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-(Butan-2-yl)-2-methylcyclohexane-1,3-dione	2-(Butan-2-yl)-2-methylcyclohexane-1,3-dione	分子量：182.26 密度：N/A 沸点：N/A 熔点：N/A	2137721-42-5	C₁₁H₁₈O₂
3-Amino-2-methyl-2-(pyrazin-2-yl)propan-1-ol	3-Amino-2-methyl-2-(pyrazin-2-yl)propan-1-ol	分子量：167.21 密度：N/A 沸点：N/A 熔点：N/A	2228260-25-9	C₈H₁₃N₃O
5-(1-methoxyethyl)-1-(3-methoxypropyl)-1H-1,2,3-triazole-4-carboxamide	5-(1-methoxyethyl)-1-(3-methoxypropyl)-1H-1,2,3-triazole-4-carboxamide	分子量：242.28 密度：N/A 沸点：N/A 熔点：N/A	2172053-09-5	C₁₀H₁₈N₄O₃
1-[5-(2-Hydroxyethyl)-4-methyl-1,3-thiazol-2-yl]pentan-1-one	1-[5-(2-Hydroxyethyl)-4-methyl-1,3-thiazol-2-yl]pentan-1-one	分子量：227.33 密度：N/A 沸点：N/A 熔点：N/A	2167523-45-5	C₁₁H₁₇NO₂S
(1R,4S,5S)-5-acetamidobicyclo[2.1.0]pentane-5-carboxylic acid	(1R,4S,5S)-5-acetamidobicyclo[2.1.0]pentane-5-carboxylic acid	分子量：169.18 密度：N/A 沸点：N/A 熔点：N/A	2763886-09-3	C₈H₁₁NO₃
N-[2-chloro-5-(trifluoromethyl)phenyl]-2-[4-(thiomorpholine-4-carbonyl)piperidin-1-yl]acetamide	N-[2-chloro-5-(trifluoromethyl)phenyl]-2-[4-(thiomorpholine-4-carbonyl)piperidin-1-yl]acetamide	分子量：449.9 密度：N/A 沸点：N/A 熔点：N/A	2877644-86-3	C₁₉H₂₃ClF₃N₃O₂S
N-[2-chloro-5-(trifluoromethyl)phenyl]-2-{3-[(pyrazin-2-yloxy)methyl]pyrrolidin-1-yl}acetamide	N-[2-chloro-5-(trifluoromethyl)phenyl]-2-{3-[(pyrazin-2-yloxy)methyl]pyrrolidin-1-yl}acetamide	分子量：414.8 密度：N/A 沸点：N/A 熔点：N/A	2877664-49-6	C₁₈H₁₈ClF₃N₄O₂
3,3-Difluorobutanethioamide	3,3-Difluorobutanethioamide	分子量：139.17 密度：N/A 沸点：N/A 熔点：N/A	2228422-60-2	C₄H₇F₂NS
5-chloro-2-ethoxy-N,N-bis(2-methylpropyl)benzene-1-sulfonamide	5-chloro-2-ethoxy-N,N-bis(2-methylpropyl)benzene-1-sulfonamide	分子量：347.9 密度：N/A 沸点：N/A 熔点：N/A	2870919-51-8	C₁₆H₂₆ClNO₃S
N-(3-fluoro-4-methylphenyl)-2-{4-[(5-fluoropyridin-3-yl)methyl]piperazin-1-yl}acetamide	N-(3-fluoro-4-methylphenyl)-2-{4-[(5-fluoropyridin-3-yl)methyl]piperazin-1-yl}acetamide	分子量：360.4 密度：N/A 沸点：N/A 熔点：N/A	2877666-46-9	C₁₉H₂₂F₂N₄O
N-(3-fluoro-4-methylphenyl)-2-{4-[(3-methylpyridin-2-yl)methyl]piperazin-1-yl}acetamide	N-(3-fluoro-4-methylphenyl)-2-{4-[(3-methylpyridin-2-yl)methyl]piperazin-1-yl}acetamide	分子量：356.4 密度：N/A 沸点：N/A 熔点：N/A	2877688-29-2	C₂₀H₂₅FN₄O
