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-(4,6-dihydrothieno[3,4-c]isoxazol-3-yl)-2-(2-oxo-1,3-benzoxazol-3-yl)acetamide	N-(4,6-dihydrothieno[3,4-c]isoxazol-3-yl)-2-(2-oxo-1,3-benzoxazol-3-yl)acetamide	分子量：317.32 密度：N/A 沸点：N/A 熔点：N/A	1207009-24-2	C₁₄H₁₁N₃O₄S
N-(4-(2-(4-(5-chloro-2-methylphenyl)piperazin-1-yl)-2-oxoethyl)thiazol-2-yl)pyrazine-2-carboxamide	N-(4-(2-(4-(5-chloro-2-methylphenyl)piperazin-1-yl)-2-oxoethyl)thiazol-2-yl)pyrazine-2-carboxamide	分子量：456.9 密度：N/A 沸点：N/A 熔点：N/A	1210246-07-3	C₂₁H₂₁ClN₆O₂S
6-(3-bromophenyl)-2-(2-(4-methoxyphenyl)-2-oxoethyl)pyridazin-3(2H)-one	6-(3-bromophenyl)-2-(2-(4-methoxyphenyl)-2-oxoethyl)pyridazin-3(2H)-one	分子量：399.2 密度：N/A 沸点：N/A 熔点：N/A	1210022-12-0	C₁₉H₁₅BrN₂O₃
N-(2-((3-phenyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)oxy)ethyl)-1-(thiophen-2-yl)cyclopentanecarboxamide	N-(2-((3-phenyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)oxy)ethyl)-1-(thiophen-2-yl)cyclopentanecarboxamide	分子量：433.5 密度：N/A 沸点：N/A 熔点：N/A	1209735-43-2	C₂₃H₂₃N₅O₂S
4-((4-Chlorophenyl)sulfonyl)-8-((3,5-dimethylisoxazol-4-yl)sulfonyl)-1-oxa-4,8-diazaspiro[4.5]decane	4-((4-Chlorophenyl)sulfonyl)-8-((3,5-dimethylisoxazol-4-yl)sulfonyl)-1-oxa-4,8-diazaspiro[4.5]decane	分子量：476.0 密度：N/A 沸点：N/A 熔点：N/A	1208837-71-1	C₁₈H₂₂ClN₃O₆S₂
N1-(3-(1H-imidazol-1-yl)propyl)-N2-(2-(cyclohex-1-en-1-yl)ethyl)oxalamide	N1-(3-(1H-imidazol-1-yl)propyl)-N2-(2-(cyclohex-1-en-1-yl)ethyl)oxalamide	分子量：304.39 密度：N/A 沸点：N/A 熔点：N/A	1211827-34-7	C₁₆H₂₄N₄O₂
(2,5-Dimethylfuran-3-yl)(4-((4-methoxyphenyl)sulfonyl)-1-oxa-4,8-diazaspiro[4.5]decan-8-yl)methanone	(2,5-Dimethylfuran-3-yl)(4-((4-methoxyphenyl)sulfonyl)-1-oxa-4,8-diazaspiro[4.5]decan-8-yl)methanone	分子量：434.5 密度：N/A 沸点：N/A 熔点：N/A	1210646-52-8	C₂₁H₂₆N₂O₆S
2-((4-fluorophenyl)thio)-N-(1-(thiophene-2-carbonyl)-1,2,3,4-tetrahydroquinolin-6-yl)acetamide	2-((4-fluorophenyl)thio)-N-(1-(thiophene-2-carbonyl)-1,2,3,4-tetrahydroquinolin-6-yl)acetamide	分子量：426.5 密度：N/A 沸点：N/A 熔点：N/A	1207021-55-3	C₂₂H₁₉FN₂O₂S₂
N-(2-acetyl-1,2,3,4-tetrahydroisoquinolin-7-yl)pyridine-3-sulfonamide	N-(2-acetyl-1,2,3,4-tetrahydroisoquinolin-7-yl)pyridine-3-sulfonamide	分子量：331.4 密度：N/A 沸点：N/A 熔点：N/A	1210860-41-5	C₁₆H₁₇N₃O₃S
