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-(4-fluorophenyl)-N-[(methoxyimino)methyl]-1-oxo-1,2-dihydro-4-isoquinolinecarboxamide	2-(4-fluorophenyl)-N-[(methoxyimino)methyl]-1-oxo-1,2-dihydro-4-isoquinolinecarboxamide	分子量：339.3 密度：N/A 沸点：N/A 熔点：N/A	339106-97-7	C₁₈H₁₄FN₃O₃
2-(Ethylsulfanyl)-7,9-dimethylpyrido[3',2':4,5]thieno[3,2-d]pyrimidin-4-ol	2-(Ethylsulfanyl)-7,9-dimethylpyrido[3',2':4,5]thieno[3,2-d]pyrimidin-4-ol	分子量：291.4 密度：N/A 沸点：N/A 熔点：N/A	672950-80-0	C₁₃H₁₃N₃OS₂
6-Amino-2-methylsulfanyl-5-((3S,4R,5R)-3,4,5-trihydroxy-tetrahydro-pyran-2-ylamino)-3H-pyrimidin-4-one	6-Amino-2-methylsulfanyl-5-((3S,4R,5R)-3,4,5-trihydroxy-tetrahydro-pyran-2-ylamino)-3H-pyrimidin-4-one	分子量：304.33 密度：N/A 沸点：N/A 熔点：N/A	328553-64-6	C₁₀H₁₆N₄O₅S
4(1H)-Pyrimidinone, 6-amino-5-(beta-L-arabinopyranosylamino)-2-(methylthio)-	4(1H)-Pyrimidinone, 6-amino-5-(beta-L-arabinopyranosylamino)-2-(methylthio)-	分子量：304.33 密度：N/A 沸点：N/A 熔点：N/A	328553-65-7	C₁₀H₁₆N₄O₅S
3A-amino-hexahydro-5lambda6-thieno[3,4-c]furan-5,5-dione	3A-amino-hexahydro-5lambda6-thieno[3,4-c]furan-5,5-dione	分子量：177.22 密度：N/A 沸点：N/A 熔点：N/A	2059987-51-6	C₆H₁₁NO₃S
2-(((2-aminophenyl)thio)methyl)quinazolin-4(3H)-one	2-(((2-aminophenyl)thio)methyl)quinazolin-4(3H)-one	分子量：283.4 密度：N/A 沸点：N/A 熔点：N/A	657350-40-8	C₁₅H₁₃N₃OS
2-({[2-(4-Hexanoylpiperazin-1-yl)ethyl]amino}methylidene)-5-(thiophen-2-yl)cyclohexane-1,3-dione	2-({[2-(4-Hexanoylpiperazin-1-yl)ethyl]amino}methylidene)-5-(thiophen-2-yl)cyclohexane-1,3-dione	分子量：431.6 密度：N/A 沸点：N/A 熔点：N/A	586986-12-1	C₂₃H₃₃N₃O₃S
4-(4-Chlorophenyl)-3-cyano-6-oxo-5-(1-pyridiniumyl)-1,4,5,6-tetrahydro-2-pyridinylsulfide	4-(4-Chlorophenyl)-3-cyano-6-oxo-5-(1-pyridiniumyl)-1,4,5,6-tetrahydro-2-pyridinylsulfide	分子量：341.8 密度：N/A 沸点：N/A 熔点：N/A	338786-25-7	C₁₇H₁₂ClN₃OS
4-fluoro-N-(4-oxo-3,4,5,6,7,8-hexahydro-2-quinazolinyl)benzenecarboxamide	4-fluoro-N-(4-oxo-3,4,5,6,7,8-hexahydro-2-quinazolinyl)benzenecarboxamide	分子量：287.29 密度：N/A 沸点：N/A 熔点：N/A	338401-47-1	C₁₅H₁₄FN₃O₂
