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
I+/--[[(3-Chlorophenyl)methyl]methylamino]-N-cyclopropylbenzeneacetamide	I+/--[[(3-Chlorophenyl)methyl]methylamino]-N-cyclopropylbenzeneacetamide	分子量：328.8 密度：N/A 沸点：N/A 熔点：N/A	1048983-29-4	C₁₉H₂₁ClN₂O
3-[(1Z)-(methoxyimino)methyl]-1-phenylthiourea	3-[(1Z)-(methoxyimino)methyl]-1-phenylthiourea	分子量：209.27 密度：N/A 沸点：N/A 熔点：N/A	338976-99-1	C₉H₁₁N₃OS
N'-[2-(2,4-dichlorophenoxy)ethanimidoyl]-2-methyl-4-(trifluoromethyl)-1,3-thiazole-5-carbohydrazide	N'-[2-(2,4-dichlorophenoxy)ethanimidoyl]-2-methyl-4-(trifluoromethyl)-1,3-thiazole-5-carbohydrazide	分子量：427.2 密度：N/A 沸点：N/A 熔点：N/A	338978-16-8	C₁₄H₁₁Cl₂F₃N₄O₂S
2-{4-[5-(2,4-Dichlorophenyl)-2-furyl]-1,3-thiazol-2-yl}-3-(4-methoxyphenyl)acrylonitrile	2-{4-[5-(2,4-Dichlorophenyl)-2-furyl]-1,3-thiazol-2-yl}-3-(4-methoxyphenyl)acrylonitrile	分子量：453.3 密度：N/A 沸点：N/A 熔点：N/A	338978-44-2	C₂₃H₁₄Cl₂N₂O₂S
N'-({[(4-chlorobenzyl)oxy]imino}methyl)-2-{4-[3-chloro-5-(trifluoromethyl)-2-pyridinyl]piperazino}acetohydrazide	N'-({[(4-chlorobenzyl)oxy]imino}methyl)-2-{4-[3-chloro-5-(trifluoromethyl)-2-pyridinyl]piperazino}acetohydrazide	分子量：505.3 密度：N/A 沸点：N/A 熔点：N/A	338979-31-0	C₂₀H₂₁Cl₂F₃N₆O₂
7,7-dimethyl-5,6,7,8-tetrahydro-4H-furo[3,2-c]azepin-4-one	7,7-dimethyl-5,6,7,8-tetrahydro-4H-furo[3,2-c]azepin-4-one	分子量：179.22 密度：N/A 沸点：N/A 熔点：N/A	82878-21-5	C₁₀H₁₃NO₂
(E)-N-{[3-chloro-5-(trifluoromethyl)pyridin-2-yl]amino}-N'-[(2,6-dichlorophenyl)methoxy]methanimidamide	(E)-N-{[3-chloro-5-(trifluoromethyl)pyridin-2-yl]amino}-N'-[(2,6-dichlorophenyl)methoxy]methanimidamide	分子量：413.6 密度：N/A 沸点：N/A 熔点：N/A	339104-10-8	C₁₄H₁₀Cl₃F₃N₄O
(1E,3E)-1-(dimethylaminomethylidene)-3-[(methoxyamino)methylidene]thiourea	(1E,3E)-1-(dimethylaminomethylidene)-3-[(methoxyamino)methylidene]thiourea	分子量：188.25 密度：N/A 沸点：N/A 熔点：N/A	339104-19-7	C₆H₁₂N₄OS
1,3-bis[(1Z)-(methoxyimino)methyl]thiourea	1,3-bis[(1Z)-(methoxyimino)methyl]thiourea	分子量：190.23 密度：N/A 沸点：N/A 熔点：N/A	339104-46-0	C₅H₁₀N₄O₂S
N-({[(4-chlorobenzyl)oxy]imino}methyl)-N'-[(dimethylamino)methylene]thiourea	N-({[(4-chlorobenzyl)oxy]imino}methyl)-N'-[(dimethylamino)methylene]thiourea	分子量：298.79 密度：N/A 沸点：N/A 熔点：N/A	339104-48-2	C₁₂H₁₅ClN₄OS
N-methyl-2-(3-methyl-4-nitro-1,2-oxazol-5-yl)ethanimine Oxide	N-methyl-2-(3-methyl-4-nitro-1,2-oxazol-5-yl)ethanimine Oxide	分子量：199.16 密度：N/A 沸点：N/A 熔点：N/A	339105-76-9	C₇H₉N₃O₄
