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-Fluoro-3-(1H-pyrazol-3-yl)benzoic acid	2-Fluoro-3-(1H-pyrazol-3-yl)benzoic acid	分子量：206.17 密度：N/A 沸点：N/A 熔点：N/A	2576326-91-3	C₁₀H₇FN₂O₂
(7R,9AS)-7-(3-chloro-4-fluorophenyl)octahydro-2H-pyrido[1,2-a]pyrazin-7-ol	(7R,9AS)-7-(3-chloro-4-fluorophenyl)octahydro-2H-pyrido[1,2-a]pyrazin-7-ol	分子量：284.75 密度：N/A 沸点：N/A 熔点：N/A	2576326-37-7	C₁₄H₁₈ClFN₂O
1-(Dimethyl-1,3-oxazol-2-yl)cyclopropan-1-ol	1-(Dimethyl-1,3-oxazol-2-yl)cyclopropan-1-ol	分子量：153.18 密度：N/A 沸点：N/A 熔点：N/A	2229426-48-4	C₈H₁₁NO₂
N-cyclopropyl-1-[6-(dimethylamino)pyrimidin-4-yl]pyrrolidine-3-carboxamide	N-cyclopropyl-1-[6-(dimethylamino)pyrimidin-4-yl]pyrrolidine-3-carboxamide	分子量：275.35 密度：N/A 沸点：N/A 熔点：N/A	2877630-48-1	C₁₄H₂₁N₅O
Tert-butyl 8-(hydroxymethyl)-3-oxa-9-azaspiro[5.5]undecane-9-carboxylate	Tert-butyl 8-(hydroxymethyl)-3-oxa-9-azaspiro[5.5]undecane-9-carboxylate	分子量：285.38 密度：N/A 沸点：N/A 熔点：N/A	2761524-95-0	C₁₅H₂₇NO₄
[3-(4-Methylpiperidin-2-yl)phenyl]methanamine	[3-(4-Methylpiperidin-2-yl)phenyl]methanamine	分子量：204.31 密度：N/A 沸点：N/A 熔点：N/A	2169539-11-9	C₁₃H₂₀N₂
4-{[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1H-1,2,4-triazol-3-yl]formamido}-2,2-dimethylbutanoic acid	4-{[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1H-1,2,4-triazol-3-yl]formamido}-2,2-dimethylbutanoic acid	分子量：463.5 密度：N/A 沸点：N/A 熔点：N/A	2171951-08-7	C₂₄H₂₅N₅O₅
tert-Butyl 6-fluorochromane-3-carboxylate	tert-Butyl 6-fluorochromane-3-carboxylate	分子量：252.28 密度：N/A 沸点：N/A 熔点：N/A	2762727-93-3	C₁₄H₁₇FO₃
(5-{1,3-dimethyl-1H-thieno[2,3-c]pyrazol-5-yl}piperidin-3-yl)methanamine	(5-{1,3-dimethyl-1H-thieno[2,3-c]pyrazol-5-yl}piperidin-3-yl)methanamine	分子量：264.39 密度：N/A 沸点：N/A 熔点：N/A	2171821-24-0	C₁₃H₂₀N₄S
1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)benzoyl]azetidine-3-carboxylic acid	1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)benzoyl]azetidine-3-carboxylic acid	分子量：442.5 密度：N/A 沸点：N/A 熔点：N/A	2172147-00-9	C₂₆H₂₂N₂O₅
3-Amino-2-(2-bromo-5-methylphenyl)propan-1-ol	3-Amino-2-(2-bromo-5-methylphenyl)propan-1-ol	分子量：244.13 密度：N/A 沸点：N/A 熔点：N/A	2228489-52-7	C₁₀H₁₄BrNO
Fmoc-5-oxo-5-(piperidin-1-yl)-L-Norvaline	Fmoc-5-oxo-5-(piperidin-1-yl)-L-Norvaline	分子量：436.5 密度：N/A 沸点：N/A 熔点：N/A	2559759-55-4	C₂₅H₂₈N₂O₅