N-(2-ethoxyphenyl)-2-((6-oxo-4-phenyl-1,6-dihydropyrimidin-2-yl)thio)acetamide	N-(2-ethoxyphenyl)-2-((6-oxo-4-phenyl-1,6-dihydropyrimidin-2-yl)thio)acetamide	分子量：381.4 密度：N/A 沸点：N/A 熔点：N/A	518017-86-2	C₂₀H₁₉N₃O₃S
N-(4-ethoxyphenyl)-2-((5-oxo-4,5-dihydro-1,2,4-triazin-3-yl)thio)acetamide	N-(4-ethoxyphenyl)-2-((5-oxo-4,5-dihydro-1,2,4-triazin-3-yl)thio)acetamide	分子量：306.34 密度：N/A 沸点：N/A 熔点：N/A	872628-48-3	C₁₃H₁₄N₄O₃S
1,3-Dibenzyl-5-(benzylcarbamoyl)triazol-3-ium-4-olate	1,3-Dibenzyl-5-(benzylcarbamoyl)triazol-3-ium-4-olate	分子量：398.5 密度：N/A 沸点：N/A 熔点：N/A	6127-79-3	C₂₄H₂₂N₄O₂
2-amino-5-(4-ethylphenyl)-5,8-dihydropyrido[2,3-d]pyrimidine-4,7(3H,6H)-dione	2-amino-5-(4-ethylphenyl)-5,8-dihydropyrido[2,3-d]pyrimidine-4,7(3H,6H)-dione	分子量：284.31 密度：N/A 沸点：N/A 熔点：N/A	878437-09-3	C₁₅H₁₆N₄O₂
Methyl 2-(ethylthio)-7-methyl-4-oxo-5-pyridin-3-yl-3,4,5,8-tetrahydropyrido[2,3-d]pyrimidine-6-carboxylate	Methyl 2-(ethylthio)-7-methyl-4-oxo-5-pyridin-3-yl-3,4,5,8-tetrahydropyrido[2,3-d]pyrimidine-6-carboxylate	分子量：358.4 密度：N/A 沸点：N/A 熔点：N/A	537004-70-9	C₁₇H₁₈N₄O₃S
Isopropyl 7-methyl-2-(methylthio)-4-oxo-5-(pyridin-4-yl)-3,4,5,8-tetrahydropyrido[2,3-d]pyrimidine-6-carboxylate	Isopropyl 7-methyl-2-(methylthio)-4-oxo-5-(pyridin-4-yl)-3,4,5,8-tetrahydropyrido[2,3-d]pyrimidine-6-carboxylate	分子量：372.4 密度：N/A 沸点：N/A 熔点：N/A	537045-88-8	C₁₈H₂₀N₄O₃S
(2E,5Z)-2-[(2-bromophenyl)imino]-5-(pyridin-3-ylmethylidene)-1,3-thiazolidin-4-one	(2E,5Z)-2-[(2-bromophenyl)imino]-5-(pyridin-3-ylmethylidene)-1,3-thiazolidin-4-one	分子量：360.2 密度：N/A 沸点：N/A 熔点：N/A	674818-05-4	C₁₅H₁₀BrN₃OS
(5Z)-2-{[4-chloro-2-(trifluoromethyl)phenyl]amino}-5-(pyridin-3-ylmethylidene)-1,3-thiazol-4(5H)-one	(5Z)-2-{[4-chloro-2-(trifluoromethyl)phenyl]amino}-5-(pyridin-3-ylmethylidene)-1,3-thiazol-4(5H)-one	分子量：383.8 密度：N/A 沸点：N/A 熔点：N/A	849032-08-2	C₁₆H₉ClF₃N₃OS
2-[[2-(2,5-Dichlorophenyl)-2-oxoethyl]thio]-6-propyl-4(3H)-pyrimidinone	2-[[2-(2,5-Dichlorophenyl)-2-oxoethyl]thio]-6-propyl-4(3H)-pyrimidinone	分子量：357.3 密度：N/A 沸点：N/A 熔点：N/A	721908-08-3	C₁₅H₁₄Cl₂N₂O₂S
