl)sulfonyl)piperidin-4-yl)methyl)-1H-benzo[d]imidazole	1-((1-((5-methylthiophen-2-yl)sulfonyl)piperidin-4-yl)methyl)-1H-benzo[d]imidazole	分子量：375.5 密度：N/A 沸点：N/A 熔点：N/A	1206998-24-4	C₁₈H₂₁N₃O₂S₂
3,5-dimethyl-4-((4-((2-(trifluoromethyl)-1H-benzo[d]imidazol-1-yl)methyl)piperidin-1-yl)sulfonyl)isoxazole	3,5-dimethyl-4-((4-((2-(trifluoromethyl)-1H-benzo[d]imidazol-1-yl)methyl)piperidin-1-yl)sulfonyl)isoxazole	分子量：442.5 密度：N/A 沸点：N/A 熔点：N/A	1203266-65-2	C₁₉H₂₁F₃N₄O₃S
N-(4-methylbenzo[d]thiazol-2-yl)-2-(4-(methylsulfonyl)phenyl)acetamide	N-(4-methylbenzo[d]thiazol-2-yl)-2-(4-(methylsulfonyl)phenyl)acetamide	分子量：360.5 密度：N/A 沸点：N/A 熔点：N/A	919848-58-1	C₁₇H₁₆N₂O₃S₂
2,4-Pyridinedicarbonitrile, 6-(hydroxymethyl)-	2,4-Pyridinedicarbonitrile, 6-(hydroxymethyl)-	分子量：159.14 密度：N/A 沸点：N/A 熔点：N/A	448908-08-5	C₈H₅N₃O
2-chloro-N-(3-((6-methylpyridazin-3-yl)oxy)phenyl)benzamide	2-chloro-N-(3-((6-methylpyridazin-3-yl)oxy)phenyl)benzamide	分子量：339.8 密度：N/A 沸点：N/A 熔点：N/A	1207024-17-6	C₁₈H₁₄ClN₃O₂
2-(4-chlorophenyl)-N-(4-((6-methylpyridazin-3-yl)oxy)phenyl)acetamide	2-(4-chlorophenyl)-N-(4-((6-methylpyridazin-3-yl)oxy)phenyl)acetamide	分子量：353.8 密度：N/A 沸点：N/A 熔点：N/A	1207016-41-8	C₁₉H₁₆ClN₃O₂
2-methyl-N-(6-methylpyridin-2-yl)-2-(6-oxo-3-phenylpyridazin-1(6H)-yl)propanamide	2-methyl-N-(6-methylpyridin-2-yl)-2-(6-oxo-3-phenylpyridazin-1(6H)-yl)propanamide	分子量：348.4 密度：N/A 沸点：N/A 熔点：N/A	1203185-06-1	C₂₀H₂₀N₄O₂
N-(4-(methoxymethyl)-2-oxo-1,2-dihydroquinolin-7-yl)-2-(2-methyl-1H-indol-3-yl)-2-oxoacetamide	N-(4-(methoxymethyl)-2-oxo-1,2-dihydroquinolin-7-yl)-2-(2-methyl-1H-indol-3-yl)-2-oxoacetamide	分子量：389.4 密度：N/A 沸点：N/A 熔点：N/A	1251564-33-6	C₂₂H₁₉N₃O₄
2,4-dichloro-N-(5,6-dihydrothiazolo[2,3-c][1,2,4]triazol-3-yl)benzamide	2,4-dichloro-N-(5,6-dihydrothiazolo[2,3-c][1,2,4]triazol-3-yl)benzamide	分子量：315.2 密度：N/A 沸点：N/A 熔点：N/A	921152-70-7	C₁₁H₈Cl₂N₄OS
N-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)-2-((5-methoxyisoquinolin-1-yl)thio)acetamide	N-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)-2-((5-methoxyisoquinolin-1-yl)thio)acetamide	分子量：382.4 密度：N/A 沸点：N/A 熔点：N/A	1203034-78-9	C₂₀H₁₈N₂O₄S
2,5-dichloro-N-(5,6-dihydrothiazolo[2,3-c][1,2,4]triazol-3-yl)benzamide	2,5-dichloro-N-(5,6-dihydrothiazolo[2,3-c][1,2,4]triazol-3-yl)benzamide	分子量：315.2 密度：N/A 沸点：N/A 熔点：N/A	920489-28-7	C₁₁H₈Cl₂N₄OS