2-{3-[(4-bromo-1H-pyrazol-1-yl)methyl]azetidin-1-yl}-3-methyl-3H,4H-thieno[3,2-d]pyrimidin-4-one	2-{3-[(4-bromo-1H-pyrazol-1-yl)methyl]azetidin-1-yl}-3-methyl-3H,4H-thieno[3,2-d]pyrimidin-4-one	分子量：380.27 密度：N/A 沸点：N/A 熔点：N/A	2877674-63-8	C₁₄H₁₄BrN₅OS
6-chloro-2-{4-[6-(3,5-dimethyl-1H-pyrazol-1-yl)-2-methylpyrimidin-4-yl]piperazin-1-yl}-1,3-benzoxazole	6-chloro-2-{4-[6-(3,5-dimethyl-1H-pyrazol-1-yl)-2-methylpyrimidin-4-yl]piperazin-1-yl}-1,3-benzoxazole	分子量：423.9 密度：N/A 沸点：N/A 熔点：N/A	2877659-07-7	C₂₁H₂₂ClN₇O
5-chloro-2-{4-[6-(3,5-dimethyl-1H-pyrazol-1-yl)-2-methylpyrimidin-4-yl]piperazin-1-yl}-1,3-benzoxazole	5-chloro-2-{4-[6-(3,5-dimethyl-1H-pyrazol-1-yl)-2-methylpyrimidin-4-yl]piperazin-1-yl}-1,3-benzoxazole	分子量：423.9 密度：N/A 沸点：N/A 熔点：N/A	2877702-58-2	C₂₁H₂₂ClN₇O
N-(3-methoxyphenyl)-2-{4-[(3-methylpyridin-2-yl)methyl]piperazin-1-yl}acetamide	N-(3-methoxyphenyl)-2-{4-[(3-methylpyridin-2-yl)methyl]piperazin-1-yl}acetamide	分子量：354.4 密度：N/A 沸点：N/A 熔点：N/A	2877659-35-1	C₂₀H₂₆N₄O₂
5-Bromo-3-chloro-2-(3-{[1,2,4]triazolo[4,3-a]pyridin-3-yl}azetidin-1-yl)pyridine	5-Bromo-3-chloro-2-(3-{[1,2,4]triazolo[4,3-a]pyridin-3-yl}azetidin-1-yl)pyridine	分子量：364.63 密度：N/A 沸点：N/A 熔点：N/A	2877751-39-6	C₁₄H₁₁BrClN₅
2-methoxy-N,N-bis(2-methylpropyl)-5-(propan-2-yl)benzene-1-sulfonamide	2-methoxy-N,N-bis(2-methylpropyl)-5-(propan-2-yl)benzene-1-sulfonamide	分子量：341.5 密度：N/A 沸点：N/A 熔点：N/A	2870958-59-9	C₁₈H₃₁NO₃S
N-(3-chloro-2-methylphenyl)-2-{4-[(3-methylpyridin-2-yl)methyl]piperazin-1-yl}acetamide	N-(3-chloro-2-methylphenyl)-2-{4-[(3-methylpyridin-2-yl)methyl]piperazin-1-yl}acetamide	分子量：372.9 密度：N/A 沸点：N/A 熔点：N/A	2877675-94-8	C₂₀H₂₅ClN₄O
3-{4-[6-(3-methyl-1H-pyrazol-1-yl)pyrimidin-4-yl]piperazin-1-yl}pyrazine-2-carbonitrile	3-{4-[6-(3-methyl-1H-pyrazol-1-yl)pyrimidin-4-yl]piperazin-1-yl}pyrazine-2-carbonitrile	分子量：347.4 密度：N/A 沸点：N/A 熔点：N/A	2877691-06-8	C₁₇H₁₇N₉