5-Methyl-3-(3-hydroxypropyl)isoxazole	5-Methyl-3-(3-hydroxypropyl)isoxazole	分子量：141.17 密度：N/A 沸点：N/A 熔点：N/A	91945-50-5	C₇H₁₁NO₂
5-Methyl-3-(3-bromopropyl)isoxazole	5-Methyl-3-(3-bromopropyl)isoxazole	分子量：204.06 密度：N/A 沸点：N/A 熔点：N/A	91945-51-6	C₇H₁₀BrNO
3-(2-[1,1'-biphenyl]-4-yl-2-oxoethyl)-2-methyl-5-phenyldihydro-2H-pyrrolo[3,4-d]isoxazole-4,6(3H,5H)-dione	3-(2-[1,1'-biphenyl]-4-yl-2-oxoethyl)-2-methyl-5-phenyldihydro-2H-pyrrolo[3,4-d]isoxazole-4,6(3H,5H)-dione	分子量：426.5 密度：N/A 沸点：N/A 熔点：N/A	324009-16-7	C₂₆H₂₂N₂O₄
N-[3-(hydroxymethyl)-8-methoxy-3,4-dihydro-2H-chromen-4-yl]-N-methyl-N'-[3-(trifluoromethyl)phenyl]urea	N-[3-(hydroxymethyl)-8-methoxy-3,4-dihydro-2H-chromen-4-yl]-N-methyl-N'-[3-(trifluoromethyl)phenyl]urea	分子量：410.4 密度：N/A 沸点：N/A 熔点：N/A	324009-19-0	C₂₀H₂₁F₃N₂O₄
{4-[acetyl(methyl)amino]-8-methoxy-3,4-dihydro-2H-chromen-3-yl}methyl acetate	{4-[acetyl(methyl)amino]-8-methoxy-3,4-dihydro-2H-chromen-3-yl}methyl acetate	分子量：307.34 密度：N/A 沸点：N/A 熔点：N/A	324009-21-4	C₁₆H₂₁NO₅
4-(Pyrazin-2-yl)thiazole-2-thiol	4-(Pyrazin-2-yl)thiazole-2-thiol	分子量：195.3 密度：N/A 沸点：N/A 熔点：N/A	91516-40-4	C₇H₅N₃S₂
2-(Methylthio)-4-(pyrazin-2-yl)thiazole	2-(Methylthio)-4-(pyrazin-2-yl)thiazole	分子量：209.3 密度：N/A 沸点：N/A 熔点：N/A	91516-41-5	C₈H₇N₃S₂
6-bromo-2-methyl-1H-Imidazo[4,5-b]pyrazine	6-bromo-2-methyl-1H-Imidazo[4,5-b]pyrazine	分子量：213.03 密度：N/A 沸点：N/A 熔点：N/A	91225-42-2	C₆H₅BrN₄
6-Methoxy-2,3-dimethylpyrazino[2,3-b]pyrazine	6-Methoxy-2,3-dimethylpyrazino[2,3-b]pyrazine	分子量：190.20 密度：N/A 沸点：N/A 熔点：N/A	91225-52-4	C₉H₁₀N₄O
2-[2-(2,4-Dichlorophenyl)hydrazono]-3-(methoxyimino)propanenitrile	2-[2-(2,4-Dichlorophenyl)hydrazono]-3-(methoxyimino)propanenitrile	分子量：271.10 密度：N/A 沸点：N/A 熔点：N/A	339106-75-1	C₁₀H₈Cl₂N₄O
4-methoxy-2,5-dioxo-2,5-dihydro-1H-pyrrole-3-carbonitrile	4-methoxy-2,5-dioxo-2,5-dihydro-1H-pyrrole-3-carbonitrile	分子量：152.11 密度：N/A 沸点：N/A 熔点：N/A	87465-75-6	C₆H₄N₂O₃
Methyl 2-(4-chlorophenyl)-4-oxo-4-[4-(trifluoromethyl)phenyl]butanoate	Methyl 2-(4-chlorophenyl)-4-oxo-4-[4-(trifluoromethyl)phenyl]butanoate	分子量：370.7 密度：N/A 沸点：N/A 熔点：N/A	882748-10-9	C₁₈H₁₄ClF₃O₃
3-(4-{4-[3-Chloro-5-(trifluoromethyl)-2-pyridinyl]piperazino}anilino)-1-(4-methylphenyl)-2-propen-1-one	3-(4-{4-[3-Chloro-5-(trifluoromethyl)-2-pyridinyl]piperazino}anilino)-1-(4-methylphenyl)-2-propen-1-one	分子量：500.9 密度：N/A 沸点：N/A 熔点：N/A	478262-29-2	C₂₆H₂₄ClF₃N₄O