N1-(2-fluorophenyl)-N2-(2-(2-methyl-1H-imidazol-1-yl)ethyl)oxalamide	N1-(2-fluorophenyl)-N2-(2-(2-methyl-1H-imidazol-1-yl)ethyl)oxalamide	分子量：290.29 密度：N/A 沸点：N/A 熔点：N/A	1208951-28-3	C₁₄H₁₅FN₄O₂
4-[3-(2-Ethyl-6-methylanilino)-6-methylimidazo[1,2-a]pyridin-2-yl]-2-methoxyphenol	4-[3-(2-Ethyl-6-methylanilino)-6-methylimidazo[1,2-a]pyridin-2-yl]-2-methoxyphenol	分子量：387.5 密度：N/A 沸点：N/A 熔点：N/A	954239-04-4	C₂₄H₂₅N₃O₂
1-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(3-methylbutyl)-6-oxo-1,4,5,6-tetrahydropyridazine-3-carboxamide	1-(1,1-dioxidotetrahydrothiophen-3-yl)-N-(3-methylbutyl)-6-oxo-1,4,5,6-tetrahydropyridazine-3-carboxamide	分子量：329.42 密度：N/A 沸点：N/A 熔点：N/A	1182325-47-8	C₁₄H₂₃N₃O₄S
2-Chloro-4-methyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-YL)pyrimidine	2-Chloro-4-methyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-YL)pyrimidine	分子量：254.52 密度：N/A 沸点：N/A 熔点：N/A	1310405-15-2	C₁₁H₁₆BClN₂O₂
6-methyl-7H-imidazo[1,2-a]pyrazin-8-one	6-methyl-7H-imidazo[1,2-a]pyrazin-8-one	分子量：149.15 密度：N/A 沸点：N/A 熔点：N/A	1124321-45-4	C₇H₇N₃O
2-[5-(Propan-2-yl)-1,2,4-oxadiazol-3-yl]piperidine	2-[5-(Propan-2-yl)-1,2,4-oxadiazol-3-yl]piperidine	分子量：195.26 密度：N/A 沸点：N/A 熔点：N/A	1211390-05-4	C₁₀H₁₇N₃O
(Z)-2-cyano-N-(2,3-dihydro-1,4-benzodioxin-6-yl)-3-(2-methylimidazo[1,2-a]pyridin-3-yl)prop-2-enamide	(Z)-2-cyano-N-(2,3-dihydro-1,4-benzodioxin-6-yl)-3-(2-methylimidazo[1,2-a]pyridin-3-yl)prop-2-enamide	分子量：360.4 密度：N/A 沸点：N/A 熔点：N/A	869633-82-9	C₂₀H₁₆N₄O₃
N-[6-(1H-imidazol-1-yl)pyridin-3-yl]-4-sulfamoylbenzamide	N-[6-(1H-imidazol-1-yl)pyridin-3-yl]-4-sulfamoylbenzamide	分子量：343.4 密度：N/A 沸点：N/A 熔点：N/A	1210352-57-0	C₁₅H₁₃N₅O₃S
2-methyl-N~1~-{[3-methyl-5-(4-methylpiperazino)-1-phenyl-1H-pyrazol-4-yl]methyl}-N~1~-propylbenzamide	2-methyl-N~1~-{[3-methyl-5-(4-methylpiperazino)-1-phenyl-1H-pyrazol-4-yl]methyl}-N~1~-propylbenzamide	分子量：445.6 密度：N/A 沸点：N/A 熔点：N/A	1185100-64-4	C₂₇H₃₅N₅O
3-tert-Butyl-1-(2,3-dimethylphenyl)-1H-pyrazol-5-amine	3-tert-Butyl-1-(2,3-dimethylphenyl)-1H-pyrazol-5-amine	分子量：243.35 密度：N/A 沸点：N/A 熔点：N/A	1193155-46-2	C₁₅H₂₁N₃
