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
3-Bromo-2-fluoro-5-(trifluoromethyl)benzonitrile	3-Bromo-2-fluoro-5-(trifluoromethyl)benzonitrile	分子量：268.01 密度：N/A 沸点：N/A 熔点：N/A	133013-32-8	C₈H₂BrF₄N
N-(1-cyano-1,2-dimethylpropyl)-2-(3,5-dimethyl-4-nitro-1H-pyrazol-1-yl)acetamide	N-(1-cyano-1,2-dimethylpropyl)-2-(3,5-dimethyl-4-nitro-1H-pyrazol-1-yl)acetamide	分子量：293.32 密度：N/A 沸点：N/A 熔点：N/A	957020-35-8	C₁₃H₁₉N₅O₃
N-{1-[(2,3-dihydro-1,4-benzodioxin-2-yl)formohydrazido]-1-oxopropan-2-yl}-2-phenylethene-1-sulfonamide	N-{1-[(2,3-dihydro-1,4-benzodioxin-2-yl)formohydrazido]-1-oxopropan-2-yl}-2-phenylethene-1-sulfonamide	分子量：431.5 密度：N/A 沸点：N/A 熔点：N/A	1028762-03-9	C₂₀H₂₁N₃O₆S
N-{5-[(4-chlorobenzyl)sulfonyl]-1,3,4-thiadiazol-2-yl}-2-fluorobenzamide	N-{5-[(4-chlorobenzyl)sulfonyl]-1,3,4-thiadiazol-2-yl}-2-fluorobenzamide	分子量：411.9 密度：N/A 沸点：N/A 熔点：N/A	892636-74-7	C₁₆H₁₁ClFN₃O₃S₂
2-{6-Methyl-2,4-dioxo-1,3-diazaspiro[4.5]decan-3-yl}acetonitrile	2-{6-Methyl-2,4-dioxo-1,3-diazaspiro[4.5]decan-3-yl}acetonitrile	分子量：221.26 密度：N/A 沸点：N/A 熔点：N/A	876537-08-5	C₁₁H₁₅N₃O₂
2-Benzylaminomethyl-1,2,3,4-tetrahydronaphthalene	2-Benzylaminomethyl-1,2,3,4-tetrahydronaphthalene	分子量：251.4 密度：N/A 沸点：N/A 熔点：N/A	129280-20-2	C₁₈H₂₁N
N-(1-cyanocyclohexyl)-2-[(3,5-difluorophenyl)amino]acetamide	N-(1-cyanocyclohexyl)-2-[(3,5-difluorophenyl)amino]acetamide	分子量：293.31 密度：N/A 沸点：N/A 熔点：N/A	923688-44-2	C₁₅H₁₇F₂N₃O
5,6-dichloro-N-(2-methoxyethyl)-N-[4-(4-nitrophenyl)-1,3-thiazol-2-yl]pyridine-3-carboxamide	5,6-dichloro-N-(2-methoxyethyl)-N-[4-(4-nitrophenyl)-1,3-thiazol-2-yl]pyridine-3-carboxamide	分子量：453.3 密度：N/A 沸点：N/A 熔点：N/A	920900-82-9	C₁₈H₁₄Cl₂N₄O₄S
2-[1-(5,6-dichloropyridin-3-yl)-N-ethylformamido]-N-[4-(morpholin-4-yl)phenyl]acetamide	2-[1-(5,6-dichloropyridin-3-yl)-N-ethylformamido]-N-[4-(morpholin-4-yl)phenyl]acetamide	分子量：437.3 密度：N/A 沸点：N/A 熔点：N/A	924188-43-2	C₂₀H₂₂Cl₂N₄O₃
tert-butyl N-[2-(oxiran-2-yl)-1-phenylethyl]carbamate	tert-butyl N-[2-(oxiran-2-yl)-1-phenylethyl]carbamate	分子量：263.33 密度：N/A 沸点：N/A 熔点：N/A	1643804-96-9	C₁₅H₂₁NO₃
N-(1,3-benzodioxol-5-yl)-3-(1H-pyrrol-1-yl)benzamide	N-(1,3-benzodioxol-5-yl)-3-(1H-pyrrol-1-yl)benzamide	分子量：306.3 密度：N/A 沸点：N/A 熔点：N/A	924249-17-2	C₁₈H₁₄N₂O₃
4-[[(2,6-Dimethylphenyl)amino]carbonyl]benzoic acid methyl ester	4-[[(2,6-Dimethylphenyl)amino]carbonyl]benzoic acid methyl ester	分子量：283.32 密度：N/A 沸点：N/A 熔点：N/A	923756-93-8	C₁₇H₁₇NO₃