N-[2-chloro-5-(trifluoromethyl)phenyl]-2-(4-methanesulfonamidopiperidin-1-yl)acetamide	N-[2-chloro-5-(trifluoromethyl)phenyl]-2-(4-methanesulfonamidopiperidin-1-yl)acetamide	分子量：413.8 密度：N/A 沸点：N/A 熔点：N/A	2877645-32-2	C₁₅H₁₉ClF₃N₃O₃S
1-tert-butyl-4-(pyrrolidin-3-yloxy)-1H-pyrazole	1-tert-butyl-4-(pyrrolidin-3-yloxy)-1H-pyrazole	分子量：209.29 密度：N/A 沸点：N/A 熔点：N/A	2228273-72-9	C₁₁H₁₉N₃O
N-(4-ethylphenyl)-2-{4-[(3-methylpyridin-2-yl)methyl]piperazin-1-yl}acetamide	N-(4-ethylphenyl)-2-{4-[(3-methylpyridin-2-yl)methyl]piperazin-1-yl}acetamide	分子量：352.5 密度：N/A 沸点：N/A 熔点：N/A	2877708-24-0	C₂₁H₂₈N₄O
9H-Xanthene-9-carboxylic acid, 2-[[(1-methylethyl)amino]thioxomethyl]hydrazide	9H-Xanthene-9-carboxylic acid, 2-[[(1-methylethyl)amino]thioxomethyl]hydrazide	分子量：341.4 密度：N/A 沸点：N/A 熔点：N/A	87836-46-2	C₁₈H₁₉N₃O₂S
2-(4-{[(3-chloropyridin-4-yl)oxy]methyl}piperidin-1-yl)-N-(2,3-dihydro-1,4-benzodioxin-6-yl)acetamide	2-(4-{[(3-chloropyridin-4-yl)oxy]methyl}piperidin-1-yl)-N-(2,3-dihydro-1,4-benzodioxin-6-yl)acetamide	分子量：417.9 密度：N/A 沸点：N/A 熔点：N/A	2877691-12-6	C₂₁H₂₄ClN₃O₄
2-{[(Tert-butoxy)carbonyl]amino}-5-chloro-6-methylpyridine-3-carboxylic acid	2-{[(Tert-butoxy)carbonyl]amino}-5-chloro-6-methylpyridine-3-carboxylic acid	分子量：286.71 密度：N/A 沸点：N/A 熔点：N/A	2580223-36-3	C₁₂H₁₅ClN₂O₄
6-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1,2,4-triazine-5-carboxylic acid	6-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1,2,4-triazine-5-carboxylic acid	分子量：362.3 密度：N/A 沸点：N/A 熔点：N/A	2580240-57-7	C₁₉H₁₄N₄O₄
3-(7-(Aminomethyl)-1-oxoisoindolin-2-yl)piperidine-2,6-dione hydrochloride	3-(7-(Aminomethyl)-1-oxoisoindolin-2-yl)piperidine-2,6-dione hydrochloride	分子量：309.75 密度：N/A 沸点：N/A 熔点：N/A	2839138-80-4	C₁₄H₁₆ClN₃O₃
rac-(3'aR,6'aR)-hexahydrospiro[azetidine-3,1'-furo[3,4-c]pyrrole]-3'a-carboxylic acid	rac-(3'aR,6'aR)-hexahydrospiro[azetidine-3,1'-furo[3,4-c]pyrrole]-3'a-carboxylic acid	分子量：198.22 密度：N/A 沸点：N/A 熔点：N/A	2580093-26-9	C₉H₁₄N₂O₃
2,5-Diazaspiro[3.5]nonane-7-carboxylic acid	2,5-Diazaspiro[3.5]nonane-7-carboxylic acid	分子量：170.21 密度：N/A 沸点：N/A 熔点：N/A	2580208-56-4	C₈H₁₄N₂O₂
