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
3-(2-Fluorophenyl)-1-(piperidin-1-YL)propan-1-one	3-(2-Fluorophenyl)-1-(piperidin-1-YL)propan-1-one	分子量：235.30 密度：N/A 沸点：N/A 熔点：N/A	1197972-23-8	C₁₄H₁₈FNO
2-Chloro-6-(trifluoromethyl)benzene-1-sulfonamide	2-Chloro-6-(trifluoromethyl)benzene-1-sulfonamide	分子量：259.63 密度：N/A 沸点：N/A 熔点：N/A	874814-71-8	C₇H₅ClF₃NO₂S
2-(benzyloxy)-N-{[6-(dimethylamino)pyridin-3-yl]methyl}propanamide	2-(benzyloxy)-N-{[6-(dimethylamino)pyridin-3-yl]methyl}propanamide	分子量：313.4 密度：N/A 沸点：N/A 熔点：N/A	1208389-31-4	C₁₈H₂₃N₃O₂
Ethanone, 1-[(1S,2S)-1,2-dihydroxy-3-cyclohexen-1-yl]-	Ethanone, 1-[(1S,2S)-1,2-dihydroxy-3-cyclohexen-1-yl]-	分子量：156.18 密度：N/A 沸点：N/A 熔点：N/A	1932159-97-1	C₈H₁₂O₃
1-(3A,7a-dihydro-1H-indol-1-yl)ethanone	1-(3A,7a-dihydro-1H-indol-1-yl)ethanone	分子量：161.20 密度：N/A 沸点：N/A 熔点：N/A	411219-93-7	C₁₀H₁₁NO
1-Benzyl-3-(6-methoxypyridin-3-yl)urea	1-Benzyl-3-(6-methoxypyridin-3-yl)urea	分子量：257.29 密度：N/A 沸点：N/A 熔点：N/A	1378233-16-9	C₁₄H₁₅N₃O₂
4-(1H-imidazol-4-yl)benzene-1-sulfonamide	4-(1H-imidazol-4-yl)benzene-1-sulfonamide	分子量：223.25 密度：N/A 沸点：N/A 熔点：N/A	1099660-80-6	C₉H₉N₃O₂S
8-(2-Phenylethenesulfonyl)-1,3,8-triazaspiro[4.5]decane-2,4-dione	8-(2-Phenylethenesulfonyl)-1,3,8-triazaspiro[4.5]decane-2,4-dione	分子量：335.4 密度：N/A 沸点：N/A 熔点：N/A	1198065-85-8	C₁₅H₁₇N₃O₄S
(E)-N-[1-(5-methyl-1,2,4-oxadiazol-3-yl)cyclohexyl]-2-phenylethenesulfonamide	(E)-N-[1-(5-methyl-1,2,4-oxadiazol-3-yl)cyclohexyl]-2-phenylethenesulfonamide	分子量：347.4 密度：N/A 沸点：N/A 熔点：N/A	1198068-24-4	C₁₇H₂₁N₃O₃S
Methyl 2,4-difluoro-5-sulfamoylbenzoate	Methyl 2,4-difluoro-5-sulfamoylbenzoate	分子量：251.21 密度：N/A 沸点：N/A 熔点：N/A	1099660-82-8	C₈H₇F₂NO₄S
3-(4-Methylphenyl)-2,4-dioxo-1,3-thiazolidine-5-carboxamide	3-(4-Methylphenyl)-2,4-dioxo-1,3-thiazolidine-5-carboxamide	分子量：250.28 密度：N/A 沸点：N/A 熔点：N/A	452368-71-7	C₁₁H₁₀N₂O₃S
1-{3-[3-(3-Chlorophenyl)-1,2,4-oxadiazol-5-yl]pyridin-2-yl}piperidine-4-carboxylic acid	1-{3-[3-(3-Chlorophenyl)-1,2,4-oxadiazol-5-yl]pyridin-2-yl}piperidine-4-carboxylic acid	分子量：384.8 密度：N/A 沸点：N/A 熔点：N/A	1260934-87-9	C₁₉H₁₇ClN₄O₃
