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-[(3,4-Dimethylphenyl)amino]-3-pyridinecarbonitrile	2-[(3,4-Dimethylphenyl)amino]-3-pyridinecarbonitrile	分子量：223.27 密度：N/A 沸点：N/A 熔点：N/A	121005-02-5	C₁₄H₁₃N₃
2-(4-Nitrophenylamino)phenol	2-(4-Nitrophenylamino)phenol	分子量：230.22 密度：N/A 沸点：N/A 熔点：N/A	119707-16-3	C₁₂H₁₀N₂O₃
2-Phenethoxyethane-1-sulfonyl chloride	2-Phenethoxyethane-1-sulfonyl chloride	分子量：248.73 密度：N/A 沸点：N/A 熔点：N/A	189012-34-8	C₁₀H₁₃ClO₃S
N-(4-Amino-2-chloro-5-hydroxyphenyl)acetamide	N-(4-Amino-2-chloro-5-hydroxyphenyl)acetamide	分子量：200.62 密度：N/A 沸点：N/A 熔点：N/A	144680-96-6	C₈H₉ClN₂O₂
2-Chloro-6-ethenylpyrazine	2-Chloro-6-ethenylpyrazine	分子量：140.57 密度：N/A 沸点：N/A 熔点：N/A	2228314-07-4	C₆H₅ClN₂
Methyl 3-amino-6-methoxythieno[3,2-b]pyridine-2-carboxylate	Methyl 3-amino-6-methoxythieno[3,2-b]pyridine-2-carboxylate	分子量：238.27 密度：N/A 沸点：N/A 熔点：N/A	208994-07-4	C₁₀H₁₀N₂O₃S
3-(2,6-Difluorophenyl)-1-(2-methylphenyl)prop-2-en-1-one	3-(2,6-Difluorophenyl)-1-(2-methylphenyl)prop-2-en-1-one	分子量：258.26 密度：N/A 沸点：N/A 熔点：N/A	1061887-24-8	C₁₆H₁₂F₂O
N-(3-chlorophenyl)-2-[2-(morpholin-4-yl)-4-oxo-4,5-dihydro-1,3-thiazol-5-yl]acetamide	N-(3-chlorophenyl)-2-[2-(morpholin-4-yl)-4-oxo-4,5-dihydro-1,3-thiazol-5-yl]acetamide	分子量：353.8 密度：N/A 沸点：N/A 熔点：N/A	1010890-86-4	C₁₅H₁₆ClN₃O₃S
1-(3-Butoxypropyl)-3-hydroxy-2-methylpyrid-4-one	1-(3-Butoxypropyl)-3-hydroxy-2-methylpyrid-4-one	分子量：239.31 密度：N/A 沸点：N/A 熔点：N/A	150455-58-6	C₁₃H₂₁NO₃
5-amino-3-chloro-N,N-dimethylpicolinamide	5-amino-3-chloro-N,N-dimethylpicolinamide	分子量：199.64 密度：N/A 沸点：N/A 熔点：N/A	141238-25-7	C₈H₁₀ClN₃O
5-chloro-2-(methoxymethyl)-1H-benzimidazole	5-chloro-2-(methoxymethyl)-1H-benzimidazole	分子量：196.63 密度：N/A 沸点：N/A 熔点：N/A	929339-02-6	C₉H₉ClN₂O
2-(5,6-dimethyl-1H-benzimidazol-1-yl)acetamide	2-(5,6-dimethyl-1H-benzimidazol-1-yl)acetamide	分子量：203.24 密度：N/A 沸点：N/A 熔点：N/A	953847-76-2	C₁₁H₁₃N₃O
(1Z)-2-(5,6-dimethyl-1H-benzimidazol-1-yl)-N'-hydroxyethanimidamide	(1Z)-2-(5,6-dimethyl-1H-benzimidazol-1-yl)-N'-hydroxyethanimidamide	分子量：218.26 密度：N/A 沸点：N/A 熔点：N/A	889951-80-8	C₁₁H₁₄N₄O
N-(3-fluorobenzyl)tetrahydrothiophen-3-amine 1,1-dioxide	N-(3-fluorobenzyl)tetrahydrothiophen-3-amine 1,1-dioxide	分子量：243.30 密度：N/A 沸点：N/A 熔点：N/A	953853-00-4	C₁₁H₁₄FNO₂S