1-(2-Fluorobenzenesulfonyl)-4-(prop-2-yn-1-yl)piperazine	1-(2-Fluorobenzenesulfonyl)-4-(prop-2-yn-1-yl)piperazine	分子量：282.34 密度：N/A 沸点：N/A 熔点：N/A	923232-50-2	C₁₃H₁₅FN₂O₂S
6-butyl-4-(o-tolyl)-3,4,6,7-tetrahydro-1H-pyrrolo[3,4-d]pyrimidine-2,5-dione	6-butyl-4-(o-tolyl)-3,4,6,7-tetrahydro-1H-pyrrolo[3,4-d]pyrimidine-2,5-dione	分子量：299.37 密度：N/A 沸点：N/A 熔点：N/A	923690-06-6	C₁₇H₂₁N₃O₂
6-(3-hydroxypropyl)-4-phenyl-3,4,6,7-tetrahydro-1H-pyrrolo[3,4-d]pyrimidine-2,5-dione	6-(3-hydroxypropyl)-4-phenyl-3,4,6,7-tetrahydro-1H-pyrrolo[3,4-d]pyrimidine-2,5-dione	分子量：287.31 密度：N/A 沸点：N/A 熔点：N/A	923689-26-3	C₁₅H₁₇N₃O₃
methyl 1-(2-cyanoethyl)-3-methyl-6-(thiophen-2-yl)-1H-pyrazolo[3,4-b]pyridine-4-carboxylate	methyl 1-(2-cyanoethyl)-3-methyl-6-(thiophen-2-yl)-1H-pyrazolo[3,4-b]pyridine-4-carboxylate	分子量：326.4 密度：N/A 沸点：N/A 熔点：N/A	924424-39-5	C₁₆H₁₄N₄O₂S
N-[(5-bromofuran-2-yl)methyl]-N-(1,1-dioxidotetrahydrothiophen-3-yl)-4-methylbenzamide	N-[(5-bromofuran-2-yl)methyl]-N-(1,1-dioxidotetrahydrothiophen-3-yl)-4-methylbenzamide	分子量：412.3 密度：N/A 沸点：N/A 熔点：N/A	898612-90-3	C₁₇H₁₈BrNO₄S
N-(4-Bromo-2-methylphenyl)isonicotinamide	N-(4-Bromo-2-methylphenyl)isonicotinamide	分子量：291.14 密度：N/A 沸点：N/A 熔点：N/A	923700-78-1	C₁₃H₁₁BrN₂O
1-[(2,3-Dihydro-1-benzofuran-5-yl)methyl]-4-[1-(2-phenylethenesulfonyl)piperidine-4-carbonyl]piperazine	1-[(2,3-Dihydro-1-benzofuran-5-yl)methyl]-4-[1-(2-phenylethenesulfonyl)piperidine-4-carbonyl]piperazine	分子量：495.6 密度：N/A 沸点：N/A 熔点：N/A	925548-05-6	C₂₇H₃₃N₃O₄S
N-[(5-bromofuran-2-yl)methyl]-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-(4-methoxyphenoxy)acetamide	N-[(5-bromofuran-2-yl)methyl]-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2-(4-methoxyphenoxy)acetamide	分子量：458.3 密度：N/A 沸点：N/A 熔点：N/A	898622-90-7	C₁₈H₂₀BrNO₆S
N-[(5-bromofuran-2-yl)methyl]-2-(2,6-dimethylphenoxy)-N-(1,1-dioxidotetrahydrothiophen-3-yl)acetamide	N-[(5-bromofuran-2-yl)methyl]-2-(2,6-dimethylphenoxy)-N-(1,1-dioxidotetrahydrothiophen-3-yl)acetamide	分子量：456.4 密度：N/A 沸点：N/A 熔点：N/A	898622-92-9	C₁₉H₂₂BrNO₅S
N-[4-(4-butoxyphenyl)-1,2,5-oxadiazol-3-yl]-4-ethoxybenzamide	N-[4-(4-butoxyphenyl)-1,2,5-oxadiazol-3-yl]-4-ethoxybenzamide	分子量：381.4 密度：N/A 沸点：N/A 熔点：N/A	898610-86-1	C₂₁H₂₃N₃O₄
N-[4-(4-butoxyphenyl)-1,2,5-oxadiazol-3-yl]pentanamide	N-[4-(4-butoxyphenyl)-1,2,5-oxadiazol-3-yl]pentanamide	分子量：317.4 密度：N/A 沸点：N/A 熔点：N/A	898611-20-6	C₁₇H₂₃N₃O₃