5-bromo-2-chloro-N-(5,6-dihydrothiazolo[2,3-c][1,2,4]triazol-3-yl)benzamide	5-bromo-2-chloro-N-(5,6-dihydrothiazolo[2,3-c][1,2,4]triazol-3-yl)benzamide	分子量：359.63 密度：N/A 沸点：N/A 熔点：N/A	921112-89-2	C₁₁H₈BrClN₄OS
ethyl 2-(2-((3-oxo-2,3-dihydro-1H-inden-5-yl)oxy)acetamido)-5,6-dihydro-4H-cyclopenta[d]thiazole-4-carboxylate	ethyl 2-(2-((3-oxo-2,3-dihydro-1H-inden-5-yl)oxy)acetamido)-5,6-dihydro-4H-cyclopenta[d]thiazole-4-carboxylate	分子量：400.4 密度：N/A 沸点：N/A 熔点：N/A	1203084-90-5	C₂₀H₂₀N₂O₅S
N-(2,6-difluorobenzyl)-2-((3-oxo-2,3-dihydro-1H-inden-5-yl)oxy)acetamide	N-(2,6-difluorobenzyl)-2-((3-oxo-2,3-dihydro-1H-inden-5-yl)oxy)acetamide	分子量：331.3 密度：N/A 沸点：N/A 熔点：N/A	1203387-04-5	C₁₈H₁₅F₂NO₃
N-(3,4-dimethoxyphenethyl)-2-((3-oxo-2,3-dihydro-1H-inden-5-yl)oxy)acetamide	N-(3,4-dimethoxyphenethyl)-2-((3-oxo-2,3-dihydro-1H-inden-5-yl)oxy)acetamide	分子量：369.4 密度：N/A 沸点：N/A 熔点：N/A	1203301-94-3	C₂₁H₂₃NO₅
6-(2-(4-(4-fluorophenyl)piperazin-1-yl)-2-oxoethoxy)-2,3-dihydro-1H-inden-1-one	6-(2-(4-(4-fluorophenyl)piperazin-1-yl)-2-oxoethoxy)-2,3-dihydro-1H-inden-1-one	分子量：368.4 密度：N/A 沸点：N/A 熔点：N/A	1203298-93-4	C₂₁H₂₁FN₂O₃
N-(4-carbamoylphenyl)-3-(4-chlorophenyl)-5-methyl-2,4-dioxo-2,3,4,5-tetrahydro-1H-pyrrolo[3,2-d]pyrimidine-7-carboxamide	N-(4-carbamoylphenyl)-3-(4-chlorophenyl)-5-methyl-2,4-dioxo-2,3,4,5-tetrahydro-1H-pyrrolo[3,2-d]pyrimidine-7-carboxamide	分子量：437.8 密度：N/A 沸点：N/A 熔点：N/A	921852-52-0	C₂₁H₁₆ClN₅O₄
(3-(1H-tetrazol-1-yl)phenyl)(4-(6-(piperidin-1-yl)pyrimidin-4-yl)piperazin-1-yl)methanone	(3-(1H-tetrazol-1-yl)phenyl)(4-(6-(piperidin-1-yl)pyrimidin-4-yl)piperazin-1-yl)methanone	分子量：419.5 密度：N/A 沸点：N/A 熔点：N/A	1207024-91-6	C₂₁H₂₅N₉O
2-(1-methyl-1H-indol-3-yl)-1-(4-(6-(piperidin-1-yl)pyrimidin-4-yl)piperazin-1-yl)ethanone	2-(1-methyl-1H-indol-3-yl)-1-(4-(6-(piperidin-1-yl)pyrimidin-4-yl)piperazin-1-yl)ethanone	分子量：418.5 密度：N/A 沸点：N/A 熔点：N/A	1206985-35-4	C₂₄H₃₀N₆O
2-[(Ethylcarbamoyl)amino]-2-oxo-1-phenylethyl 3-hydroxybenzoate	2-[(Ethylcarbamoyl)amino]-2-oxo-1-phenylethyl 3-hydroxybenzoate	分子量：342.3 密度：N/A 沸点：N/A 熔点：N/A	1009681-24-6	C₁₈H₁₈N₂O₅
1-(2,5-Dimethylphenyl)-1-oxopropan-2-yl 2-(methylsulfanyl)pyridine-3-carboxylate	1-(2,5-Dimethylphenyl)-1-oxopropan-2-yl 2-(methylsulfanyl)pyridine-3-carboxylate	分子量：329.4 密度：N/A 沸点：N/A 熔点：N/A	1147392-05-9	C₁₈H₁₉NO₃S