Methyl 2,5-diazaspiro[3.5]nonane-7-carboxylate	Methyl 2,5-diazaspiro[3.5]nonane-7-carboxylate	分子量：184.24 密度：N/A 沸点：N/A 熔点：N/A	2580239-94-5	C₉H₁₆N₂O₂
3a-amino-hexahydro-1H-2lambda6-thieno[3,4-c]pyrrole-2,2-dione	3a-amino-hexahydro-1H-2lambda6-thieno[3,4-c]pyrrole-2,2-dione	分子量：176.24 密度：N/A 沸点：N/A 熔点：N/A	2580239-83-2	C₆H₁₂N₂O₂S
5-{[(Benzyloxy)carbonyl]amino}-2-methoxybenzoic acid	5-{[(Benzyloxy)carbonyl]amino}-2-methoxybenzoic acid	分子量：301.29 密度：N/A 沸点：N/A 熔点：N/A	2352669-23-7	C₁₆H₁₅NO₅
rac-(2R,5R)-1-[(benzyloxy)carbonyl]-5-(4-chlorophenyl)pyrrolidine-2-carboxylic acid	rac-(2R,5R)-1-[(benzyloxy)carbonyl]-5-(4-chlorophenyl)pyrrolidine-2-carboxylic acid	分子量：359.8 密度：N/A 沸点：N/A 熔点：N/A	2345677-79-2	C₁₉H₁₈ClNO₄
8-({[(Benzyloxy)carbonyl]amino}methyl)-5,6,7,8-tetrahydronaphthalene-2-carboxylic acid	8-({[(Benzyloxy)carbonyl]amino}methyl)-5,6,7,8-tetrahydronaphthalene-2-carboxylic acid	分子量：339.4 密度：N/A 沸点：N/A 熔点：N/A	2580225-09-6	C₂₀H₂₁NO₄
4-bromo-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1H-1,3-benzodiazole-6-carboxylic acid	4-bromo-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1H-1,3-benzodiazole-6-carboxylic acid	分子量：478.3 密度：N/A 沸点：N/A 熔点：N/A	2383963-53-7	C₂₃H₁₆BrN₃O₄
2-[4-(6-{4-[2-(Methylsulfanyl)pyrimidin-4-yl]piperazin-1-yl}pyridazin-3-yl)piperazin-1-yl]ethan-1-ol	2-[4-(6-{4-[2-(Methylsulfanyl)pyrimidin-4-yl]piperazin-1-yl}pyridazin-3-yl)piperazin-1-yl]ethan-1-ol	分子量：416.5 密度：N/A 沸点：N/A 熔点：N/A	2877718-84-6	C₁₉H₂₈N₈OS
4-(1-{[(9H-fluoren-9-yl)methoxy]carbonyl}azetidin-3-yl)butanoic acid	4-(1-{[(9H-fluoren-9-yl)methoxy]carbonyl}azetidin-3-yl)butanoic acid	分子量：365.4 密度：N/A 沸点：N/A 熔点：N/A	2293364-66-4	C₂₂H₂₃NO₄
2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylic acid	2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylic acid	分子量：419.5 密度：N/A 沸点：N/A 熔点：N/A	2580236-91-3	C₂₄H₂₁NO₄S
3-(Benzyloxy)-2-{[(tert-butoxy)carbonyl]amino}benzoic acid	3-(Benzyloxy)-2-{[(tert-butoxy)carbonyl]amino}benzoic acid	分子量：343.4 密度：N/A 沸点：N/A 熔点：N/A	2580248-85-5	C₁₉H₂₁NO₅
