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
7-tert-butyl 3-chloromethyl 2-(propan-2-yl)-5H,6H,7H,8H-imidazo[1,2-a]pyrazine-3,7-dicarboxylate	7-tert-butyl 3-chloromethyl 2-(propan-2-yl)-5H,6H,7H,8H-imidazo[1,2-a]pyrazine-3,7-dicarboxylate	分子量：357.8 密度：N/A 沸点：N/A 熔点：N/A	2137753-44-5	C₁₆H₂₄ClN₃O₄
7-tert-butyl 3-chloromethyl 2-(2-methylpropyl)-5H,6H,7H,8H-imidazo[1,2-a]pyrazine-3,7-dicarboxylate	7-tert-butyl 3-chloromethyl 2-(2-methylpropyl)-5H,6H,7H,8H-imidazo[1,2-a]pyrazine-3,7-dicarboxylate	分子量：371.9 密度：N/A 沸点：N/A 熔点：N/A	2137588-83-9	C₁₇H₂₆ClN₃O₄
3-(Trifluoromethyl)-1-benzothiophene-4-carbaldehyde	3-(Trifluoromethyl)-1-benzothiophene-4-carbaldehyde	分子量：230.21 密度：N/A 沸点：N/A 熔点：N/A	2244080-11-1	C₁₀H₅F₃OS
Methyl (1S,5R)-5-amino-3,3-difluorocyclohexane-1-carboxylate	Methyl (1S,5R)-5-amino-3,3-difluorocyclohexane-1-carboxylate	分子量：193.19 密度：N/A 沸点：N/A 熔点：N/A	2227198-07-2	C₈H₁₃F₂NO₂
2,2'-(Propane-2,2-diyl)bis(4-cyclohexyl-4,5-dihydrooxazole)	2,2'-(Propane-2,2-diyl)bis(4-cyclohexyl-4,5-dihydrooxazole)	分子量：346.5 密度：N/A 沸点：N/A 熔点：N/A	1312953-67-5	C₂₁H₃₄N₂O₂
1-[(3-{[(Tert-butoxy)carbonyl]amino}-4-hydroxyphenyl)methyl]cyclopropane-1-carboxylic acid	1-[(3-{[(Tert-butoxy)carbonyl]amino}-4-hydroxyphenyl)methyl]cyclopropane-1-carboxylic acid	分子量：307.34 密度：N/A 沸点：N/A 熔点：N/A	2229322-06-7	C₁₆H₂₁NO₅
(S)-8-(3-Bromophenyl)-9a-phenyl-9,9a-dihydropyrido[1,2-a]indole-6,10-dione	(S)-8-(3-Bromophenyl)-9a-phenyl-9,9a-dihydropyrido[1,2-a]indole-6,10-dione	分子量：430.3 密度：N/A 沸点：N/A 熔点：N/A	2368851-52-7	C₂₄H₁₆BrNO₂
(R)-1-(3-Fluoro-4-(trifluoromethyl)phenyl)but-3-en-1-amine	(R)-1-(3-Fluoro-4-(trifluoromethyl)phenyl)but-3-en-1-amine	分子量：233.20 密度：N/A 沸点：N/A 熔点：N/A	1270190-32-3	C₁₁H₁₁F₄N
3-(Ethylthio)propan-1-amine hydrochloride	3-(Ethylthio)propan-1-amine hydrochloride	分子量：155.69 密度：N/A 沸点：N/A 熔点：N/A	83708-40-1	C₅H₁₄ClNS
(2S)-1-(3-methylpyridin-4-yl)propan-2-amine	(2S)-1-(3-methylpyridin-4-yl)propan-2-amine	分子量：150.22 密度：N/A 沸点：N/A 熔点：N/A	1336504-17-6	C₉H₁₄N₂
3-[(4,4-Dimethylcyclohexyl)oxy]piperidine	3-[(4,4-Dimethylcyclohexyl)oxy]piperidine	分子量：211.34 密度：N/A 沸点：N/A 熔点：N/A	2144249-49-8	C₁₃H₂₅NO
