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
N-(3-(dimethylamino)propyl)-5-methyl-N-(6-methylbenzo[d]thiazol-2-yl)isoxazole-3-carboxamide hydrochloride	N-(3-(dimethylamino)propyl)-5-methyl-N-(6-methylbenzo[d]thiazol-2-yl)isoxazole-3-carboxamide hydrochloride	分子量：394.9 密度：N/A 沸点：N/A 熔点：N/A	1330160-86-5	C₁₈H₂₃ClN₄O₂S
2-Bromo-N-ethyl-I(2),I(2)-dimethylbenzeneethanamine	2-Bromo-N-ethyl-I(2),I(2)-dimethylbenzeneethanamine	分子量：256.18 密度：N/A 沸点：N/A 熔点：N/A	173026-37-4	C₁₂H₁₈BrN
2-ethyl-N-[4-(1H-tetrazol-1-yl)phenyl]butanamide	2-ethyl-N-[4-(1H-tetrazol-1-yl)phenyl]butanamide	分子量：259.31 密度：N/A 沸点：N/A 熔点：N/A	901656-43-7	C₁₃H₁₇N₅O
4-[2-(3-chloro-4-methoxyphenyl)-2-oxoethyl]-1,4-benzoxazepine-3,5(2H,4H)-dione	4-[2-(3-chloro-4-methoxyphenyl)-2-oxoethyl]-1,4-benzoxazepine-3,5(2H,4H)-dione	分子量：359.8 密度：N/A 沸点：N/A 熔点：N/A	901664-95-7	C₁₈H₁₄ClNO₅
N-{2-[4-(1,3-benzoxazol-2-yl)piperidin-1-yl]-2-oxoethyl}-N-methyl-2-phenylethene-1-sulfonamide	N-{2-[4-(1,3-benzoxazol-2-yl)piperidin-1-yl]-2-oxoethyl}-N-methyl-2-phenylethene-1-sulfonamide	分子量：439.5 密度：N/A 沸点：N/A 熔点：N/A	924722-42-9	C₂₃H₂₅N₃O₄S
(4E)-4-[furan-2-yl(hydroxy)methylidene]-1-(2-hydroxyethyl)-5-(pyridin-3-yl)pyrrolidine-2,3-dione	(4E)-4-[furan-2-yl(hydroxy)methylidene]-1-(2-hydroxyethyl)-5-(pyridin-3-yl)pyrrolidine-2,3-dione	分子量：314.29 密度：N/A 沸点：N/A 熔点：N/A	901664-98-0	C₁₆H₁₄N₂O₅
2-(2-fluorophenoxy)-N-[(2Z)-5-(propylsulfonyl)-1,3,4-thiadiazol-2(3H)-ylidene]butanamide	2-(2-fluorophenoxy)-N-[(2Z)-5-(propylsulfonyl)-1,3,4-thiadiazol-2(3H)-ylidene]butanamide	分子量：387.5 密度：N/A 沸点：N/A 熔点：N/A	901665-03-0	C₁₅H₁₈FN₃O₄S₂
1,3,4-Trichloroisoquinoline	1,3,4-Trichloroisoquinoline	分子量：232.5 密度：N/A 沸点：N/A 熔点：N/A	21902-42-1	C₉H₄Cl₃N
N-[3-(acetylamino)-1,2,4-thiadiazol-5-yl]-1-[3-(4-chlorophenyl)-2,1-benzoxazol-5-yl]-5-methyl-1H-1,2,3-triazole-4-carboxamide	N-[3-(acetylamino)-1,2,4-thiadiazol-5-yl]-1-[3-(4-chlorophenyl)-2,1-benzoxazol-5-yl]-5-methyl-1H-1,2,3-triazole-4-carboxamide	分子量：494.9 密度：N/A 沸点：N/A 熔点：N/A	951897-80-6	C₂₁H₁₅ClN₈O₃S
