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
1,2,5,6-Tetrahydro-2-oxo-4,6-diphenyl-3-pyridinecarbonitrile	1,2,5,6-Tetrahydro-2-oxo-4,6-diphenyl-3-pyridinecarbonitrile	分子量：274.3 密度：N/A 沸点：N/A 熔点：N/A	16232-43-2	C₁₈H₁₄N₂O
4-(4-fluorophenyl)-N-(4-(trifluoromethoxy)phenyl)-6,7-dihydro-3H-imidazo[4,5-c]pyridine-5(4H)-carbothioamide	4-(4-fluorophenyl)-N-(4-(trifluoromethoxy)phenyl)-6,7-dihydro-3H-imidazo[4,5-c]pyridine-5(4H)-carbothioamide	分子量：436.4 密度：N/A 沸点：N/A 熔点：N/A	847407-26-5	C₂₀H₁₆F₄N₄OS
1-(2-chloro-7H-purin-6-yl)piperidine-4-carboxylic acid	1-(2-chloro-7H-purin-6-yl)piperidine-4-carboxylic acid	分子量：281.70 密度：N/A 沸点：N/A 熔点：N/A	919736-51-9	C₁₁H₁₂ClN₅O₂
5-[(1,3-benzoxazol-2-ylsulfanyl)methyl]-2-phenyl[1,2,4]triazolo[1,5-a]pyrimidin-7(4H)-one	5-[(1,3-benzoxazol-2-ylsulfanyl)methyl]-2-phenyl[1,2,4]triazolo[1,5-a]pyrimidin-7(4H)-one	分子量：375.4 密度：N/A 沸点：N/A 熔点：N/A	921104-72-5	C₁₉H₁₃N₅O₂S
2-[(5Z)-5-(3-chlorobenzylidene)-2,4-dioxo-1,3-thiazolidin-3-yl]-N-[2-hydroxy-2-(4-hydroxyphenyl)ethyl]-N-methylacetamide	2-[(5Z)-5-(3-chlorobenzylidene)-2,4-dioxo-1,3-thiazolidin-3-yl]-N-[2-hydroxy-2-(4-hydroxyphenyl)ethyl]-N-methylacetamide	分子量：446.9 密度：N/A 沸点：N/A 熔点：N/A	902321-49-7	C₂₁H₁₉ClN₂O₅S
1,4-Dimethyl N-(triphenylmethyl)-L-aspartate	1,4-Dimethyl N-(triphenylmethyl)-L-aspartate	分子量：403.5 密度：N/A 沸点：N/A 熔点：N/A	116393-72-7	C₂₅H₂₅NO₄
N-{6-[(3,4-dimethoxybenzoyl)amino]-1,3-benzothiazol-2-yl}-2-furamide	N-{6-[(3,4-dimethoxybenzoyl)amino]-1,3-benzothiazol-2-yl}-2-furamide	分子量：423.4 密度：N/A 沸点：N/A 熔点：N/A	921133-75-7	C₂₁H₁₇N₃O₅S
Ethyl 4-(4-(methyloxy)phenyl)-2-(4-morpholinyl)-6-oxo-1,4,5,6-tetrahydro-5-pyrimidinecarboxylate	Ethyl 4-(4-(methyloxy)phenyl)-2-(4-morpholinyl)-6-oxo-1,4,5,6-tetrahydro-5-pyrimidinecarboxylate	分子量：361.4 密度：N/A 沸点：N/A 熔点：N/A	896663-64-2	C₁₈H₂₃N₃O₅
Methyl (E)-3-azido-2-methylprop-2-enoate	Methyl (E)-3-azido-2-methylprop-2-enoate	分子量：141.13 密度：N/A 沸点：N/A 熔点：N/A	1937221-22-1	C₅H₇N₃O₂
3-(5-methyl-7-oxo-3-phenyl-7H-furo[3,2-g]chromen-6-yl)-N-(4H-1,2,4-triazol-4-yl)propanamide	3-(5-methyl-7-oxo-3-phenyl-7H-furo[3,2-g]chromen-6-yl)-N-(4H-1,2,4-triazol-4-yl)propanamide	分子量：414.4 密度：N/A 沸点：N/A 熔点：N/A	921083-22-9	C₂₃H₁₈N₄O₄
(3-(Carbamimidoylcarbamoyl)-2-methyl-6,7,8,9-tetrahydro-5H-cyclohepta[b]pyridin-9-yl)methyl hydrogen sulfate	(3-(Carbamimidoylcarbamoyl)-2-methyl-6,7,8,9-tetrahydro-5H-cyclohepta[b]pyridin-9-yl)methyl hydrogen sulfate	分子量：356.40 密度：N/A 沸点：N/A 熔点：N/A	906549-00-6	C₁₄H₂₀N₄O₅S
2-{[3-cyano-6-(thiophen-2-yl)-4-(trifluoromethyl)pyridin-2-yl]sulfanyl}-N-methylacetamide	2-{[3-cyano-6-(thiophen-2-yl)-4-(trifluoromethyl)pyridin-2-yl]sulfanyl}-N-methylacetamide	分子量：357.4 密度：N/A 沸点：N/A 熔点：N/A	905772-99-8	C₁₄H₁₀F₃N₃OS₂