(2S)-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}-5-oxo-5-(pyrrolidin-1-yl)pentanoic acid	(2S)-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}-5-oxo-5-(pyrrolidin-1-yl)pentanoic acid	分子量：422.5 密度：N/A 沸点：N/A 熔点：N/A	2559759-52-1	C₂₄H₂₆N₂O₅
Ethyl 3-(4-hydroxyoxan-4-yl)azetidine-3-carboxylate	Ethyl 3-(4-hydroxyoxan-4-yl)azetidine-3-carboxylate	分子量：229.27 密度：N/A 沸点：N/A 熔点：N/A	2172490-28-5	C₁₁H₁₉NO₄
6-chloro-1,2,3,4-tetrahydro-1-[(4-iodo-2-nitrophenoxy)methyl]-1-Naphthalenemethanol	6-chloro-1,2,3,4-tetrahydro-1-[(4-iodo-2-nitrophenoxy)methyl]-1-Naphthalenemethanol	分子量：473.7 密度：N/A 沸点：N/A 熔点：N/A	2580245-91-4	C₁₈H₁₇ClINO₄
3-Hydrazinyl-1-methylpiperidine dihydrochloride	3-Hydrazinyl-1-methylpiperidine dihydrochloride	分子量：202.12 密度：N/A 沸点：N/A 熔点：N/A	2243521-09-5	C₆H₁₇Cl₂N₃
2-[(5-bromo-2-methylphenyl)methyl]-2H-1,2,3-triazol-4-amine	2-[(5-bromo-2-methylphenyl)methyl]-2H-1,2,3-triazol-4-amine	分子量：267.13 密度：N/A 沸点：N/A 熔点：N/A	2138386-71-5	C₁₀H₁₁BrN₄
5-[(1-Aminocyclopropyl)methyl]thiophene-3-carbonitrile	5-[(1-Aminocyclopropyl)methyl]thiophene-3-carbonitrile	分子量：178.26 密度：N/A 沸点：N/A 熔点：N/A	2228312-08-9	C₉H₁₀N₂S
6-Methanesulfonylhex-3-en-2-one	6-Methanesulfonylhex-3-en-2-one	分子量：176.24 密度：N/A 沸点：N/A 熔点：N/A	2229646-35-7	C₇H₁₂O₃S
2-(2-Aminocyclopropyl)-4,5-dimethylphenol	2-(2-Aminocyclopropyl)-4,5-dimethylphenol	分子量：177.24 密度：N/A 沸点：N/A 熔点：N/A	2228368-93-0	C₁₁H₁₅NO
5-(Azidomethyl)-2-methyl-3-(piperazin-1-yl)aniline	5-(Azidomethyl)-2-methyl-3-(piperazin-1-yl)aniline	分子量：246.31 密度：N/A 沸点：N/A 熔点：N/A	2418727-49-6	C₁₂H₁₈N₆
3-(aminomethyl)-5-chloro-3,4-dihydro-1H-2-benzopyran-1-one	3-(aminomethyl)-5-chloro-3,4-dihydro-1H-2-benzopyran-1-one	分子量：211.64 密度：N/A 沸点：N/A 熔点：N/A	2137851-08-0	C₁₀H₁₀ClNO₂
2-Methoxy-4-propanoylheptane-3,5-dione	2-Methoxy-4-propanoylheptane-3,5-dione	分子量：214.26 密度：N/A 沸点：N/A 熔点：N/A	2137853-17-7	C₁₁H₁₈O₄
3-(1-methyl-1H-pyrazol-5-yl)-1-(2-methylpropyl)-1H-pyrazole-5-thiol	3-(1-methyl-1H-pyrazol-5-yl)-1-(2-methylpropyl)-1H-pyrazole-5-thiol	分子量：236.34 密度：N/A 沸点：N/A 熔点：N/A	2137859-38-0	C₁₁H₁₆N₄S
2-amino-2-methyl-3-[3-(propan-2-yl)-1H-1,2,4-triazol-1-yl]propanamide	2-amino-2-methyl-3-[3-(propan-2-yl)-1H-1,2,4-triazol-1-yl]propanamide	分子量：211.26 密度：N/A 沸点：N/A 熔点：N/A	1879202-49-9	C₉H₁₇N₅O
5-Chloro-2-(2-methylbutyl)-7-(trifluoromethyl)-[1,2,4]triazolo[1,5-a]pyridine	5-Chloro-2-(2-methylbutyl)-7-(trifluoromethyl)-[1,2,4]triazolo[1,5-a]pyridine	分子量：291.70 密度：N/A 沸点：N/A 熔点：N/A	2137775-36-9	C₁₂H₁₃ClF₃N₃