1-[(5-Chloro-3-methyl-1-benzofuran-2-yl)carbonyl]-4-(2-pyridin-2-ylethyl)piperazine	1-[(5-Chloro-3-methyl-1-benzofuran-2-yl)carbonyl]-4-(2-pyridin-2-ylethyl)piperazine	分子量：383.9 密度：N/A 沸点：N/A 熔点：N/A	885735-21-7	C₂₁H₂₂ClN₃O₂
1,2-Difluoro-4-[4-(methoxymethylidene)cyclohexyl]benzene	1,2-Difluoro-4-[4-(methoxymethylidene)cyclohexyl]benzene	分子量：238.27 密度：N/A 沸点：N/A 熔点：N/A	135862-42-9	C₁₄H₁₆F₂O
Benzyl 2-(2-methoxyphenylamino)-2-oxoethylcarbamate	Benzyl 2-(2-methoxyphenylamino)-2-oxoethylcarbamate	分子量：314.34 密度：N/A 沸点：N/A 熔点：N/A	133010-40-9	C₁₇H₁₈N₂O₄
5-chloro-N-(4-chlorophenyl)-2-[(4-fluorobenzyl)sulfanyl]pyrimidine-4-carboxamide	5-chloro-N-(4-chlorophenyl)-2-[(4-fluorobenzyl)sulfanyl]pyrimidine-4-carboxamide	分子量：408.3 密度：N/A 沸点：N/A 熔点：N/A	901658-67-1	C₁₈H₁₂Cl₂FN₃OS
Cyclohexanol,2-(4-phenyl-1-piperidinyl)-,(1R)-	Cyclohexanol,2-(4-phenyl-1-piperidinyl)-,(1R)-	分子量：259.4 密度：N/A 沸点：N/A 熔点：N/A	1214630-12-2	C₁₇H₂₅NO
(2Z)-3-[5-(3-chlorophenyl)(2-furyl)]-N-(3-imidazolylpropyl)-2-(phenylcarbonyla mino)prop-2-enamide	(2Z)-3-[5-(3-chlorophenyl)(2-furyl)]-N-(3-imidazolylpropyl)-2-(phenylcarbonyla mino)prop-2-enamide	分子量：474.9 密度：N/A 沸点：N/A 熔点：N/A	385388-79-4	C₂₆H₂₃ClN₄O₃
N-[2-(2-chlorophenyl)-2-(pyrrolidin-1-yl)ethyl]-4-methylbenzamide	N-[2-(2-chlorophenyl)-2-(pyrrolidin-1-yl)ethyl]-4-methylbenzamide	分子量：342.9 密度：N/A 沸点：N/A 熔点：N/A	953857-64-2	C₂₀H₂₃ClN₂O
2-(4-methoxyphenyl)-N-[(2Z)-5-(methylsulfonyl)-1,3,4-thiadiazol-2(3H)-ylidene]acetamide	2-(4-methoxyphenyl)-N-[(2Z)-5-(methylsulfonyl)-1,3,4-thiadiazol-2(3H)-ylidene]acetamide	分子量：327.4 密度：N/A 沸点：N/A 熔点：N/A	895829-66-0	C₁₂H₁₃N₃O₄S₂
N-(5-((2-methylbenzyl)sulfonyl)-1,3,4-thiadiazol-2-yl)-2-propoxybenzamide	N-(5-((2-methylbenzyl)sulfonyl)-1,3,4-thiadiazol-2-yl)-2-propoxybenzamide	分子量：431.5 密度：N/A 沸点：N/A 熔点：N/A	895849-62-4	C₂₀H₂₁N₃O₄S₂
N-(5-((2-fluorobenzyl)sulfonyl)-1,3,4-thiadiazol-2-yl)-2-(2-methoxyphenoxy)acetamide	N-(5-((2-fluorobenzyl)sulfonyl)-1,3,4-thiadiazol-2-yl)-2-(2-methoxyphenoxy)acetamide	分子量：437.5 密度：N/A 沸点：N/A 熔点：N/A	895842-35-0	C₁₈H₁₆FN₃O₅S₂