3-[3-(3-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]propanoic acid	3-[3-(3-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]propanoic acid	分子量：274.27 密度：N/A 沸点：N/A 熔点：N/A	1255784-94-1	C₁₄H₁₄N₂O₄
2-Nitro-4-[(E)-({4-[(1E)-2-phenyldiazen-1-YL]phenyl}imino)methyl]phenyl 2,4-dichlorobenzoate	2-Nitro-4-[(E)-({4-[(1E)-2-phenyldiazen-1-YL]phenyl}imino)methyl]phenyl 2,4-dichlorobenzoate	分子量：519.3 密度：N/A 沸点：N/A 熔点：N/A	327990-78-3	C₂₆H₁₆Cl₂N₄O₄
2,6-Dibromo-4-[(E)-({4-[(1E)-2-phenyldiazen-1-YL]phenyl}imino)methyl]phenyl 3,5-dinitrobenzoate	2,6-Dibromo-4-[(E)-({4-[(1E)-2-phenyldiazen-1-YL]phenyl}imino)methyl]phenyl 3,5-dinitrobenzoate	分子量：653.2 密度：N/A 沸点：N/A 熔点：N/A	327990-89-6	C₂₆H₁₅Br₂N₅O₆
3-[1-(4-fluorophenyl)-1H-1,2,3-triazol-4-yl]-1,2,4-oxadiazole-5-carbohydrazide	3-[1-(4-fluorophenyl)-1H-1,2,3-triazol-4-yl]-1,2,4-oxadiazole-5-carbohydrazide	分子量：289.23 密度：N/A 沸点：N/A 熔点：N/A	1255779-12-4	C₁₁H₈FN₇O₂
4-Methyl-2-(piperidin-3-yloxy)pyridine	4-Methyl-2-(piperidin-3-yloxy)pyridine	分子量：192.26 密度：N/A 沸点：N/A 熔点：N/A	1185538-95-7	C₁₁H₁₆N₂O
9-(3,4-dimethylphenyl)pyrazolo[1,5-a][1,2,4]triazolo[3,4-c]pyrazin-3(2H)-one	9-(3,4-dimethylphenyl)pyrazolo[1,5-a][1,2,4]triazolo[3,4-c]pyrazin-3(2H)-one	分子量：279.30 密度：N/A 沸点：N/A 熔点：N/A	1255785-56-8	C₁₅H₁₃N₅O
9-(4-butoxyphenyl)pyrazolo[1,5-a][1,2,4]triazolo[3,4-c]pyrazin-3(2H)-one	9-(4-butoxyphenyl)pyrazolo[1,5-a][1,2,4]triazolo[3,4-c]pyrazin-3(2H)-one	分子量：323.35 密度：N/A 沸点：N/A 熔点：N/A	1255777-64-0	C₁₇H₁₇N₅O₂
5-{[5-(chloromethyl)-1,2,4-oxadiazol-3-yl]methyl}-2-(4-methylphenyl)pyrazolo[1,5-a]pyrazin-4(5H)-one	5-{[5-(chloromethyl)-1,2,4-oxadiazol-3-yl]methyl}-2-(4-methylphenyl)pyrazolo[1,5-a]pyrazin-4(5H)-one	分子量：355.8 密度：N/A 沸点：N/A 熔点：N/A	1260953-54-5	C₁₇H₁₄ClN₅O₂
(1Z)-N'-hydroxy-2-[2-(4-methylphenyl)-4-oxopyrazolo[1,5-a]pyrazin-5(4H)-yl]ethanimidamide	(1Z)-N'-hydroxy-2-[2-(4-methylphenyl)-4-oxopyrazolo[1,5-a]pyrazin-5(4H)-yl]ethanimidamide	分子量：297.31 密度：N/A 沸点：N/A 熔点：N/A	1255791-15-1	C₁₅H₁₅N₅O₂