N-[2-[[1-(3,4-Dichlorophenyl)-3-(1,1-dimethylethyl)-1H-pyrazol-5-yl]amino]-2-oxoethyl]-N-pentylbenzenepropanamide	N-[2-[[1-(3,4-Dichlorophenyl)-3-(1,1-dimethylethyl)-1H-pyrazol-5-yl]amino]-2-oxoethyl]-N-pentylbenzenepropanamide	分子量：543.5 密度：N/A 沸点：N/A 熔点：N/A	1189684-41-0	C₂₉H₃₆Cl₂N₄O₂
5-amino-1-(2,6-difluorophenyl)-1H-pyrazole-4-carbaldehyde	5-amino-1-(2,6-difluorophenyl)-1H-pyrazole-4-carbaldehyde	分子量：223.18 密度：N/A 沸点：N/A 熔点：N/A	1080562-66-8	C₁₀H₇F₂N₃O
N-(2-acetamido-1,3-benzothiazol-6-yl)benzamide	N-(2-acetamido-1,3-benzothiazol-6-yl)benzamide	分子量：311.4 密度：N/A 沸点：N/A 熔点：N/A	1114604-21-5	C₁₆H₁₃N₃O₂S
(3,4-dimethoxyphenyl)[4-(4-isopropylphenyl)-1,1-dioxido-4H-1,4-benzothiazin-2-yl]methanone	(3,4-dimethoxyphenyl)[4-(4-isopropylphenyl)-1,1-dioxido-4H-1,4-benzothiazin-2-yl]methanone	分子量：463.5 密度：N/A 沸点：N/A 熔点：N/A	1114853-25-6	C₂₆H₂₅NO₅S
4-{[3,5-Dimethyl-2-(3-methylphenyl)pyrazolo[1,5-a]pyrimidin-7-yl]amino}benzamide	4-{[3,5-Dimethyl-2-(3-methylphenyl)pyrazolo[1,5-a]pyrimidin-7-yl]amino}benzamide	分子量：371.4 密度：N/A 沸点：N/A 熔点：N/A	1203111-77-6	C₂₂H₂₁N₅O
2-Fluoro-6-(4-fluorophenyl)benzoyl chloride	2-Fluoro-6-(4-fluorophenyl)benzoyl chloride	分子量：252.64 密度：N/A 沸点：N/A 熔点：N/A	1214364-26-7	C₁₃H₇ClF₂O
N-(azetidin-3-yl)-N-methyl-acetamide	N-(azetidin-3-yl)-N-methyl-acetamide	分子量：128.17 密度：N/A 沸点：N/A 熔点：N/A	935730-59-9	C₆H₁₂N₂O
2-((2-benzyl-3-oxo-2,3-dihydroimidazo[1,2-c]quinazolin-5-yl)thio)-N-(4-methoxybenzyl)acetamide	2-((2-benzyl-3-oxo-2,3-dihydroimidazo[1,2-c]quinazolin-5-yl)thio)-N-(4-methoxybenzyl)acetamide	分子量：484.6 密度：N/A 沸点：N/A 熔点：N/A	1173764-02-7	C₂₇H₂₄N₄O₃S
3-(3,5-Dimethylphenyl)-1-[3-({8-methyl-4-oxo-4H-pyrido[1,2-A]pyrimidin-2-YL}methoxy)phenyl]urea	3-(3,5-Dimethylphenyl)-1-[3-({8-methyl-4-oxo-4H-pyrido[1,2-A]pyrimidin-2-YL}methoxy)phenyl]urea	分子量：428.5 密度：N/A 沸点：N/A 熔点：N/A	932962-66-8	C₂₅H₂₄N₄O₃
5-(4-fluorophenyl)-3-(3,4,5-trimethoxyphenyl)-1H-1,2,4-triazole	5-(4-fluorophenyl)-3-(3,4,5-trimethoxyphenyl)-1H-1,2,4-triazole	分子量：329.32 密度：N/A 沸点：N/A 熔点：N/A	1216593-94-0	C₁₇H₁₆FN₃O₃