4-tert-butyl-N-{5-[(2-fluorobenzyl)sulfonyl]-1,3,4-thiadiazol-2-yl}benzamide	4-tert-butyl-N-{5-[(2-fluorobenzyl)sulfonyl]-1,3,4-thiadiazol-2-yl}benzamide	分子量：433.5 密度：N/A 沸点：N/A 熔点：N/A	895840-31-0	C₂₀H₂₀FN₃O₃S₂
N-[(2E)-5-[(2-fluorobenzyl)sulfonyl]-1,3,4-thiadiazol-2(3H)-ylidene]-3-methylbenzamide	N-[(2E)-5-[(2-fluorobenzyl)sulfonyl]-1,3,4-thiadiazol-2(3H)-ylidene]-3-methylbenzamide	分子量：391.4 密度：N/A 沸点：N/A 熔点：N/A	895847-93-5	C₁₇H₁₄FN₃O₃S₂
N-[(2E)-5-[(2-fluorobenzyl)sulfonyl]-1,3,4-thiadiazol-2(3H)-ylidene]-2-methylbenzamide	N-[(2E)-5-[(2-fluorobenzyl)sulfonyl]-1,3,4-thiadiazol-2(3H)-ylidene]-2-methylbenzamide	分子量：391.4 密度：N/A 沸点：N/A 熔点：N/A	895821-21-3	C₁₇H₁₄FN₃O₃S₂
N-(5-((2-chlorobenzyl)sulfonyl)-1,3,4-thiadiazol-2-yl)-2-propoxybenzamide	N-(5-((2-chlorobenzyl)sulfonyl)-1,3,4-thiadiazol-2-yl)-2-propoxybenzamide	分子量：451.9 密度：N/A 沸点：N/A 熔点：N/A	901668-95-9	C₁₉H₁₈ClN₃O₄S₂
2-(benzylsulfanyl)-5-chloro-N-(3-chlorophenyl)pyrimidine-4-carboxamide	2-(benzylsulfanyl)-5-chloro-N-(3-chlorophenyl)pyrimidine-4-carboxamide	分子量：390.3 密度：N/A 沸点：N/A 熔点：N/A	901669-00-9	C₁₈H₁₃Cl₂N₃OS
2-(benzylsulfanyl)-5-chloro-N-(4-chlorophenyl)pyrimidine-4-carboxamide	2-(benzylsulfanyl)-5-chloro-N-(4-chlorophenyl)pyrimidine-4-carboxamide	分子量：390.3 密度：N/A 沸点：N/A 熔点：N/A	901669-02-1	C₁₈H₁₃Cl₂N₃OS
2-(benzylsulfanyl)-5-chloro-N-(2,3-dichlorophenyl)pyrimidine-4-carboxamide	2-(benzylsulfanyl)-5-chloro-N-(2,3-dichlorophenyl)pyrimidine-4-carboxamide	分子量：424.7 密度：N/A 沸点：N/A 熔点：N/A	901669-06-5	C₁₈H₁₂Cl₃N₃OS
2-(benzylsulfanyl)-5-chloro-N-(3,4-dichlorophenyl)pyrimidine-4-carboxamide	2-(benzylsulfanyl)-5-chloro-N-(3,4-dichlorophenyl)pyrimidine-4-carboxamide	分子量：424.7 密度：N/A 沸点：N/A 熔点：N/A	901669-08-7	C₁₈H₁₂Cl₃N₃OS
5-chloro-2-[(2-methylbenzyl)sulfanyl]-N-[2-(trifluoromethyl)phenyl]pyrimidine-4-carboxamide	5-chloro-2-[(2-methylbenzyl)sulfanyl]-N-[2-(trifluoromethyl)phenyl]pyrimidine-4-carboxamide	分子量：437.9 密度：N/A 沸点：N/A 熔点：N/A	885738-57-8	C₂₀H₁₅ClF₃N₃OS