(1Z)-N'-hydroxy-2-(4-oxo-2-phenylpyrazolo[1,5-a]pyrazin-5(4H)-yl)ethanimidamide	(1Z)-N'-hydroxy-2-(4-oxo-2-phenylpyrazolo[1,5-a]pyrazin-5(4H)-yl)ethanimidamide	分子量：283.29 密度：N/A 沸点：N/A 熔点：N/A	1255790-96-5	C₁₄H₁₃N₅O₂
(1Z)-2-[2-(2,4-dimethylphenyl)-4-oxopyrazolo[1,5-a]pyrazin-5(4H)-yl]-N'-hydroxyethanimidamide	(1Z)-2-[2-(2,4-dimethylphenyl)-4-oxopyrazolo[1,5-a]pyrazin-5(4H)-yl]-N'-hydroxyethanimidamide	分子量：311.34 密度：N/A 沸点：N/A 熔点：N/A	1255790-95-4	C₁₆H₁₇N₅O₂
(1Z)-N'-hydroxy-2-[2-(4-methoxyphenyl)-4-oxopyrazolo[1,5-a]pyrazin-5(4H)-yl]ethanimidamide	(1Z)-N'-hydroxy-2-[2-(4-methoxyphenyl)-4-oxopyrazolo[1,5-a]pyrazin-5(4H)-yl]ethanimidamide	分子量：313.31 密度：N/A 沸点：N/A 熔点：N/A	1255790-87-4	C₁₅H₁₅N₅O₃
5-((4-(pyrrolidin-1-yl)phenyl)sulfonyl)-2-thioxo-2,3-dihydropyrimidin-4(1H)-one	5-((4-(pyrrolidin-1-yl)phenyl)sulfonyl)-2-thioxo-2,3-dihydropyrimidin-4(1H)-one	分子量：337.4 密度：N/A 沸点：N/A 熔点：N/A	1260921-18-3	C₁₄H₁₅N₃O₃S₂
2-Oxo-2-[4-(thiophene-2-carbonyl)piperazin-1-yl]ethyl 2-(furan-2-yl)-4-methyl-6-(methylsulfanyl)pyrimidine-5-carboxylate	2-Oxo-2-[4-(thiophene-2-carbonyl)piperazin-1-yl]ethyl 2-(furan-2-yl)-4-methyl-6-(methylsulfanyl)pyrimidine-5-carboxylate	分子量：486.6 密度：N/A 沸点：N/A 熔点：N/A	1197881-51-8	C₂₂H₂₂N₄O₅S₂
N-(1-(furan-2-yl)propan-2-yl)pivalamide	N-(1-(furan-2-yl)propan-2-yl)pivalamide	分子量：209.28 密度：N/A 沸点：N/A 熔点：N/A	1210193-14-8	C₁₂H₁₉NO₂
N-(1-cyanocycloheptyl)-2-[(3-acetamidophenyl)amino]acetamide	N-(1-cyanocycloheptyl)-2-[(3-acetamidophenyl)amino]acetamide	分子量：328.4 密度：N/A 沸点：N/A 熔点：N/A	1210176-30-9	C₁₈H₂₄N₄O₂
2-[(4-benzyl-5-methyl-1H-imidazol-2-yl)sulfanyl]-N-(1-cyanocycloheptyl)acetamide	2-[(4-benzyl-5-methyl-1H-imidazol-2-yl)sulfanyl]-N-(1-cyanocycloheptyl)acetamide	分子量：382.5 密度：N/A 沸点：N/A 熔点：N/A	1197872-56-2	C₂₁H₂₆N₄OS
N-[(4-ethoxyphenyl)methyl]-1-ethyl-1H-pyrazol-4-amine	N-[(4-ethoxyphenyl)methyl]-1-ethyl-1H-pyrazol-4-amine	分子量：245.32 密度：N/A 沸点：N/A 熔点：N/A	1855948-90-1	C₁₄H₁₉N₃O
2-{[(4-chlorophenyl)methyl]sulfanyl}-N-(1-cyanocycloheptyl)acetamide	2-{[(4-chlorophenyl)methyl]sulfanyl}-N-(1-cyanocycloheptyl)acetamide	分子量：336.9 密度：N/A 沸点：N/A 熔点：N/A	1208921-02-1	C₁₇H₂₁ClN₂OS