N-{2-methyl-4-[(E)-(2-methylphenyl)diazenyl]phenyl}-5-phenyl-1,2-oxazole-3-carboxamide	N-{2-methyl-4-[(E)-(2-methylphenyl)diazenyl]phenyl}-5-phenyl-1,2-oxazole-3-carboxamide	分子量：396.4 密度：N/A 沸点：N/A 熔点：N/A	898521-19-2	C₂₄H₂₀N₄O₂
2-(2-chlorophenoxy)-N-[2-(morpholin-4-yl)-2-(thiophen-2-yl)ethyl]acetamide	2-(2-chlorophenoxy)-N-[2-(morpholin-4-yl)-2-(thiophen-2-yl)ethyl]acetamide	分子量：380.9 密度：N/A 沸点：N/A 熔点：N/A	898495-23-3	C₁₈H₂₁ClN₂O₃S
Methyl 2-methoxy-6-methylpyrimidine-4-carboxylate	Methyl 2-methoxy-6-methylpyrimidine-4-carboxylate	分子量：182.18 密度：N/A 沸点：N/A 熔点：N/A	136517-99-2	C₈H₁₀N₂O₃
2-Methyl-4-(1,2,3,6-tetrahydropyridin-5-yl)-1,3-oxazole	2-Methyl-4-(1,2,3,6-tetrahydropyridin-5-yl)-1,3-oxazole	分子量：164.20 密度：N/A 沸点：N/A 熔点：N/A	122829-36-1	C₉H₁₂N₂O
o-Cyclobutylhydroxylamine	o-Cyclobutylhydroxylamine	分子量：87.12 密度：N/A 沸点：N/A 熔点：N/A	134330-48-6	C₄H₉NO
5-(4-chloro-2-nitrophenyl)-2-methyl-N-[3-(2-oxopropyl)-1,2,4-thiadiazol-5-yl]furan-3-carboxamide	5-(4-chloro-2-nitrophenyl)-2-methyl-N-[3-(2-oxopropyl)-1,2,4-thiadiazol-5-yl]furan-3-carboxamide	分子量：420.8 密度：N/A 沸点：N/A 熔点：N/A	900136-75-6	C₁₇H₁₃ClN₄O₅S
(E)-2-(5-((5-(2-fluorophenyl)furan-2-yl)methylene)-4-oxo-2-thioxothiazolidin-3-yl)hexanoic acid	(E)-2-(5-((5-(2-fluorophenyl)furan-2-yl)methylene)-4-oxo-2-thioxothiazolidin-3-yl)hexanoic acid	分子量：419.5 密度：N/A 沸点：N/A 熔点：N/A	951901-55-6	C₂₀H₁₈FNO₄S₂
(E)-4-(5-oxo-2-thioxo-4-((5-(m-tolyl)furan-2-yl)methylene)thiazolidin-3-yl)butanoic acid	(E)-4-(5-oxo-2-thioxo-4-((5-(m-tolyl)furan-2-yl)methylene)thiazolidin-3-yl)butanoic acid	分子量：387.5 密度：N/A 沸点：N/A 熔点：N/A	951896-40-5	C₁₉H₁₇NO₄S₂
7-methyl-1-oxo-1H-isochromene-3-carboxylic acid	7-methyl-1-oxo-1H-isochromene-3-carboxylic acid	分子量：204.18 密度：N/A 沸点：N/A 熔点：N/A	951896-48-3	C₁₁H₈O₄
N-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)benzofuran-3-carboxamide	N-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)benzofuran-3-carboxamide	分子量：295.29 密度：N/A 沸点：N/A 熔点：N/A	951894-73-8	C₁₇H₁₃NO₄
Ethyl 4-(benzylamino)-6-chloroquinoline-3-carboxylate	Ethyl 4-(benzylamino)-6-chloroquinoline-3-carboxylate	分子量：340.8 密度：N/A 沸点：N/A 熔点：N/A	955283-33-7	C₁₉H₁₇ClN₂O₂
6-(4-ethylpiperazin-1-yl)-N-(3-methylphenyl)-1-phenyl-1H-pyrazolo[3,4-d]pyrimidin-4-amine	6-(4-ethylpiperazin-1-yl)-N-(3-methylphenyl)-1-phenyl-1H-pyrazolo[3,4-d]pyrimidin-4-amine	分子量：413.5 密度：N/A 沸点：N/A 熔点：N/A	946265-73-2	C₂₄H₂₇N₇