N-(2H-1,3-benzodioxol-5-yl)-2-({8-fluoro-5H-pyrimido[5,4-b]indol-4-yl}sulfanyl)acetamide	N-(2H-1,3-benzodioxol-5-yl)-2-({8-fluoro-5H-pyrimido[5,4-b]indol-4-yl}sulfanyl)acetamide	分子量：396.4 密度：N/A 沸点：N/A 熔点：N/A	1115997-48-2	C₁₉H₁₃FN₄O₃S
2-Bromo-5-(2,2-dimethyl-1,3-dioxolan-4-yl)pyridine	2-Bromo-5-(2,2-dimethyl-1,3-dioxolan-4-yl)pyridine	分子量：258.11 密度：N/A 沸点：N/A 熔点：N/A	1080060-14-5	C₁₀H₁₂BrNO₂
2-(4H-3,1-Benzothiazin-2-ylthio)-N-methyl-N-(phenylmethyl)propanamide	2-(4H-3,1-Benzothiazin-2-ylthio)-N-methyl-N-(phenylmethyl)propanamide	分子量：356.5 密度：N/A 沸点：N/A 熔点：N/A	1008387-96-9	C₁₉H₂₀N₂OS₂
5-chloro-N-(4-methylpyrimidin-2-yl)-4-(1H-pyrazol-4-yl)-1,3-thiazol-2-amine	5-chloro-N-(4-methylpyrimidin-2-yl)-4-(1H-pyrazol-4-yl)-1,3-thiazol-2-amine	分子量：292.75 密度：N/A 沸点：N/A 熔点：N/A	1235313-13-9	C₁₁H₉ClN₆S
1-(4-Chloro-3-propoxybenzenesulfonyl)piperidine-4-carboxylic acid	1-(4-Chloro-3-propoxybenzenesulfonyl)piperidine-4-carboxylic acid	分子量：361.8 密度：N/A 沸点：N/A 熔点：N/A	1206092-45-6	C₁₅H₂₀ClNO₅S
2-[4-(4-Tert-butylphenyl)-4-methyl-2,5-dioxoimidazolidin-1-YL]-N-(1-cyanocyclopentyl)acetamide	2-[4-(4-Tert-butylphenyl)-4-methyl-2,5-dioxoimidazolidin-1-YL]-N-(1-cyanocyclopentyl)acetamide	分子量：396.5 密度：N/A 沸点：N/A 熔点：N/A	1240817-41-7	C₂₂H₂₈N₄O₃
N-(1-cyanocycloheptyl)-2-{[2-(4-hydroxypiperidin-1-yl)phenyl]amino}acetamide	N-(1-cyanocycloheptyl)-2-{[2-(4-hydroxypiperidin-1-yl)phenyl]amino}acetamide	分子量：370.5 密度：N/A 沸点：N/A 熔点：N/A	1241619-34-0	C₂₁H₃₀N₄O₂
4-Chloro-2-{[(1-cyano-1,2-dimethylpropyl)carbamoyl]methoxy}benzamide	4-Chloro-2-{[(1-cyano-1,2-dimethylpropyl)carbamoyl]methoxy}benzamide	分子量：323.77 密度：N/A 沸点：N/A 熔点：N/A	1241286-03-2	C₁₅H₁₈ClN₃O₃
1-(2-phenylethenesulfonyl)-N-(2-propyl-2,3-dihydro-1H-isoindol-5-yl)piperidine-4-carboxamide	1-(2-phenylethenesulfonyl)-N-(2-propyl-2,3-dihydro-1H-isoindol-5-yl)piperidine-4-carboxamide	分子量：453.6 密度：N/A 沸点：N/A 熔点：N/A	1241700-78-6	C₂₅H₃₁N₃O₃S
3-Chloro-2-(propan-2-ylsulfanyl)-5-(trifluoromethyl)pyridine	3-Chloro-2-(propan-2-ylsulfanyl)-5-(trifluoromethyl)pyridine	分子量：255.69 密度：N/A 沸点：N/A 熔点：N/A	1881292-85-8	C₉H₉ClF₃NS
3-[(5-bromothiophen-2-yl)methylsulfanyl]-4-methyl-1H-1,2,4-triazol-5-one	3-[(5-bromothiophen-2-yl)methylsulfanyl]-4-methyl-1H-1,2,4-triazol-5-one	分子量：306.2 密度：N/A 沸点：N/A 熔点：N/A	1248942-93-9	C₈H₈BrN₃OS₂