N-(1-cyano-1-cyclopropylethyl)-2-(4-oxo-1,2,3-benzotriazin-3-yl)acetamide	N-(1-cyano-1-cyclopropylethyl)-2-(4-oxo-1,2,3-benzotriazin-3-yl)acetamide	分子量：297.31 密度：N/A 沸点：N/A 熔点：N/A	923110-66-1	C₁₅H₁₅N₅O₂
N-Ethyl-Na(2)-[(2-methylphenyl)methyl]urea	N-Ethyl-Na(2)-[(2-methylphenyl)methyl]urea	分子量：192.26 密度：N/A 沸点：N/A 熔点：N/A	713-10-0	C₁₁H₁₆N₂O
1-[(4-Methylphenyl)sulfonyl]-3-piperidinecarboxamide	1-[(4-Methylphenyl)sulfonyl]-3-piperidinecarboxamide	分子量：282.36 密度：N/A 沸点：N/A 熔点：N/A	886145-60-4	C₁₃H₁₈N₂O₃S
2-(2-formylphenoxy)-N-(3-oxo-1-phenylbutan-2-yl)acetamide	2-(2-formylphenoxy)-N-(3-oxo-1-phenylbutan-2-yl)acetamide	分子量：325.4 密度：N/A 沸点：N/A 熔点：N/A	923735-65-3	C₁₉H₁₉NO₄
N-{[5-(4-bromophenyl)furan-2-yl]methyl}-3-(2-phenylethenesulfonamido)propanamide	N-{[5-(4-bromophenyl)furan-2-yl]methyl}-3-(2-phenylethenesulfonamido)propanamide	分子量：489.4 密度：N/A 沸点：N/A 熔点：N/A	930031-80-4	C₂₂H₂₁BrN₂O₄S
3,5-dimethyl-4-nitro-1-(2-phenoxyethyl)-1H-pyrazole	3,5-dimethyl-4-nitro-1-(2-phenoxyethyl)-1H-pyrazole	分子量：261.28 密度：N/A 沸点：N/A 熔点：N/A	956195-08-7	C₁₃H₁₅N₃O₃
N-(1-cyanocyclohexyl)-2-[(4,5,6-trimethylpyrimidin-2-yl)sulfanyl]propanamide	N-(1-cyanocyclohexyl)-2-[(4,5,6-trimethylpyrimidin-2-yl)sulfanyl]propanamide	分子量：332.5 密度：N/A 沸点：N/A 熔点：N/A	923211-57-8	C₁₇H₂₄N₄OS
1-(3-Fluorobenzenesulfonyl)-4-(prop-2-yn-1-yl)piperazine	1-(3-Fluorobenzenesulfonyl)-4-(prop-2-yn-1-yl)piperazine	分子量：282.34 密度：N/A 沸点：N/A 熔点：N/A	923110-74-1	C₁₃H₁₅FN₂O₂S
N-(3,4-dihydro-2H-1,5-benzodioxepin-7-yl)cyclopropanecarboxamide	N-(3,4-dihydro-2H-1,5-benzodioxepin-7-yl)cyclopropanecarboxamide	分子量：233.26 密度：N/A 沸点：N/A 熔点：N/A	930043-45-1	C₁₃H₁₅NO₃
N-(1-cyano-1-cyclopropylethyl)-2-(3,5-dimethyl-4-nitro-1H-pyrazol-1-yl)acetamide	N-(1-cyano-1-cyclopropylethyl)-2-(3,5-dimethyl-4-nitro-1H-pyrazol-1-yl)acetamide	分子量：291.31 密度：N/A 沸点：N/A 熔点：N/A	956624-04-7	C₁₃H₁₇N₅O₃
N-[(3-Chlorophenyl)methyl]-Na(2)-(3-pyridinylmethyl)urea	N-[(3-Chlorophenyl)methyl]-Na(2)-(3-pyridinylmethyl)urea	分子量：275.73 密度：N/A 沸点：N/A 熔点：N/A	923813-55-2	C₁₄H₁₄ClN₃O
N-(2-chlorophenyl)-1-(4-ethylphenyl)-4-oxo-1,4-dihydropyridazine-3-carboxamide	N-(2-chlorophenyl)-1-(4-ethylphenyl)-4-oxo-1,4-dihydropyridazine-3-carboxamide	分子量：353.8 密度：N/A 沸点：N/A 熔点：N/A	898620-29-6	C₁₉H₁₆ClN₃O₂