2-[(4-butyl-5-oxo-4,5-dihydro-1H-1,2,4-triazol-3-yl)sulfanyl]-N-(1-cyanocycloheptyl)acetamide	2-[(4-butyl-5-oxo-4,5-dihydro-1H-1,2,4-triazol-3-yl)sulfanyl]-N-(1-cyanocycloheptyl)acetamide	分子量：351.5 密度：N/A 沸点：N/A 熔点：N/A	1197970-63-0	C₁₆H₂₅N₅O₂S
N-(1-cyanocyclopentyl)-2-({2-[(2,2,2-trifluoroethyl)sulfanyl]phenyl}amino)acetamide	N-(1-cyanocyclopentyl)-2-({2-[(2,2,2-trifluoroethyl)sulfanyl]phenyl}amino)acetamide	分子量：357.4 密度：N/A 沸点：N/A 熔点：N/A	1197481-94-9	C₁₆H₁₈F₃N₃OS
(E)-N-[1-oxo-1-[4-[(3-thiophen-3-yl-1,2,4-oxadiazol-5-yl)methyl]piperazin-1-yl]propan-2-yl]-2-phenylethenesulfonamide	(E)-N-[1-oxo-1-[4-[(3-thiophen-3-yl-1,2,4-oxadiazol-5-yl)methyl]piperazin-1-yl]propan-2-yl]-2-phenylethenesulfonamide	分子量：487.6 密度：N/A 沸点：N/A 熔点：N/A	1214874-29-9	C₂₂H₂₅N₅O₄S₂
n4-(2-Bromobenzyl)-n4,6-dimethylpyrimidine-2,4-diamine	n4-(2-Bromobenzyl)-n4,6-dimethylpyrimidine-2,4-diamine	分子量：307.19 密度：N/A 沸点：N/A 熔点：N/A	1209911-51-2	C₁₃H₁₅BrN₄
4-[4-(Prop-2-yn-1-yl)piperazin-1-yl]-2-(pyridin-4-yl)quinazoline	4-[4-(Prop-2-yn-1-yl)piperazin-1-yl]-2-(pyridin-4-yl)quinazoline	分子量：329.4 密度：N/A 沸点：N/A 熔点：N/A	1209684-84-3	C₂₀H₁₉N₅
(E)-N-benzyl-N,2-diphenylethenesulfonamide	(E)-N-benzyl-N,2-diphenylethenesulfonamide	分子量：349.4 密度：N/A 沸点：N/A 熔点：N/A	1181478-54-5	C₂₁H₁₉NO₂S
N-methoxy-N,6-dimethylpyridine-2-carboxamide	N-methoxy-N,6-dimethylpyridine-2-carboxamide	分子量：180.20 密度：N/A 沸点：N/A 熔点：N/A	476471-33-7	C₉H₁₂N₂O₂
N-Ethyl-2-[[4-ethyl-5-(2-furanyl)-4H-1,2,4-triazol-3-yl]thio]-N-[2-[(1-methylethyl)amino]-2-oxoethyl]acetamide	N-Ethyl-2-[[4-ethyl-5-(2-furanyl)-4H-1,2,4-triazol-3-yl]thio]-N-[2-[(1-methylethyl)amino]-2-oxoethyl]acetamide	分子量：379.5 密度：N/A 沸点：N/A 熔点：N/A	1209796-84-8	C₁₇H₂₅N₅O₃S
(Z)-4-(((1-(4-fluorobenzyl)-2,2-dioxido-4-oxo-1H-thieno[3,2-c][1,2]thiazin-3(4H)-ylidene)methyl)amino)benzenesulfonamide	(Z)-4-(((1-(4-fluorobenzyl)-2,2-dioxido-4-oxo-1H-thieno[3,2-c][1,2]thiazin-3(4H)-ylidene)methyl)amino)benzenesulfonamide	分子量：493.6 密度：N/A 沸点：N/A 熔点：N/A	894684-82-3	C₂₀H₁₆FN₃O₅S₃
(3R,5R)-7-[5-[(4-carbamoylphenyl)carbamoyl]-3-(4-fluorophenyl)-4-phenyl-1-propan-2-ylpyrrol-2-yl]-3,5-dihydroxyheptanoic acid	(3R,5R)-7-[5-[(4-carbamoylphenyl)carbamoyl]-3-(4-fluorophenyl)-4-phenyl-1-propan-2-ylpyrrol-2-yl]-3,5-dihydroxyheptanoic acid	分子量：601.7 密度：N/A 沸点：N/A 熔点：N/A	950645-16-6	C₃₄H₃₆FN₃O₆