1-(But-3-yn-1-yl)-3-(methylsulfanyl)benzene	1-(But-3-yn-1-yl)-3-(methylsulfanyl)benzene	分子量：176.28 密度：N/A 沸点：N/A 熔点：N/A	2228237-47-4	C₁₁H₁₂S
1-(3-Bromoprop-1-en-2-yl)-2-(propan-2-yloxy)benzene	1-(3-Bromoprop-1-en-2-yl)-2-(propan-2-yloxy)benzene	分子量：255.15 密度：N/A 沸点：N/A 熔点：N/A	2229196-46-5	C₁₂H₁₅BrO
N-(2-(Dimethylamino)ethyl)-1-hydroxy-1,3-dihydrobenzo[c][1,2]oxaborole-6-carboxamide	N-(2-(Dimethylamino)ethyl)-1-hydroxy-1,3-dihydrobenzo[c][1,2]oxaborole-6-carboxamide	分子量：248.09 密度：N/A 沸点：N/A 熔点：N/A	1800311-07-2	C₁₂H₁₇BN₂O₃
1-(3-oxetanylmethyl)-1H-Pyrazole-5-carboxylic acid	1-(3-oxetanylmethyl)-1H-Pyrazole-5-carboxylic acid	分子量：182.18 密度：N/A 沸点：N/A 熔点：N/A	2751743-58-3	C₈H₁₀N₂O₃
tert-Butyl (4-cyano-2,2-dimethylpiperidin-4-yl)carbamate	tert-Butyl (4-cyano-2,2-dimethylpiperidin-4-yl)carbamate	分子量：253.34 密度：N/A 沸点：N/A 熔点：N/A	2023809-03-0	C₁₃H₂₃N₃O₂
tert-Butyl 3-(3-bromopropyl)-1H-indole-1-carboxylate	tert-Butyl 3-(3-bromopropyl)-1H-indole-1-carboxylate	分子量：338.24 密度：N/A 沸点：N/A 熔点：N/A	2376838-87-6	C₁₆H₂₀BrNO₂
3-Ethoxy-1-isocyanatobutane	3-Ethoxy-1-isocyanatobutane	分子量：143.18 密度：N/A 沸点：N/A 熔点：N/A	2649046-92-2	C₇H₁₃NO₂
2,2-dimethyl-3-[1-(propan-2-yl)-1H-pyrazol-4-yl]propan-1-amine	2,2-dimethyl-3-[1-(propan-2-yl)-1H-pyrazol-4-yl]propan-1-amine	分子量：195.30 密度：N/A 沸点：N/A 熔点：N/A	2228398-37-4	C₁₁H₂₁N₃
tert-Butyl 6-acetyl-4-fluoro-3,4-dihydroquinoline-1(2H)-carboxylate	tert-Butyl 6-acetyl-4-fluoro-3,4-dihydroquinoline-1(2H)-carboxylate	分子量：293.33 密度：N/A 沸点：N/A 熔点：N/A	2411634-63-2	C₁₆H₂₀FNO₃
4,4-Dimethyl-2-oxo-1,2,3,4-tetrahydroquinazoline-6-carbonitrile	4,4-Dimethyl-2-oxo-1,2,3,4-tetrahydroquinazoline-6-carbonitrile	分子量：201.22 密度：N/A 沸点：N/A 熔点：N/A	2110782-35-7	C₁₁H₁₁N₃O
2,3,4,5-Tetrafluoro-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline	2,3,4,5-Tetrafluoro-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline	分子量：291.05 密度：N/A 沸点：N/A 熔点：N/A	2657617-90-6	C₁₂H₁₄BF₄NO₂
5-(2-Chloro-3,6-difluorophenyl)-1,3-oxazol-2-amine	5-(2-Chloro-3,6-difluorophenyl)-1,3-oxazol-2-amine	分子量：230.60 密度：N/A 沸点：N/A 熔点：N/A	2228327-26-0	C₉H₅ClF₂N₂O
(4S)-2-(aminomethyl)-3,4-dihydro-2H-1-benzopyran-4-amine	(4S)-2-(aminomethyl)-3,4-dihydro-2H-1-benzopyran-4-amine	分子量：178.23 密度：N/A 沸点：N/A 熔点：N/A	2137427-17-7	C₁₀H₁₄N₂O