1-(3,4-Dimethylphenyl)-1-oxopropan-2-yl 2-(methylsulfanyl)pyridine-3-carboxylate	1-(3,4-Dimethylphenyl)-1-oxopropan-2-yl 2-(methylsulfanyl)pyridine-3-carboxylate	分子量：329.4 密度：N/A 沸点：N/A 熔点：N/A	1090038-87-1	C₁₈H₁₉NO₃S
1-(4-Ethoxyphenyl)-1-oxopropan-2-yl 2-(methylsulfanyl)pyridine-3-carboxylate	1-(4-Ethoxyphenyl)-1-oxopropan-2-yl 2-(methylsulfanyl)pyridine-3-carboxylate	分子量：345.4 密度：N/A 沸点：N/A 熔点：N/A	1089572-87-1	C₁₈H₁₉NO₄S
2-Fluoro-N-(2-(pyridin-2-yl)ethyl)benzamide	2-Fluoro-N-(2-(pyridin-2-yl)ethyl)benzamide	分子量：244.26 密度：N/A 沸点：N/A 熔点：N/A	1182917-35-6	C₁₄H₁₃FN₂O
N-(3-methoxypropyl)tetrazolo[1,5-b]pyridazin-6-amine	N-(3-methoxypropyl)tetrazolo[1,5-b]pyridazin-6-amine	分子量：208.22 密度：N/A 沸点：N/A 熔点：N/A	1209356-59-1	C₈H₁₂N₆O
[(1-Cyano-1,2-dimethylpropyl)carbamoyl]methyl 2-(4-methoxyphenoxy)acetate	[(1-Cyano-1,2-dimethylpropyl)carbamoyl]methyl 2-(4-methoxyphenoxy)acetate	分子量：334.4 密度：N/A 沸点：N/A 熔点：N/A	1147517-81-4	C₁₇H₂₂N₂O₅
[(1-Cyano-1,2-dimethylpropyl)carbamoyl]methyl 2-(3-methylphenoxy)acetate	[(1-Cyano-1,2-dimethylpropyl)carbamoyl]methyl 2-(3-methylphenoxy)acetate	分子量：318.4 密度：N/A 沸点：N/A 熔点：N/A	1117822-54-4	C₁₇H₂₂N₂O₄
(R)-Oxiranepropanoic acid methyl ester	(R)-Oxiranepropanoic acid methyl ester	分子量：130.14 密度：N/A 沸点：N/A 熔点：N/A	162600-37-5	C₆H₁₀O₃
N-(4-Cyanobenzyl)picolinamide	N-(4-Cyanobenzyl)picolinamide	分子量：237.26 密度：N/A 沸点：N/A 熔点：N/A	1206966-56-4	C₁₄H₁₁N₃O
3-bromo-1H-indole-2-carboxamide	3-bromo-1H-indole-2-carboxamide	分子量：239.07 密度：N/A 沸点：N/A 熔点：N/A	890435-14-0	C₉H₇BrN₂O
Phenyl 4-((5-chloro-2-methoxyphenylsulfonamido)methyl)piperidine-1-carboxylate	Phenyl 4-((5-chloro-2-methoxyphenylsulfonamido)methyl)piperidine-1-carboxylate	分子量：438.9 密度：N/A 沸点：N/A 熔点：N/A	1235022-37-3	C₂₀H₂₃ClN₂O₅S
(E)-N-(3-(2-ethoxyethyl)benzo[d]thiazol-2(3H)-ylidene)pyrazine-2-carboxamide	(E)-N-(3-(2-ethoxyethyl)benzo[d]thiazol-2(3H)-ylidene)pyrazine-2-carboxamide	分子量：328.4 密度：N/A 沸点：N/A 熔点：N/A	1173439-62-7	C₁₆H₁₆N₄O₂S
N-(1-cyano-1,2-dimethylpropyl)-2-{[4-(2-methylphenyl)-5-(pyridin-4-yl)-4H-1,2,4-triazol-3-yl]sulfanyl}propanamide	N-(1-cyano-1,2-dimethylpropyl)-2-{[4-(2-methylphenyl)-5-(pyridin-4-yl)-4H-1,2,4-triazol-3-yl]sulfanyl}propanamide	分子量：434.6 密度：N/A 沸点：N/A 熔点：N/A	1147392-43-5	C₂₃H₂₆N₆OS