(3R)-3-amino-3-(2-methoxy-1,3-thiazol-5-yl)propanamide	(3R)-3-amino-3-(2-methoxy-1,3-thiazol-5-yl)propanamide	分子量：201.25 密度：N/A 沸点：N/A 熔点：N/A	1841321-83-2	C₇H₁₁N₃O₂S
(2R)-4-(2-fluoro-6-methoxyphenyl)butan-2-amine	(2R)-4-(2-fluoro-6-methoxyphenyl)butan-2-amine	分子量：197.25 密度：N/A 沸点：N/A 熔点：N/A	1344450-22-1	C₁₁H₁₆FNO
Methyl 4-amino-4-(5-nitrofuran-2-yl)butanoate	Methyl 4-amino-4-(5-nitrofuran-2-yl)butanoate	分子量：228.20 密度：N/A 沸点：N/A 熔点：N/A	1822459-27-7	C₉H₁₂N₂O₅
Methyl 3-hydroxy-3-(5-nitrofuran-2-yl)propanoate	Methyl 3-hydroxy-3-(5-nitrofuran-2-yl)propanoate	分子量：215.16 密度：N/A 沸点：N/A 熔点：N/A	2228556-73-6	C₈H₉NO₆
Methyl 4-amino-4-(pyrazin-2-yl)butanoate	Methyl 4-amino-4-(pyrazin-2-yl)butanoate	分子量：195.22 密度：N/A 沸点：N/A 熔点：N/A	2106734-52-3	C₉H₁₃N₃O₂
6-fluoro-7-hydroxy-2,3-dihydro-1H-indol-2-one	6-fluoro-7-hydroxy-2,3-dihydro-1H-indol-2-one	分子量：167.14 密度：N/A 沸点：N/A 熔点：N/A	2770359-09-4	C₈H₆FNO₂
2-(5-Methyl-1,2-oxazol-4-yl)ethane-1-thiol	2-(5-Methyl-1,2-oxazol-4-yl)ethane-1-thiol	分子量：143.21 密度：N/A 沸点：N/A 熔点：N/A	2228266-84-8	C₆H₉NOS
4-(4-Phenoxyphenyl)-1,3-oxazolidin-2-one	4-(4-Phenoxyphenyl)-1,3-oxazolidin-2-one	分子量：255.27 密度：N/A 沸点：N/A 熔点：N/A	2228651-96-3	C₁₅H₁₃NO₃
Sodium 3-(methanesulfonylmethyl)benzene-1-sulfinate	Sodium 3-(methanesulfonylmethyl)benzene-1-sulfinate	分子量：256.3 密度：N/A 沸点：N/A 熔点：N/A	2137589-30-9	C₈H₉NaO₄S₂
1,1-Difluoro-2-methyl-3-phenylbutan-2-amine	1,1-Difluoro-2-methyl-3-phenylbutan-2-amine	分子量：199.24 密度：N/A 沸点：N/A 熔点：N/A	2228328-23-0	C₁₁H₁₅F₂N
N-[(3-methyl-1H-1,2,4-triazol-5-yl)methyl]cyclobutanecarboxamide	N-[(3-methyl-1H-1,2,4-triazol-5-yl)methyl]cyclobutanecarboxamide	分子量：194.23 密度：N/A 沸点：N/A 熔点：N/A	2138184-80-0	C₉H₁₄N₄O
4-[2-(Propane-2-sulfonyl)phenyl]morpholin-3-one	4-[2-(Propane-2-sulfonyl)phenyl]morpholin-3-one	分子量：283.35 密度：N/A 沸点：N/A 熔点：N/A	2138267-25-9	C₁₃H₁₇NO₄S
3-(5-Phenylthiophen-2-yl)piperidine	3-(5-Phenylthiophen-2-yl)piperidine	分子量：243.4 密度：N/A 沸点：N/A 熔点：N/A	1260786-30-8	C₁₅H₁₇NS
Sodium 1-cyclopentanecarbonylazetidine-3-sulfinate	Sodium 1-cyclopentanecarbonylazetidine-3-sulfinate	分子量：239.27 密度：N/A 沸点：N/A 熔点：N/A	2138146-91-3	C₉H₁₄NNaO₃S
Sodium 2-bromo-3-fluoro-5-(methoxycarbonyl)benzene-1-sulfinate	Sodium 2-bromo-3-fluoro-5-(methoxycarbonyl)benzene-1-sulfinate	分子量：319.08 密度：N/A 沸点：N/A 熔点：N/A	2137763-47-2	C₈H₅BrFNaO₄S