2-{[4-(3-nitrophenyl)-1,3-thiazol-2-yl]amino}-6-(trifluoromethyl)-4(3H)-pyrimidinone	2-{[4-(3-nitrophenyl)-1,3-thiazol-2-yl]amino}-6-(trifluoromethyl)-4(3H)-pyrimidinone	分子量：383.31 密度：N/A 沸点：N/A 熔点：N/A	866142-60-1	C₁₄H₈F₃N₅O₃S
N-(3,5-bis(trifluoromethyl)phenyl)-2-(4-oxo(3-hydroquinazolin-2-ylthio))propanamide	N-(3,5-bis(trifluoromethyl)phenyl)-2-(4-oxo(3-hydroquinazolin-2-ylthio))propanamide	分子量：461.4 密度：N/A 沸点：N/A 熔点：N/A	1023836-94-3	C₁₉H₁₃F₆N₃O₂S
N-(4-amino-6-oxo-2-((2-oxo-2-(((tetrahydrofuran-2-yl)methyl)amino)ethyl)thio)-1,6-dihydropyrimidin-5-yl)thiophene-2-carboxamide	N-(4-amino-6-oxo-2-((2-oxo-2-(((tetrahydrofuran-2-yl)methyl)amino)ethyl)thio)-1,6-dihydropyrimidin-5-yl)thiophene-2-carboxamide	分子量：409.5 密度：N/A 沸点：N/A 熔点：N/A	868225-76-7	C₁₆H₁₉N₅O₄S₂
2-(Furan-2-YL)pyrazolo[1,5-C]quinazolin-5(6H)-one	2-(Furan-2-YL)pyrazolo[1,5-C]quinazolin-5(6H)-one	分子量：251.24 密度：N/A 沸点：N/A 熔点：N/A	178624-94-7	C₁₄H₉N₃O₂
1-Chloro-1-(2-(difluoromethyl)phenyl)propan-2-one	1-Chloro-1-(2-(difluoromethyl)phenyl)propan-2-one	分子量：218.63 密度：N/A 沸点：N/A 熔点：N/A	1803846-60-7	C₁₀H₉ClF₂O
1-(5-Amino-2-(bromomethyl)phenyl)-2-bromopropan-1-one	1-(5-Amino-2-(bromomethyl)phenyl)-2-bromopropan-1-one	分子量：321.01 密度：N/A 沸点：N/A 熔点：N/A	1806294-27-8	C₁₀H₁₁Br₂NO
1-(3-Chloro-2-(trifluoromethylthio)phenyl)hydrazine	1-(3-Chloro-2-(trifluoromethylthio)phenyl)hydrazine	分子量：242.65 密度：N/A 沸点：N/A 熔点：N/A	1803763-24-7	C₇H₆ClF₃N₂S
(2Z)-2-[(2,5-dimethoxyphenyl)imino]-7-hydroxy-N-(pyridin-2-yl)-2H-chromene-3-carboxamide	(2Z)-2-[(2,5-dimethoxyphenyl)imino]-7-hydroxy-N-(pyridin-2-yl)-2H-chromene-3-carboxamide	分子量：417.4 密度：N/A 沸点：N/A 熔点：N/A	1228170-69-1	C₂₃H₁₉N₃O₅
4-(1,3-benzothiazol-2-yl)-1-(2-hydroxypropyl)-5-imino-2H-pyrrol-3-ol	4-(1,3-benzothiazol-2-yl)-1-(2-hydroxypropyl)-5-imino-2H-pyrrol-3-ol	分子量：289.35 密度：N/A 沸点：N/A 熔点：N/A	851176-34-6	C₁₄H₁₅N₃O₂S