2,6-Difluoro-3-(3,4,5-trichlorophenyl)aniline	2,6-Difluoro-3-(3,4,5-trichlorophenyl)aniline	分子量：308.5 密度：N/A 沸点：N/A 熔点：N/A	2137852-71-0	C₁₂H₆Cl₃F₂N
3-Methyl-3-(5-nitropyridin-2-yl)butan-1-amine	3-Methyl-3-(5-nitropyridin-2-yl)butan-1-amine	分子量：209.24 密度：N/A 沸点：N/A 熔点：N/A	2229161-71-9	C₁₀H₁₅N₃O₂
3-[(1S)-1-hydroxyethyl]-4-nitrophenol	3-[(1S)-1-hydroxyethyl]-4-nitrophenol	分子量：183.16 密度：N/A 沸点：N/A 熔点：N/A	2227763-30-4	C₈H₉NO₄
5-Iodo-6-(trifluoromethyl)pyridazin-3-amine	5-Iodo-6-(trifluoromethyl)pyridazin-3-amine	分子量：289.00 密度：N/A 沸点：N/A 熔点：N/A	2839748-56-8	C₅H₃F₃IN₃
2-Bromo-4-chloro-6-fluorobenzene-1-sulfonyl fluoride	2-Bromo-4-chloro-6-fluorobenzene-1-sulfonyl fluoride	分子量：291.50 密度：N/A 沸点：N/A 熔点：N/A	2764018-90-6	C₆H₂BrClF₂O₂S
7,8-Dimethyl-octahydropyrrolo[1,2-a]piperazin-6-one	7,8-Dimethyl-octahydropyrrolo[1,2-a]piperazin-6-one	分子量：168.24 密度：N/A 沸点：N/A 熔点：N/A	2138100-27-1	C₉H₁₆N₂O
5-Oxa-2,12-diazadispiro[3.1.3^{6}.3^{4}]dodecane	5-Oxa-2,12-diazadispiro[3.1.3^{6}.3^{4}]dodecane	分子量：168.24 密度：N/A 沸点：N/A 熔点：N/A	2166987-85-3	C₉H₁₆N₂O
3-(4-Cyanothiophen-2-yl)-3,3-difluoropropanoic acid	3-(4-Cyanothiophen-2-yl)-3,3-difluoropropanoic acid	分子量：217.19 密度：N/A 沸点：N/A 熔点：N/A	2229282-65-7	C₈H₅F₂NO₂S
1-[(4,5,6,7-tetrahydro-1H-indol-2-yl)methyl]cyclopropane-1-carboxylic acid	1-[(4,5,6,7-tetrahydro-1H-indol-2-yl)methyl]cyclopropane-1-carboxylic acid	分子量：219.28 密度：N/A 沸点：N/A 熔点：N/A	2228203-37-8	C₁₃H₁₇NO₂
2-[1-(2,3-Dihydro-1-benzofuran-5-yl)cyclopropyl]-2-hydroxyacetic acid	2-[1-(2,3-Dihydro-1-benzofuran-5-yl)cyclopropyl]-2-hydroxyacetic acid	分子量：234.25 密度：N/A 沸点：N/A 熔点：N/A	2228723-34-8	C₁₃H₁₄O₄
2-(4-Ethoxy-2-methylphenyl)-3-methylbutanoic acid	2-(4-Ethoxy-2-methylphenyl)-3-methylbutanoic acid	分子量：236.31 密度：N/A 沸点：N/A 熔点：N/A	2229499-52-7	C₁₄H₂₀O₃
2-hydroxy-2-[1-(1-methyl-1H-pyrazol-3-yl)cyclopropyl]acetic acid	2-hydroxy-2-[1-(1-methyl-1H-pyrazol-3-yl)cyclopropyl]acetic acid	分子量：196.20 密度：N/A 沸点：N/A 熔点：N/A	2229262-27-3	C₉H₁₂N₂O₃
2-Hydroxy-3-(3-methoxy-1,2-oxazol-5-yl)propanoic acid	2-Hydroxy-3-(3-methoxy-1,2-oxazol-5-yl)propanoic acid	分子量：187.15 密度：N/A 沸点：N/A 熔点：N/A	2229022-43-7	C₇H₉NO₅
4-{3-[(Dimethylamino)methyl]-4-hydroxyphenyl}butanoic acid	4-{3-[(Dimethylamino)methyl]-4-hydroxyphenyl}butanoic acid	分子量：237.29 密度：N/A 沸点：N/A 熔点：N/A	2229502-16-1	C₁₃H₁₉NO₃