2-[6-Oxo-4-(propan-2-yl)-1,6-dihydropyrimidin-1-yl]ethane-1-sulfonamide	2-[6-Oxo-4-(propan-2-yl)-1,6-dihydropyrimidin-1-yl]ethane-1-sulfonamide	分子量：245.30 密度：N/A 沸点：N/A 熔点：N/A	2580248-93-5	C₉H₁₅N₃O₃S
{6,6-Dimethylspiro[3.3]heptan-2-yl}methanesulfonamide	{6,6-Dimethylspiro[3.3]heptan-2-yl}methanesulfonamide	分子量：217.33 密度：N/A 沸点：N/A 熔点：N/A	2580248-98-0	C₁₀H₁₉NO₂S
Tert-butyl 4-cyano-4-(sulfamoylmethyl)piperidine-1-carboxylate	Tert-butyl 4-cyano-4-(sulfamoylmethyl)piperidine-1-carboxylate	分子量：303.38 密度：N/A 沸点：N/A 熔点：N/A	2580225-19-8	C₁₂H₂₁N₃O₄S
Spiro[bicyclo[2.2.1]heptane-7,1'-cyclopropan]-2-ene-6-sulfonamide	Spiro[bicyclo[2.2.1]heptane-7,1'-cyclopropan]-2-ene-6-sulfonamide	分子量：199.27 密度：N/A 沸点：N/A 熔点：N/A	2580188-92-5	C₉H₁₃NO₂S
N-[(2-chlorophenyl)methyl]-2-{4-[(3-methylpyridin-2-yl)methyl]piperazin-1-yl}acetamide	N-[(2-chlorophenyl)methyl]-2-{4-[(3-methylpyridin-2-yl)methyl]piperazin-1-yl}acetamide	分子量：372.9 密度：N/A 沸点：N/A 熔点：N/A	2877642-93-6	C₂₀H₂₅ClN₄O
Tert-butyl 5-sulfamoyl-2-azaspiro[3.3]heptane-2-carboxylate	Tert-butyl 5-sulfamoyl-2-azaspiro[3.3]heptane-2-carboxylate	分子量：276.35 密度：N/A 沸点：N/A 熔点：N/A	2580225-23-4	C₁₁H₂₀N₂O₄S
Benzyl 1-(sulfamoylmethyl)-7-azabicyclo[2.2.1]heptane-7-carboxylate	Benzyl 1-(sulfamoylmethyl)-7-azabicyclo[2.2.1]heptane-7-carboxylate	分子量：324.4 密度：N/A 沸点：N/A 熔点：N/A	2580225-27-8	C₁₅H₂₀N₂O₄S
2-(3,4-dihydro-2H-1,4-benzoxazin-4-yl)ethane-1-sulfonamide	2-(3,4-dihydro-2H-1,4-benzoxazin-4-yl)ethane-1-sulfonamide	分子量：242.30 密度：N/A 沸点：N/A 熔点：N/A	2580236-98-0	C₁₀H₁₄N₂O₃S
2-{1,3-dioxo-hexahydro-1H-pyrrolo[1,2-c]imidazolidin-2-yl}ethane-1-sulfonamide	2-{1,3-dioxo-hexahydro-1H-pyrrolo[1,2-c]imidazolidin-2-yl}ethane-1-sulfonamide	分子量：247.27 密度：N/A 沸点：N/A 熔点：N/A	2580178-21-6	C₈H₁₃N₃O₄S
3-(2-{[(Tert-butoxy)carbonyl]amino}-1-hydroxypropan-2-yl)benzoic acid	3-(2-{[(Tert-butoxy)carbonyl]amino}-1-hydroxypropan-2-yl)benzoic acid	分子量：295.33 密度：N/A 沸点：N/A 熔点：N/A	2580237-03-0	C₁₅H₂₁NO₅
Ethyl 4-fluoro-2-azabicyclo[2.1.1]hexane-1-carboxylate	Ethyl 4-fluoro-2-azabicyclo[2.1.1]hexane-1-carboxylate	分子量：173.18 密度：N/A 沸点：N/A 熔点：N/A	2580199-81-9	C₈H₁₂FNO₂