1-(4-oxo-3H-quinazolin-2-yl)ethyl 5-methylfuran-2-carboxylate	1-(4-oxo-3H-quinazolin-2-yl)ethyl 5-methylfuran-2-carboxylate	分子量：298.29 密度：N/A 沸点：N/A 熔点：N/A	851399-69-4	C₁₆H₁₄N₂O₄
N-[(2,4-dichlorobenzyl)oxy]-N-[(methoxyimino)methyl]urea	N-[(2,4-dichlorobenzyl)oxy]-N-[(methoxyimino)methyl]urea	分子量：292.12 密度：N/A 沸点：N/A 熔点：N/A	338395-17-8	C₁₀H₁₁Cl₂N₃O₃
1-[(2,6-Dichlorophenyl)methoxy]-3-(methoxyiminomethyl)urea	1-[(2,6-Dichlorophenyl)methoxy]-3-(methoxyiminomethyl)urea	分子量：292.12 密度：N/A 沸点：N/A 熔点：N/A	338395-28-1	C₁₀H₁₁Cl₂N₃O₃
4-(4-ethoxyanilino)-5-[(4-oxocyclohexa-2,5-dien-1-ylidene)methyl]-3H-1,3-thiazol-2-one	4-(4-ethoxyanilino)-5-[(4-oxocyclohexa-2,5-dien-1-ylidene)methyl]-3H-1,3-thiazol-2-one	分子量：340.4 密度：N/A 沸点：N/A 熔点：N/A	469871-55-4	C₁₈H₁₆N₂O₃S
(5Z)-5-[[4-(dimethylamino)phenyl]methylidene]-4-(4-methoxyanilino)-2-thiazolone	(5Z)-5-[[4-(dimethylamino)phenyl]methylidene]-4-(4-methoxyanilino)-2-thiazolone	分子量：353.4 密度：N/A 沸点：N/A 熔点：N/A	1164451-66-4	C₁₉H₁₉N₃O₂S
5-amino-4-[4-(4-chlorophenyl)-1,3-thiazol-2-yl]-1-(3-methylbutyl)-1,2-dihydro-3H-pyrrol-3-one	5-amino-4-[4-(4-chlorophenyl)-1,3-thiazol-2-yl]-1-(3-methylbutyl)-1,2-dihydro-3H-pyrrol-3-one	分子量：361.9 密度：N/A 沸点：N/A 熔点：N/A	380446-38-8	C₁₈H₂₀ClN₃OS
8-(4-Fluorophenyl)-9-(4-methoxyphenyl)-4,9-dihydrotetrazolo[1',5':1,2]pyrimido[4,5-d]pyridazin-5-ol	8-(4-Fluorophenyl)-9-(4-methoxyphenyl)-4,9-dihydrotetrazolo[1',5':1,2]pyrimido[4,5-d]pyridazin-5-ol	分子量：391.4 密度：N/A 沸点：N/A 熔点：N/A	893772-24-2	C₁₉H₁₄FN₇O₂
6-hexyl-2-imino-3-(4-phenylthiazol-2-yl)-2H-chromen-7-ol	6-hexyl-2-imino-3-(4-phenylthiazol-2-yl)-2H-chromen-7-ol	分子量：404.5 密度：N/A 沸点：N/A 熔点：N/A	320741-53-5	C₂₄H₂₄N₂O₂S
2-[(1,1-Dioxido-1,2-benzisothiazol-3-yl)amino]-3-methylbutanoic acid	2-[(1,1-Dioxido-1,2-benzisothiazol-3-yl)amino]-3-methylbutanoic acid	分子量：282.32 密度：N/A 沸点：N/A 熔点：N/A	1396968-55-0	C₁₂H₁₄N₂O₄S
2-[(1,1-Dioxido-1,2-benzisothiazol-3-yl)amino]-4-(methylthio)butanoic acid	2-[(1,1-Dioxido-1,2-benzisothiazol-3-yl)amino]-4-(methylthio)butanoic acid	分子量：314.4 密度：N/A 沸点：N/A 熔点：N/A	1396999-66-8	C₁₂H₁₄N₂O₄S₂