N-(3-fluorophenyl)-1-phenyl-6-(piperidin-1-yl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine	N-(3-fluorophenyl)-1-phenyl-6-(piperidin-1-yl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine	分子量：388.4 密度：N/A 沸点：N/A 熔点：N/A	955304-40-2	C₂₂H₂₁FN₆
N-{5-[2-(3,4-dimethoxyphenyl)ethyl]-1,4,5,6-tetrahydro-1,3,5-triazin-2-yl}-4,8-dimethylquinazolin-2-amine	N-{5-[2-(3,4-dimethoxyphenyl)ethyl]-1,4,5,6-tetrahydro-1,3,5-triazin-2-yl}-4,8-dimethylquinazolin-2-amine	分子量：420.5 密度：N/A 沸点：N/A 熔点：N/A	945371-22-2	C₂₃H₂₈N₆O₂
(2Z)-3-(dimethylamino)-1-(4-methoxyphenyl)prop-2-en-1-one	(2Z)-3-(dimethylamino)-1-(4-methoxyphenyl)prop-2-en-1-one	分子量：205.25 密度：N/A 沸点：N/A 熔点：N/A	1702276-05-8	C₁₂H₁₅NO₂
1-(2-chlorobenzyl)-5-methyl-3,4-dinitro-1H-pyrazole	1-(2-chlorobenzyl)-5-methyl-3,4-dinitro-1H-pyrazole	分子量：296.66 密度：N/A 沸点：N/A 熔点：N/A	1005669-24-8	C₁₁H₉ClN₄O₄
[(3-Amino-4-oxo-3,4-dihydroquinazolin-2-yl)thio]acetonitrile	[(3-Amino-4-oxo-3,4-dihydroquinazolin-2-yl)thio]acetonitrile	分子量：232.26 密度：N/A 沸点：N/A 熔点：N/A	832739-29-4	C₁₀H₈N₄OS
2-({5-[2-(4-bromo-3,5-dimethyl-1H-pyrazol-1-yl)ethyl]-4-ethyl-4H-1,2,4-triazol-3-yl}sulfanyl)acetohydrazide	2-({5-[2-(4-bromo-3,5-dimethyl-1H-pyrazol-1-yl)ethyl]-4-ethyl-4H-1,2,4-triazol-3-yl}sulfanyl)acetohydrazide	分子量：402.32 密度：N/A 沸点：N/A 熔点：N/A	1005630-40-9	C₁₃H₂₀BrN₇OS
1-[(1-methyl-1H-pyrazol-4-yl)methyl]-1H-pyrazol-3-amine	1-[(1-methyl-1H-pyrazol-4-yl)methyl]-1H-pyrazol-3-amine	分子量：177.21 密度：N/A 沸点：N/A 熔点：N/A	1005584-17-7	C₈H₁₁N₅
1-(2-chloro-6-fluorobenzyl)-3-isothiocyanato-1H-pyrazole	1-(2-chloro-6-fluorobenzyl)-3-isothiocyanato-1H-pyrazole	分子量：267.71 密度：N/A 沸点：N/A 熔点：N/A	1005697-84-6	C₁₁H₇ClFN₃S
Propan-2-yl 2-amino-4-(4-chlorophenyl)-5-methylthiophene-3-carboxylate	Propan-2-yl 2-amino-4-(4-chlorophenyl)-5-methylthiophene-3-carboxylate	分子量：309.8 密度：N/A 沸点：N/A 熔点：N/A	832739-94-3	C₁₅H₁₆ClNO₂S
6-Amino-3-methyl-4-(4-methylphenyl)-1-(4-nitrophenyl)-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile	6-Amino-3-methyl-4-(4-methylphenyl)-1-(4-nitrophenyl)-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile	分子量：387.4 密度：N/A 沸点：N/A 熔点：N/A	832740-51-9	C₂₁H₁₇N₅O₃