4H,5H,6H,7H,8H-furo[3,2-c]azepine	4H,5H,6H,7H,8H-furo[3,2-c]azepine	分子量：137.18 密度：N/A 沸点：N/A 熔点：N/A	82878-22-6	C₈H₁₁NO
(E)-2-phenyl-N-(1H-1,2,3,4-tetraazol-5-yl)-3-(2-thienyl)-2-propenamide	(E)-2-phenyl-N-(1H-1,2,3,4-tetraazol-5-yl)-3-(2-thienyl)-2-propenamide	分子量：297.34 密度：N/A 沸点：N/A 熔点：N/A	478249-10-4	C₁₄H₁₁N₅OS
7,7-dimethyl-4H,5H,6H,7H,8H-furo[3,2-c]azepine	7,7-dimethyl-4H,5H,6H,7H,8H-furo[3,2-c]azepine	分子量：165.23 密度：N/A 沸点：N/A 熔点：N/A	82878-23-7	C₁₀H₁₅NO
(2Z)-2-(benzenesulfonyl)-3-{3-[(2-chloro-1,3-thiazol-5-yl)methoxy]phenyl}prop-2-enenitrile	(2Z)-2-(benzenesulfonyl)-3-{3-[(2-chloro-1,3-thiazol-5-yl)methoxy]phenyl}prop-2-enenitrile	分子量：416.9 密度：N/A 沸点：N/A 熔点：N/A	866144-39-0	C₁₉H₁₃ClN₂O₃S₂
(2Z)-2-{[2-(trifluoromethyl)phenyl]methylidene}-2,3,4,9-tetrahydro-1H-carbazol-1-one	(2Z)-2-{[2-(trifluoromethyl)phenyl]methylidene}-2,3,4,9-tetrahydro-1H-carbazol-1-one	分子量：341.3 密度：N/A 沸点：N/A 熔点：N/A	866149-09-9	C₂₀H₁₄F₃NO
2-({2-[4-(1,3-Benzodioxol-5-ylmethyl)piperazino]-5-nitrophenyl}methylene)-3-quinuclidinone	2-({2-[4-(1,3-Benzodioxol-5-ylmethyl)piperazino]-5-nitrophenyl}methylene)-3-quinuclidinone	分子量：476.5 密度：N/A 沸点：N/A 熔点：N/A	866149-57-7	C₂₆H₂₈N₄O₅
2-[3-(hydroxymethyl)piperidino]-5-[(E)-1-naphthylmethylidene]-1,3-thiazol-4(5H)-one	2-[3-(hydroxymethyl)piperidino]-5-[(E)-1-naphthylmethylidene]-1,3-thiazol-4(5H)-one	分子量：352.5 密度：N/A 沸点：N/A 熔点：N/A	866149-74-8	C₂₀H₂₀N₂O₂S
(5E)-2-[2-(2-hydroxyethyl)piperidin-1-yl]-5-{[4-(methylsulfanyl)phenyl]methylidene}-4,5-dihydro-1,3-thiazol-4-one	(5E)-2-[2-(2-hydroxyethyl)piperidin-1-yl]-5-{[4-(methylsulfanyl)phenyl]methylidene}-4,5-dihydro-1,3-thiazol-4-one	分子量：362.5 密度：N/A 沸点：N/A 熔点：N/A	866149-77-1	C₁₈H₂₂N₂O₂S₂
5-Methyl-2-(trifluoromethyl)imidazo[1,2-a]pyridine-3-carboxylic acid	5-Methyl-2-(trifluoromethyl)imidazo[1,2-a]pyridine-3-carboxylic acid	分子量：244.17 密度：N/A 沸点：N/A 熔点：N/A	900019-77-4	C₁₀H₇F₃N₂O₂
Ethyl 6-iodo-2-(trifluoromethyl)imidazo[1,2-a]pyridine-3-carboxylate	Ethyl 6-iodo-2-(trifluoromethyl)imidazo[1,2-a]pyridine-3-carboxylate	分子量：384.09 密度：N/A 沸点：N/A 熔点：N/A	900019-79-6	C₁₁H₈F₃IN₂O₂
(R)(1-Methyl-Hexyloxycarbonyl)-carbamic acid 2,6-diisopropyl-phenyl ester	(R)(1-Methyl-Hexyloxycarbonyl)-carbamic acid 2,6-diisopropyl-phenyl ester	分子量：363.5 密度：N/A 沸点：N/A 熔点：N/A	149055-89-0	C₂₁H₃₃NO₄
3-(1H-pyrrol-1-yl)-5-(trifluoromethyl)pyridine	3-(1H-pyrrol-1-yl)-5-(trifluoromethyl)pyridine	分子量：212.17 密度：N/A 沸点：N/A 熔点：N/A	900019-80-9	C₁₀H₇F₃N₂