N-[2-(dimethylamino)-2-(4-methoxyphenyl)ethyl]-2-(2,4-dimethylquinolin-3-yl)acetamide	N-[2-(dimethylamino)-2-(4-methoxyphenyl)ethyl]-2-(2,4-dimethylquinolin-3-yl)acetamide	分子量：391.5 密度：N/A 沸点：N/A 熔点：N/A	924454-82-0	C₂₄H₂₉N₃O₂
N-cyclopentyl-4-(pyridin-2-yl)piperazine-1-carboxamide	N-cyclopentyl-4-(pyridin-2-yl)piperazine-1-carboxamide	分子量：274.36 密度：N/A 沸点：N/A 熔点：N/A	923249-12-1	C₁₅H₂₂N₄O
n-(4-(((5-Amino-1,3,4-thiadiazol-2-yl)thio)methyl)thiazol-2-yl)acetamide	n-(4-(((5-Amino-1,3,4-thiadiazol-2-yl)thio)methyl)thiazol-2-yl)acetamide	分子量：287.4 密度：N/A 沸点：N/A 熔点：N/A	923127-74-6	C₈H₉N₅OS₃
5-(2-furyl)-N~3~-[3-(methylanilino)propyl]-3-isoxazolecarboxamide	5-(2-furyl)-N~3~-[3-(methylanilino)propyl]-3-isoxazolecarboxamide	分子量：325.4 密度：N/A 沸点：N/A 熔点：N/A	920133-70-6	C₁₈H₁₉N₃O₃
N-(Cyclopropylmethyl)-4-methyl-2-thiazolemethanamine	N-(Cyclopropylmethyl)-4-methyl-2-thiazolemethanamine	分子量：182.29 密度：N/A 沸点：N/A 熔点：N/A	937650-90-3	C₉H₁₄N₂S
CID 16493895	CID 16493895	分子量：322.4 密度：N/A 沸点：N/A 熔点：N/A	178049-55-3	C₁₇H₂₆N₂O₄
2,6-Dimethyl-4-(4-phenylquinazolin-2-yl)morpholine	2,6-Dimethyl-4-(4-phenylquinazolin-2-yl)morpholine	分子量：319.4 密度：N/A 沸点：N/A 熔点：N/A	899972-41-9	C₂₀H₂₁N₃O
5-Bromo-2-(2-pyrrolidin-1-ylethoxy)benzaldehyde	5-Bromo-2-(2-pyrrolidin-1-ylethoxy)benzaldehyde	分子量：298.18 密度：N/A 沸点：N/A 熔点：N/A	866930-38-3	C₁₃H₁₆BrNO₂
1-butyl-2,5-dimethyl-1H-pyrrole-3-carbaldehyde	1-butyl-2,5-dimethyl-1H-pyrrole-3-carbaldehyde	分子量：179.26 密度：N/A 沸点：N/A 熔点：N/A	18870-78-5	C₁₁H₁₇NO
Acetamide,n-[2-(2,3-diphenyl-1h-pyrrol-1-yl)ethyl]-	Acetamide,n-[2-(2,3-diphenyl-1h-pyrrol-1-yl)ethyl]-	分子量：304.4 密度：N/A 沸点：N/A 熔点：N/A	147031-01-4	C₂₀H₂₀N₂O
5-[(4-Chloro-3,5-dimethylphenoxy)methyl]-1,3,4-oxadiazole-2(3H)-thione	5-[(4-Chloro-3,5-dimethylphenoxy)methyl]-1,3,4-oxadiazole-2(3H)-thione	分子量：270.74 密度：N/A 沸点：N/A 熔点：N/A	928710-62-7	C₁₁H₁₁ClN₂O₂S
2-Amino-5-(3,4-dimethylbenzyl)-1,3,4-thiadiazole	2-Amino-5-(3,4-dimethylbenzyl)-1,3,4-thiadiazole	分子量：219.31 密度：N/A 沸点：N/A 熔点：N/A	928710-86-5	C₁₁H₁₃N₃S
5-(2,5-Dimethylbenzyl)-1,3,4-thiadiazol-2-amine	5-(2,5-Dimethylbenzyl)-1,3,4-thiadiazol-2-amine	分子量：219.31 密度：N/A 沸点：N/A 熔点：N/A	928710-89-8	C₁₁H₁₃N₃S
Acetamide,n-[2-(3-methyl-2-phenyl-1h-pyrrol-1-yl)ethyl]-	Acetamide,n-[2-(3-methyl-2-phenyl-1h-pyrrol-1-yl)ethyl]-	分子量：242.32 密度：N/A 沸点：N/A 熔点：N/A	147031-03-6	C₁₅H₁₈N₂O
Ethyl 2-carbamothioyl-4-methyl-1,3-thiazole-5-carboxylate	Ethyl 2-carbamothioyl-4-methyl-1,3-thiazole-5-carboxylate	分子量：230.3 密度：N/A 沸点：N/A 熔点：N/A	948114-31-6	C₈H₁₀N₂O₂S₂