1-[6-(Trifluoromethyl)pyridin-3-yl]cyclobutane-1-carboxylic acid	1-[6-(Trifluoromethyl)pyridin-3-yl]cyclobutane-1-carboxylic acid	分子量：245.20 密度：N/A 沸点：N/A 熔点：N/A	2228506-25-8	C₁₁H₁₀F₃NO₂
2-hydroxy-2-(1-{5H,6H,7H,8H-imidazo[1,2-a]pyridin-2-yl}cyclopropyl)acetic acid	2-hydroxy-2-(1-{5H,6H,7H,8H-imidazo[1,2-a]pyridin-2-yl}cyclopropyl)acetic acid	分子量：236.27 密度：N/A 沸点：N/A 熔点：N/A	2228554-52-5	C₁₂H₁₆N₂O₃
2-[4-(1-Ethoxyethenyl)phenyl]acetic acid	2-[4-(1-Ethoxyethenyl)phenyl]acetic acid	分子量：206.24 密度：N/A 沸点：N/A 熔点：N/A	2137985-33-0	C₁₂H₁₄O₃
5-Chloro-2-(4-methylpiperidin-1-yl)pyrimidine-4-carboxylic acid	5-Chloro-2-(4-methylpiperidin-1-yl)pyrimidine-4-carboxylic acid	分子量：255.70 密度：N/A 沸点：N/A 熔点：N/A	2172232-89-0	C₁₁H₁₄ClN₃O₂
Ethyl 2-[4,4-bis(hydroxymethyl)piperidin-1-yl]-2-oxoacetate	Ethyl 2-[4,4-bis(hydroxymethyl)piperidin-1-yl]-2-oxoacetate	分子量：245.27 密度：N/A 沸点：N/A 熔点：N/A	2137750-29-7	C₁₁H₁₉NO₅
Ethyl 4-cyano-5-(diethylamino)-1,3-oxazole-2-carboxylate	Ethyl 4-cyano-5-(diethylamino)-1,3-oxazole-2-carboxylate	分子量：237.25 密度：N/A 沸点：N/A 熔点：N/A	2112808-64-5	C₁₁H₁₅N₃O₃
2-Oxo-2-(2-sulfanylidene-1,3-thiazinan-3-yl)ethyl acetate	2-Oxo-2-(2-sulfanylidene-1,3-thiazinan-3-yl)ethyl acetate	分子量：233.3 密度：N/A 沸点：N/A 熔点：N/A	2138068-58-1	C₈H₁₁NO₃S₂
Methyl 2-methyl-5-(2-methyloxiran-2-yl)furan-3-carboxylate	Methyl 2-methyl-5-(2-methyloxiran-2-yl)furan-3-carboxylate	分子量：196.20 密度：N/A 沸点：N/A 熔点：N/A	2228462-87-9	C₁₀H₁₂O₄
Methyl 5-(2-oxo-1,3-oxazolidin-4-yl)thiophene-2-carboxylate	Methyl 5-(2-oxo-1,3-oxazolidin-4-yl)thiophene-2-carboxylate	分子量：227.24 密度：N/A 沸点：N/A 熔点：N/A	2229328-85-0	C₉H₉NO₄S
2,6-Di(2-hydroxyphenyl)-4-(3-fluorophenyl)pyridine	2,6-Di(2-hydroxyphenyl)-4-(3-fluorophenyl)pyridine	分子量：357.4 密度：N/A 沸点：N/A 熔点：N/A	2761845-88-7	C₂₃H₁₆FNO₂
4-[2-(Morpholin-4-yl)-1,3-thiazol-5-yl]but-3-en-2-one	4-[2-(Morpholin-4-yl)-1,3-thiazol-5-yl]but-3-en-2-one	分子量：238.31 密度：N/A 沸点：N/A 熔点：N/A	2229641-53-4	C₁₁H₁₄N₂O₂S
1-(8-Bromo-6-cyclopropylimidazo[1,2-a]pyridin-2-yl)ethan-1-ol	1-(8-Bromo-6-cyclopropylimidazo[1,2-a]pyridin-2-yl)ethan-1-ol	分子量：281.15 密度：N/A 沸点：N/A 熔点：N/A	2839445-55-3	C₁₂H₁₃BrN₂O