Methyl 4-({[2-(benzylsulfanyl)-5-chloropyrimidin-4-yl]carbonyl}amino)benzoate	Methyl 4-({[2-(benzylsulfanyl)-5-chloropyrimidin-4-yl]carbonyl}amino)benzoate	分子量：413.9 密度：N/A 沸点：N/A 熔点：N/A	901669-15-6	C₂₀H₁₆ClN₃O₃S
2-(benzylsulfanyl)-5-chloro-N-[3-(trifluoromethyl)phenyl]pyrimidine-4-carboxamide	2-(benzylsulfanyl)-5-chloro-N-[3-(trifluoromethyl)phenyl]pyrimidine-4-carboxamide	分子量：423.8 密度：N/A 沸点：N/A 熔点：N/A	901669-21-4	C₁₉H₁₃ClF₃N₃OS
2-(benzylsulfanyl)-5-chloro-N-(2,4-dimethoxyphenyl)-4-pyrimidinecarboxamide	2-(benzylsulfanyl)-5-chloro-N-(2,4-dimethoxyphenyl)-4-pyrimidinecarboxamide	分子量：415.9 密度：N/A 沸点：N/A 熔点：N/A	901669-25-8	C₂₀H₁₈ClN₃O₃S
N-[4-(acetylamino)phenyl]-2-(benzylsulfanyl)-5-chloropyrimidine-4-carboxamide	N-[4-(acetylamino)phenyl]-2-(benzylsulfanyl)-5-chloropyrimidine-4-carboxamide	分子量：412.9 密度：N/A 沸点：N/A 熔点：N/A	901669-30-5	C₂₀H₁₇ClN₄O₂S
2-chloro-N-[(2Z)-5-[(2-fluorobenzyl)sulfonyl]-1,3,4-thiadiazol-2(3H)-ylidene]benzamide	2-chloro-N-[(2Z)-5-[(2-fluorobenzyl)sulfonyl]-1,3,4-thiadiazol-2(3H)-ylidene]benzamide	分子量：411.9 密度：N/A 沸点：N/A 熔点：N/A	895838-35-4	C₁₆H₁₁ClFN₃O₃S₂
Ezlopitant metabolite M17	Ezlopitant metabolite M17	分子量：452.6 密度：N/A 沸点：N/A 熔点：N/A	156749-85-8	C₃₁H₃₆N₂O
Benzyl (S)-3-(4-methoxyphenyl)-2-(1-methylpiperidine-4-carboxamido)propanoate	Benzyl (S)-3-(4-methoxyphenyl)-2-(1-methylpiperidine-4-carboxamido)propanoate	分子量：410.5 密度：N/A 沸点：N/A 熔点：N/A	122225-86-9	C₂₄H₃₀N₂O₄
N-Acetyl-N-[4-methyl-2-[(methylthio)methyl]phenyl]acetamide	N-Acetyl-N-[4-methyl-2-[(methylthio)methyl]phenyl]acetamide	分子量：251.35 密度：N/A 沸点：N/A 熔点：N/A	68882-87-1	C₁₃H₁₇NO₂S
6-Chloro-4-(3-methylpiperidin-1-yl)-3-(phenylsulfonyl)quinoline	6-Chloro-4-(3-methylpiperidin-1-yl)-3-(phenylsulfonyl)quinoline	分子量：400.9 密度：N/A 沸点：N/A 熔点：N/A	895647-35-5	C₂₁H₂₁ClN₂O₂S
8-Bromo-2-(trifluoromethyl)-1,6-naphthyridin-5(6H)-one	8-Bromo-2-(trifluoromethyl)-1,6-naphthyridin-5(6H)-one	分子量：293.04 密度：N/A 沸点：N/A 熔点：N/A	890301-92-5	C₉H₄BrF₃N₂O