2-(6-Chloropyridine-3-sulfonamido)-6-fluorobenzoic acid	2-(6-Chloropyridine-3-sulfonamido)-6-fluorobenzoic acid	分子量：330.72 密度：N/A 沸点：N/A 熔点：N/A	1356680-53-9	C₁₂H₈ClFN₂O₄S
N-neopentyl-N-(pyridin-4-yl)furan-2-carboxamide	N-neopentyl-N-(pyridin-4-yl)furan-2-carboxamide	分子量：258.32 密度：N/A 沸点：N/A 熔点：N/A	1226431-31-7	C₁₅H₁₈N₂O₂
2-chloro-N-({3-[2-(morpholin-4-yl)ethoxy]phenyl}methyl)pyridine-4-carboxamide	2-chloro-N-({3-[2-(morpholin-4-yl)ethoxy]phenyl}methyl)pyridine-4-carboxamide	分子量：375.8 密度：N/A 沸点：N/A 熔点：N/A	1290291-80-3	C₁₉H₂₂ClN₃O₃
1H-Pyrazole-3-carboxamide, 1-(2-chlorophenyl)-N-(2,3-difluorophenyl)-	1H-Pyrazole-3-carboxamide, 1-(2-chlorophenyl)-N-(2,3-difluorophenyl)-	分子量：333.72 密度：N/A 沸点：N/A 熔点：N/A	1376352-13-4	C₁₆H₁₀ClF₂N₃O
2-(cyclopropylamino)-N-(2-hydroxyphenyl)-1,3-thiazole-4-carboxamide	2-(cyclopropylamino)-N-(2-hydroxyphenyl)-1,3-thiazole-4-carboxamide	分子量：275.33 密度：N/A 沸点：N/A 熔点：N/A	1219551-66-2	C₁₃H₁₃N₃O₂S
N-(1H-benzimidazol-5-yl)-3-bromobenzamide	N-(1H-benzimidazol-5-yl)-3-bromobenzamide	分子量：316.15 密度：N/A 沸点：N/A 熔点：N/A	1219569-90-0	C₁₄H₁₀BrN₃O
(4-((3-(4-Methylpiperidin-1-yl)pyrazin-2-yl)oxy)phenyl)(4-phenylpiperazin-1-yl)methanone	(4-((3-(4-Methylpiperidin-1-yl)pyrazin-2-yl)oxy)phenyl)(4-phenylpiperazin-1-yl)methanone	分子量：457.6 密度：N/A 沸点：N/A 熔点：N/A	1189707-83-2	C₂₇H₃₁N₅O₂
3-((4-(2-chlorophenyl)piperazin-1-yl)sulfonyl)-1-propyl-N-((tetrahydrofuran-2-yl)methyl)-1H-pyrazole-4-carboxamide	3-((4-(2-chlorophenyl)piperazin-1-yl)sulfonyl)-1-propyl-N-((tetrahydrofuran-2-yl)methyl)-1H-pyrazole-4-carboxamide	分子量：496.0 密度：N/A 沸点：N/A 熔点：N/A	1251707-48-8	C₂₂H₃₀ClN₅O₄S
3-{[4-(4-chlorophenyl)piperazin-1-yl]sulfonyl}-1-methyl-N-(4-methylcyclohexyl)-1H-pyrazole-4-carboxamide	3-{[4-(4-chlorophenyl)piperazin-1-yl]sulfonyl}-1-methyl-N-(4-methylcyclohexyl)-1H-pyrazole-4-carboxamide	分子量：480.0 密度：N/A 沸点：N/A 熔点：N/A	1251586-57-8	C₂₂H₃₀ClN₅O₃S
N-(4-isopropylbenzyl)-4-methyl-2-(phenylamino)thiazole-5-carboxamide	N-(4-isopropylbenzyl)-4-methyl-2-(phenylamino)thiazole-5-carboxamide	分子量：365.5 密度：N/A 沸点：N/A 熔点：N/A	1243022-51-6	C₂₁H₂₃N₃OS