2-{[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylpentanamido]methyl}-2-methylbutanoic acid	2-{[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylpentanamido]methyl}-2-methylbutanoic acid	分子量：466.6 密度：N/A 沸点：N/A 熔点：N/A	2172443-25-1	C₂₇H₃₄N₂O₅
(2S)-2-{3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethoxy]propanamido}butanoic acid	(2S)-2-{3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethoxy]propanamido}butanoic acid	分子量：440.5 密度：N/A 沸点：N/A 熔点：N/A	2171214-08-5	C₂₄H₂₈N₂O₆
(2R)-2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylbutanamido]-4-hydroxybutanoic acid	(2R)-2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylbutanamido]-4-hydroxybutanoic acid	分子量：440.5 密度：N/A 沸点：N/A 熔点：N/A	2648919-44-0	C₂₄H₂₈N₂O₆
(2S)-4-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]-2-hydroxybutanoic acid	(2S)-4-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]-2-hydroxybutanoic acid	分子量：440.5 密度：N/A 沸点：N/A 熔点：N/A	2171375-94-1	C₂₄H₂₈N₂O₆
(2S)-1-{2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethoxy]acetyl}piperidine-2-carboxylic acid	(2S)-1-{2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethoxy]acetyl}piperidine-2-carboxylic acid	分子量：452.5 密度：N/A 沸点：N/A 熔点：N/A	2171168-15-1	C₂₅H₂₈N₂O₆
2-{1-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoyl]piperidin-4-yl}acetic acid	2-{1-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoyl]piperidin-4-yl}acetic acid	分子量：450.5 密度：N/A 沸点：N/A 熔点：N/A	2171250-10-3	C₂₆H₃₀N₂O₅
(2R)-1-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-1,3-thiazole-4-carbonyl}pyrrolidine-2-carboxylic acid	(2R)-1-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-1,3-thiazole-4-carbonyl}pyrrolidine-2-carboxylic acid	分子量：477.5 密度：N/A 沸点：N/A 熔点：N/A	2171288-79-0	C₂₅H₂₃N₃O₅S
3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-{[1-(4-methyl-4H-1,2,4-triazol-3-yl)ethyl]carbamoyl}propanoic acid	3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-{[1-(4-methyl-4H-1,2,4-triazol-3-yl)ethyl]carbamoyl}propanoic acid	分子量：463.5 密度：N/A 沸点：N/A 熔点：N/A	2171744-58-2	C₂₄H₂₅N₅O₅
4-[(2-bromo-5-fluorophenyl)carbamoyl]-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoic acid	4-[(2-bromo-5-fluorophenyl)carbamoyl]-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoic acid	分子量：541.4 密度：N/A 沸点：N/A 熔点：N/A	2171719-30-3	C₂₆H₂₂BrFN₂O₅