3-Cyclohexene-1,2-diol, 3-ethyl-	3-Cyclohexene-1,2-diol, 3-ethyl-	分子量：142.20 密度：N/A 沸点：N/A 熔点：N/A	1823569-27-2	C₈H₁₄O₂
2-Bromo-6-[(piperidin-3-yl)methyl]pyridine	2-Bromo-6-[(piperidin-3-yl)methyl]pyridine	分子量：255.15 密度：N/A 沸点：N/A 熔点：N/A	1337201-61-2	C₁₁H₁₅BrN₂
5,6,7,8-Tetrahydro-2-(methoxymethyl)pyrido[3,4-d]pyrimidine	5,6,7,8-Tetrahydro-2-(methoxymethyl)pyrido[3,4-d]pyrimidine	分子量：179.22 密度：N/A 沸点：N/A 熔点：N/A	1159882-44-6	C₉H₁₃N₃O
2-(1-Chloro-2-oxopropyl)-5-hydroxybenzoic acid	2-(1-Chloro-2-oxopropyl)-5-hydroxybenzoic acid	分子量：228.63 密度：N/A 沸点：N/A 熔点：N/A	1805731-66-1	C₁₀H₉ClO₄
2-Amino-3-(bicyclo[2.2.2]octan-1-yl)propanoic acid	2-Amino-3-(bicyclo[2.2.2]octan-1-yl)propanoic acid	分子量：197.27 密度：N/A 沸点：N/A 熔点：N/A	1822465-67-7	C₁₁H₁₉NO₂
2-Amino-3-(6-bromopyridin-3-yl)propan-1-ol	2-Amino-3-(6-bromopyridin-3-yl)propan-1-ol	分子量：231.09 密度：N/A 沸点：N/A 熔点：N/A	1379149-84-4	C₈H₁₁BrN₂O
2-(2-Amino-3-hydroxypropyl)-6-bromo-4-chlorophenol	2-(2-Amino-3-hydroxypropyl)-6-bromo-4-chlorophenol	分子量：280.54 密度：N/A 沸点：N/A 熔点：N/A	1380141-03-6	C₉H₁₁BrClNO₂
Methyl 3-cyclopentylpyrrolidine-3-carboxylate	Methyl 3-cyclopentylpyrrolidine-3-carboxylate	分子量：197.27 密度：N/A 沸点：N/A 熔点：N/A	1823815-61-7	C₁₁H₁₉NO₂
2-(2-Bromopropanoyl)-6-chlorobenzoic acid	2-(2-Bromopropanoyl)-6-chlorobenzoic acid	分子量：291.52 密度：N/A 沸点：N/A 熔点：N/A	1806632-98-3	C₁₀H₈BrClO₃
2-[2-(Methylamino)-4-oxo-4,5-dihydro-1,3-thiazol-5-yl]acetic acid	2-[2-(Methylamino)-4-oxo-4,5-dihydro-1,3-thiazol-5-yl]acetic acid	分子量：188.21 密度：N/A 沸点：N/A 熔点：N/A	56787-98-5	C₆H₈N₂O₃S
2-Methoxy-1-(3-methylazetidin-3-yl)ethan-1-one	2-Methoxy-1-(3-methylazetidin-3-yl)ethan-1-one	分子量：143.18 密度：N/A 沸点：N/A 熔点：N/A	1935517-26-2	C₇H₁₃NO₂
1-(3-Methylazetidin-3-yl)pent-4-yn-1-one	1-(3-Methylazetidin-3-yl)pent-4-yn-1-one	分子量：151.21 密度：N/A 沸点：N/A 熔点：N/A	1935401-27-6	C₉H₁₃NO
2,2-Dimethyl-1-(3-methylazetidin-3-yl)propan-1-one	2,2-Dimethyl-1-(3-methylazetidin-3-yl)propan-1-one	分子量：155.24 密度：N/A 沸点：N/A 熔点：N/A	1934711-41-7	C₉H₁₇NO