1-Methyl-3-(2-methylpropyl)-2,4,5-imidazolidinetrione	1-Methyl-3-(2-methylpropyl)-2,4,5-imidazolidinetrione	分子量：184.19 密度：N/A 沸点：N/A 熔点：N/A	93617-52-8	C₈H₁₂N₂O₃
4-Nitro-6-trifluoromethyl-1,3-benzodithiole-2-thione	4-Nitro-6-trifluoromethyl-1,3-benzodithiole-2-thione	分子量：297.3 密度：N/A 沸点：N/A 熔点：N/A	63417-82-3	C₈H₂F₃NO₂S₃
Diethyl({2-[(propan-2-yl)amino]ethyl})amine	Diethyl({2-[(propan-2-yl)amino]ethyl})amine	分子量：158.28 密度：N/A 沸点：N/A 熔点：N/A	52295-84-8	C₉H₂₂N₂
3-Amino-6-(tert-pentyl)-5,6,7,8-tetrahydrothieno[2,3-b]quinoline-2-carbonitrile	3-Amino-6-(tert-pentyl)-5,6,7,8-tetrahydrothieno[2,3-b]quinoline-2-carbonitrile	分子量：299.4 密度：N/A 沸点：N/A 熔点：N/A	665024-24-8	C₁₇H₂₁N₃S
4-chloro-2-cycloheptyl-3H-imidazo[4,5-c]quinoline	4-chloro-2-cycloheptyl-3H-imidazo[4,5-c]quinoline	分子量：299.8 密度：N/A 沸点：N/A 熔点：N/A	890087-04-4	C₁₇H₁₈ClN₃
2-Methylenenorbornane, (+)-	2-Methylenenorbornane, (+)-	分子量：108.18 密度：N/A 沸点：N/A 熔点：N/A	58001-75-5	C₈H₁₂
Hexanoic acid, 3-amino-2-hydroxy-5-methyl-, (2R,3S)-	Hexanoic acid, 3-amino-2-hydroxy-5-methyl-, (2R,3S)-	分子量：161.20 密度：N/A 沸点：N/A 熔点：N/A	73397-21-4	C₇H₁₅NO₃
3-(4-Methoxyphenyl)-5-[(methylamino)methyl]-1,3-oxazolidin-2-one	3-(4-Methoxyphenyl)-5-[(methylamino)methyl]-1,3-oxazolidin-2-one	分子量：236.27 密度：N/A 沸点：N/A 熔点：N/A	130641-87-1	C₁₂H₁₆N₂O₃
3-(2-Pyridyl)-5-[2-methoxy-5-(3-pyridyl)phenyl]-1,2,4-oxadiazole	3-(2-Pyridyl)-5-[2-methoxy-5-(3-pyridyl)phenyl]-1,2,4-oxadiazole	分子量：330.3 密度：N/A 沸点：N/A 熔点：N/A	453567-62-9	C₁₉H₁₄N₄O₂
4-{[Ethoxy(oxo)acetyl]amino}-2-hydroxybenzoic acid	4-{[Ethoxy(oxo)acetyl]amino}-2-hydroxybenzoic acid	分子量：253.21 密度：N/A 沸点：N/A 熔点：N/A	92289-16-2	C₁₁H₁₁NO₆
1'-[(9-Ethylcarbazol-3-yl)methyl]spiro[1,2-dihydroisoquinoline-4,4'-piperidine]-3-one	1'-[(9-Ethylcarbazol-3-yl)methyl]spiro[1,2-dihydroisoquinoline-4,4'-piperidine]-3-one	分子量：423.5 密度：N/A 沸点：N/A 熔点：N/A	676607-13-9	C₂₈H₂₉N₃O
2-cyano-N-[3-methyl-4-(trifluoromethyl)phenyl]acetamide	2-cyano-N-[3-methyl-4-(trifluoromethyl)phenyl]acetamide	分子量：242.20 密度：N/A 沸点：N/A 熔点：N/A	179637-55-9	C₁₁H₉F₃N₂O