2,6-Bis(trifluoromethyl)benzo[d]thiazole	2,6-Bis(trifluoromethyl)benzo[d]thiazole	分子量：271.18 密度：N/A 沸点：N/A 熔点：N/A	1246965-94-5	C₉H₃F₆NS
[(1-cyano-1,2-dimethylpropyl)carbamoyl]methyl 4-(1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl)butanoate	[(1-cyano-1,2-dimethylpropyl)carbamoyl]methyl 4-(1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl)butanoate	分子量：385.4 密度：N/A 沸点：N/A 熔点：N/A	1147392-46-8	C₂₀H₂₃N₃O₅
N-(4-iodophenyl)oxolane-3-carboxamide	N-(4-iodophenyl)oxolane-3-carboxamide	分子量：317.12 密度：N/A 沸点：N/A 熔点：N/A	1250306-34-3	C₁₁H₁₂INO₂
(E)-N-(4-fluoro-3-(2-methoxyethyl)benzo[d]thiazol-2(3H)-ylidene)-2-(N-methylmethylsulfonamido)acetamide	(E)-N-(4-fluoro-3-(2-methoxyethyl)benzo[d]thiazol-2(3H)-ylidene)-2-(N-methylmethylsulfonamido)acetamide	分子量：375.4 密度：N/A 沸点：N/A 熔点：N/A	1173595-39-5	C₁₄H₁₈FN₃O₄S₂
(E)-N-(4-fluoro-3-(2-methoxyethyl)benzo[d]thiazol-2(3H)-ylidene)-2-(2-oxobenzo[d]oxazol-3(2H)-yl)acetamide	(E)-N-(4-fluoro-3-(2-methoxyethyl)benzo[d]thiazol-2(3H)-ylidene)-2-(2-oxobenzo[d]oxazol-3(2H)-yl)acetamide	分子量：401.4 密度：N/A 沸点：N/A 熔点：N/A	1173437-16-5	C₁₉H₁₆FN₃O₄S
N-(1-Cyano-1-cyclopropylethyl)-2-[3-(3,4-dimethoxyphenyl)-4-oxoquinazolin-2-yl]sulfanylacetamide	N-(1-Cyano-1-cyclopropylethyl)-2-[3-(3,4-dimethoxyphenyl)-4-oxoquinazolin-2-yl]sulfanylacetamide	分子量：464.5 密度：N/A 沸点：N/A 熔点：N/A	1147292-73-6	C₂₄H₂₄N₄O₄S
4-(4-(Pyridin-3-yl)-1H-imidazol-1-yl)butan-1-amine trihydrochloride	4-(4-(Pyridin-3-yl)-1H-imidazol-1-yl)butan-1-amine trihydrochloride	分子量：325.7 密度：N/A 沸点：N/A 熔点：N/A	1145660-55-4	C₁₂H₁₉Cl₃N₄
4-{Dimethyl[(1E)-1-octen-1-yl]silyl}pyridine	4-{Dimethyl[(1E)-1-octen-1-yl]silyl}pyridine	分子量：247.45 密度：N/A 沸点：N/A 熔点：N/A	424822-24-2	C₁₅H₂₅NSi
1-[(1-Cyano-1,2-dimethylpropyl)carbamoyl]ethyl 3-(1-methyl-4-oxo-1,4-dihydroquinazolin-2-yl)propanoate	1-[(1-Cyano-1,2-dimethylpropyl)carbamoyl]ethyl 3-(1-methyl-4-oxo-1,4-dihydroquinazolin-2-yl)propanoate	分子量：398.5 密度：N/A 沸点：N/A 熔点：N/A	1038171-48-0	C₂₁H₂₆N₄O₄
1-[(1-cyano-1,2-dimethylpropyl)carbamoyl]ethyl 2-[(2H-1,3-benzodioxol-5-yl)formamido]acetate	1-[(1-cyano-1,2-dimethylpropyl)carbamoyl]ethyl 2-[(2H-1,3-benzodioxol-5-yl)formamido]acetate	分子量：389.4 密度：N/A 沸点：N/A 熔点：N/A	1111472-84-4	C₁₉H₂₃N₃O₆