3,5-dichloro-N-(4-hexylphenyl)-2-hydroxybenzenesulfonamide	3,5-dichloro-N-(4-hexylphenyl)-2-hydroxybenzenesulfonamide	分子量：402.3 密度：N/A 沸点：N/A 熔点：N/A	943962-48-9	C₁₈H₂₁Cl₂NO₃S
3,5-dichloro-2-hydroxy-N-(3-phenoxyphenyl)benzenesulfonamide	3,5-dichloro-2-hydroxy-N-(3-phenoxyphenyl)benzenesulfonamide	分子量：410.3 密度：N/A 沸点：N/A 熔点：N/A	943962-50-3	C₁₈H₁₃Cl₂NO₄S
Methyl 3-[(2,5-dioxo-4,4-diphenylimidazolidin-1-yl)methyl]benzoate	Methyl 3-[(2,5-dioxo-4,4-diphenylimidazolidin-1-yl)methyl]benzoate	分子量：400.4 密度：N/A 沸点：N/A 熔点：N/A	887913-59-9	C₂₄H₂₀N₂O₄
Ribofuranose 2'-phosphonate	Ribofuranose 2'-phosphonate	分子量：374.29 密度：N/A 沸点：N/A 熔点：N/A	802592-69-4	C₁₂H₁₉N₆O₆P
(S)-2-(5-(2-(5-methyl-2-phenylthiazol-4-yl)ethoxy)-2,3-dihydro-1H-inden-1-yl)acetic acid	(S)-2-(5-(2-(5-methyl-2-phenylthiazol-4-yl)ethoxy)-2,3-dihydro-1H-inden-1-yl)acetic acid	分子量：393.5 密度：N/A 沸点：N/A 熔点：N/A	496062-21-6	C₂₃H₂₃NO₃S
6,7-dimethoxy-4-((1R,2S)-2-phenylcyclopropylamino)quinoline-3-carbonitrile	6,7-dimethoxy-4-((1R,2S)-2-phenylcyclopropylamino)quinoline-3-carbonitrile	分子量：345.4 密度：N/A 沸点：N/A 熔点：N/A	958648-91-4	C₂₁H₁₉N₃O₂
[(1-cyanocyclohexyl)carbamoyl]methyl 3-(1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl)propanoate	[(1-cyanocyclohexyl)carbamoyl]methyl 3-(1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl)propanoate	分子量：383.4 密度：N/A 沸点：N/A 熔点：N/A	1210334-38-5	C₂₀H₂₁N₃O₅
1-[(1-cyanocyclohexyl)carbamoyl]ethyl 3-(1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl)propanoate	1-[(1-cyanocyclohexyl)carbamoyl]ethyl 3-(1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl)propanoate	分子量：397.4 密度：N/A 沸点：N/A 熔点：N/A	1209307-35-6	C₂₁H₂₃N₃O₅
[(1-cyanocyclohexyl)(methyl)carbamoyl]methyl 3-(1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl)propanoate	[(1-cyanocyclohexyl)(methyl)carbamoyl]methyl 3-(1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl)propanoate	分子量：397.4 密度：N/A 沸点：N/A 熔点：N/A	1211627-61-0	C₂₁H₂₃N₃O₅