2-{[(6-Chloroimidazo[1,2-a]pyridin-3-yl)methyl]amino}propanoic acid	2-{[(6-Chloroimidazo[1,2-a]pyridin-3-yl)methyl]amino}propanoic acid	分子量：253.68 密度：N/A 沸点：N/A 熔点：N/A	1396964-40-1	C₁₁H₁₂ClN₃O₂
4-chloro-N-(9-chloro-5H-thiochromeno[4,3-d]pyrimidin-2-yl)benzenecarboxamide	4-chloro-N-(9-chloro-5H-thiochromeno[4,3-d]pyrimidin-2-yl)benzenecarboxamide	分子量：388.3 密度：N/A 沸点：N/A 熔点：N/A	882748-16-5	C₁₈H₁₁Cl₂N₃OS
3-(4-ethoxyphenyl)-3-(1H-pyrrol-1-yl)propanoic acid	3-(4-ethoxyphenyl)-3-(1H-pyrrol-1-yl)propanoic acid	分子量：259.30 密度：N/A 沸点：N/A 熔点：N/A	900015-37-4	C₁₅H₁₇NO₃
1-[(6-Chloroimidazo[1,2-a]pyridin-3-yl)methyl]-4-phenyl-4-piperidinecarbonitrile	1-[(6-Chloroimidazo[1,2-a]pyridin-3-yl)methyl]-4-phenyl-4-piperidinecarbonitrile	分子量：350.8 密度：N/A 沸点：N/A 熔点：N/A	882748-17-6	C₂₀H₁₉ClN₄
4-chloro-1H-pyrazolo[3,4-b]pyridine-5-carboxylic acid	4-chloro-1H-pyrazolo[3,4-b]pyridine-5-carboxylic acid	分子量：197.58 密度：N/A 沸点：N/A 熔点：N/A	1780768-22-0	C₇H₄ClN₃O₂
[(E)-(5-bromo-2-furyl)methylidene](methyl)ammoniumolate	[(E)-(5-bromo-2-furyl)methylidene](methyl)ammoniumolate	分子量：204.02 密度：N/A 沸点：N/A 熔点：N/A	41106-12-1	C₆H₆BrNO₂
(3-bromobenzyl)[(Z)-phenylmethylidene]ammoniumolate	(3-bromobenzyl)[(Z)-phenylmethylidene]ammoniumolate	分子量：290.15 密度：N/A 沸点：N/A 熔点：N/A	939893-12-6	C₁₄H₁₂BrNO
(3-chlorobenzyl)[(Z)-(4-chlorophenyl)methylidene]ammoniumolate	(3-chlorobenzyl)[(Z)-(4-chlorophenyl)methylidene]ammoniumolate	分子量：280.1 密度：N/A 沸点：N/A 熔点：N/A	939888-07-0	C₁₄H₁₁Cl₂NO
(2-bromobenzyl)[(Z)-phenylmethylidene]ammoniumolate	(2-bromobenzyl)[(Z)-phenylmethylidene]ammoniumolate	分子量：290.15 密度：N/A 沸点：N/A 熔点：N/A	939888-10-5	C₁₄H₁₂BrNO
(2-chlorobenzyl)[(Z)-phenylmethylidene]ammoniumolate	(2-chlorobenzyl)[(Z)-phenylmethylidene]ammoniumolate	分子量：245.70 密度：N/A 沸点：N/A 熔点：N/A	55606-36-5	C₁₄H₁₂ClNO
(cyclohexylmethyl)[(Z)-phenylmethylidene]ammoniumolate	(cyclohexylmethyl)[(Z)-phenylmethylidene]ammoniumolate	分子量：217.31 密度：N/A 沸点：N/A 熔点：N/A	939888-13-8	C₁₄H₁₉NO
(2-chlorobenzyl)[(Z)-4-pyridinylmethylidene]ammoniumolate	(2-chlorobenzyl)[(Z)-4-pyridinylmethylidene]ammoniumolate	分子量：246.69 密度：N/A 沸点：N/A 熔点：N/A	939893-24-0	C₁₃H₁₁ClN₂O
2-(2-Chlorobenzyl)-5-phenyl-2,5-dihydroisoxazole	2-(2-Chlorobenzyl)-5-phenyl-2,5-dihydroisoxazole	分子量：271.74 密度：N/A 沸点：N/A 熔点：N/A	939888-19-4	C₁₆H₁₄ClNO
2-(3-Bromobenzyl)-5-phenyl-2,5-dihydroisoxazole	2-(3-Bromobenzyl)-5-phenyl-2,5-dihydroisoxazole	分子量：316.19 密度：N/A 沸点：N/A 熔点：N/A	939893-30-8	C₁₆H₁₄BrNO