methyl 3-[5-cyclopropyl-3-(trifluoromethyl)-1H-pyrazol-1-yl]-2-methylpropanoate	methyl 3-[5-cyclopropyl-3-(trifluoromethyl)-1H-pyrazol-1-yl]-2-methylpropanoate	分子量：276.25 密度：N/A 沸点：N/A 熔点：N/A	1005700-15-1	C₁₂H₁₅F₃N₂O₂
3-(4-bromo-3,5-dimethyl-1H-pyrazol-1-yl)-2-methylpropanehydrazide	3-(4-bromo-3,5-dimethyl-1H-pyrazol-1-yl)-2-methylpropanehydrazide	分子量：275.15 密度：N/A 沸点：N/A 熔点：N/A	1005700-37-7	C₉H₁₅BrN₄O
methyl 3-(3,5-dimethyl-4-nitro-1H-pyrazol-1-yl)-2-methylpropanoate	methyl 3-(3,5-dimethyl-4-nitro-1H-pyrazol-1-yl)-2-methylpropanoate	分子量：241.24 密度：N/A 沸点：N/A 熔点：N/A	1005670-63-2	C₁₀H₁₅N₃O₄
2-chloro-N-[4-(furan-2-yl)pyrimidin-2-yl]acetamide	2-chloro-N-[4-(furan-2-yl)pyrimidin-2-yl]acetamide	分子量：237.64 密度：N/A 沸点：N/A 熔点：N/A	832740-97-3	C₁₀H₈ClN₃O₂
(5-Ethyl-2-phenyl-1,2,3-triazol-4-yl)methan-1-ol	(5-Ethyl-2-phenyl-1,2,3-triazol-4-yl)methan-1-ol	分子量：203.24 密度：N/A 沸点：N/A 熔点：N/A	279682-49-4	C₁₁H₁₃N₃O
4-Amino-6-chloro-2-(4-methoxyphenyl)methyl-2H-pyrazolo[3,4-b]pyridine-5-carboxylic Acid	4-Amino-6-chloro-2-(4-methoxyphenyl)methyl-2H-pyrazolo[3,4-b]pyridine-5-carboxylic Acid	分子量：332.74 密度：N/A 沸点：N/A 熔点：N/A	384835-97-6	C₁₅H₁₃ClN₄O₃
Oxazole, 2-[4-bromo-3-(dibromomethyl)phenyl]-	Oxazole, 2-[4-bromo-3-(dibromomethyl)phenyl]-	分子量：395.87 密度：N/A 沸点：N/A 熔点：N/A	415697-61-9	C₁₀H₆Br₃NO
4-Bromo-3-(dibromomethyl)benzoyl chloride	4-Bromo-3-(dibromomethyl)benzoyl chloride	分子量：391.28 密度：N/A 沸点：N/A 熔点：N/A	415697-60-8	C₈H₄Br₃ClO
1,2,3,4,5,10-Hexahydroazepino[3,4-b]indole	1,2,3,4,5,10-Hexahydroazepino[3,4-b]indole	分子量：186.25 密度：N/A 沸点：N/A 熔点：N/A	23240-51-9	C₁₂H₁₄N₂
2-[2-(Hydroxymethyl)benzimidazolyl]-1-(1,2,3,4-tetrahydroquinolyl)ethan-1-one	2-[2-(Hydroxymethyl)benzimidazolyl]-1-(1,2,3,4-tetrahydroquinolyl)ethan-1-one	分子量：321.4 密度：N/A 沸点：N/A 熔点：N/A	942883-78-5	C₁₉H₁₉N₃O₂
1-Ethynyl-4-(trifluoromethyl)cyclohexane	1-Ethynyl-4-(trifluoromethyl)cyclohexane	分子量：176.18 密度：N/A 沸点：N/A 熔点：N/A	1936532-46-5	C₉H₁₁F₃
2,3',4',6-Tetrafluoro-[1,1'-biphenyl]-4-ol	2,3',4',6-Tetrafluoro-[1,1'-biphenyl]-4-ol	分子量：242.17 密度：N/A 沸点：N/A 熔点：N/A	212386-82-8	C₁₂H₆F₄O
Bis(4-cyanatophenyl)sulfone	Bis(4-cyanatophenyl)sulfone	分子量：300.29 密度：N/A 沸点：N/A 熔点：N/A	2918-28-7	C₁₄H₈N₂O₄S
Isobutyrfentanyl	Isobutyrfentanyl	分子量：350.5 密度：N/A 沸点：N/A 熔点：N/A	119618-70-1	C₂₃H₃₀N₂O