Methyl 2-(6-oxopiperidin-3-yl)acetate	Methyl 2-(6-oxopiperidin-3-yl)acetate	分子量：171.19 密度：N/A 沸点：N/A 熔点：N/A	1782595-67-8	C₈H₁₃NO₃
(Z)-2-((6-bromo-4H-benzo[d][1,3]dioxin-8-yl)methylene)-3-oxo-2,3-dihydrobenzofuran-6-yl furan-2-carboxylate	(Z)-2-((6-bromo-4H-benzo[d][1,3]dioxin-8-yl)methylene)-3-oxo-2,3-dihydrobenzofuran-6-yl furan-2-carboxylate	分子量：469.2 密度：N/A 沸点：N/A 熔点：N/A	929511-81-9	C₂₂H₁₃BrO₇
Benzyl (3S)-3-(2-hydroxyethyl)piperidine-1-carboxylate	Benzyl (3S)-3-(2-hydroxyethyl)piperidine-1-carboxylate	分子量：263.33 密度：N/A 沸点：N/A 熔点：N/A	115909-90-5	C₁₅H₂₁NO₃
ethyl 3-[1-(1H-benzimidazol-2-yl)-5-hydroxy-3-methyl-1H-pyrazol-4-yl]propanoate	ethyl 3-[1-(1H-benzimidazol-2-yl)-5-hydroxy-3-methyl-1H-pyrazol-4-yl]propanoate	分子量：314.34 密度：N/A 沸点：N/A 熔点：N/A	944782-88-1	C₁₆H₁₈N₄O₃
N-{[5-(3-chlorophenyl)furan-2-yl]methyl}-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2,3-dihydro-1,4-benzodioxine-2-carboxamide	N-{[5-(3-chlorophenyl)furan-2-yl]methyl}-N-(1,1-dioxidotetrahydrothiophen-3-yl)-2,3-dihydro-1,4-benzodioxine-2-carboxamide	分子量：488.0 密度：N/A 沸点：N/A 熔点：N/A	905779-33-1	C₂₄H₂₂ClNO₆S
Ethyl 2-(4-benzylpiperazin-1-yl)-6-(2-methoxyphenyl)-4-oxo-1,4,5,6-tetrahydropyrimidine-5-carboxylate	Ethyl 2-(4-benzylpiperazin-1-yl)-6-(2-methoxyphenyl)-4-oxo-1,4,5,6-tetrahydropyrimidine-5-carboxylate	分子量：450.5 密度：N/A 沸点：N/A 熔点：N/A	925018-05-9	C₂₅H₃₀N₄O₄
Benzocycloheptane58metheno10amino	Benzocycloheptane58metheno10amino	分子量：173.25 密度：N/A 沸点：N/A 熔点：N/A	110267-92-0	C₁₂H₁₅N
3-butoxy-N-(5-(methylsulfonyl)-1,3,4-thiadiazol-2-yl)benzamide	3-butoxy-N-(5-(methylsulfonyl)-1,3,4-thiadiazol-2-yl)benzamide	分子量：355.4 密度：N/A 沸点：N/A 熔点：N/A	905779-14-8	C₁₄H₁₇N₃O₄S₂
(1R,9S,12S)-6-(trifluoromethyl)tricyclo[7.2.1.02,7]dodeca-2(7),3,5-trien-12-amine	(1R,9S,12S)-6-(trifluoromethyl)tricyclo[7.2.1.02,7]dodeca-2(7),3,5-trien-12-amine	分子量：241.25 密度：N/A 沸点：N/A 熔点：N/A	110192-33-1	C₁₃H₁₄F₃N
N-[2-(3,4-dihydroxyphenyl)-2-oxoethyl]-2-[(5Z)-5-(furan-2-ylmethylidene)-4-oxo-2-thioxo-1,3-thiazolidin-3-yl]-N-methylacetamide	N-[2-(3,4-dihydroxyphenyl)-2-oxoethyl]-2-[(5Z)-5-(furan-2-ylmethylidene)-4-oxo-2-thioxo-1,3-thiazolidin-3-yl]-N-methylacetamide	分子量：432.5 密度：N/A 沸点：N/A 熔点：N/A	902329-50-4	C₁₉H₁₆N₂O₆S₂
N-(3-chlorophenyl)-2-{1-[(4-methylpiperazin-1-yl)acetyl]-3-oxopiperazin-2-yl}acetamide	N-(3-chlorophenyl)-2-{1-[(4-methylpiperazin-1-yl)acetyl]-3-oxopiperazin-2-yl}acetamide	分子量：407.9 密度：N/A 沸点：N/A 熔点：N/A	1047980-28-8	C₁₉H₂₆ClN₅O₃
N-[(E)-[(4,6-dimethylpyrimidin-2-yl)amino]{[2-(5-fluoro-1H-indol-3-yl)ethyl]amino}methylidene]-2-methylpropanamide	N-[(E)-[(4,6-dimethylpyrimidin-2-yl)amino]{[2-(5-fluoro-1H-indol-3-yl)ethyl]amino}methylidene]-2-methylpropanamide	分子量：396.5 密度：N/A 沸点：N/A 熔点：N/A	924864-27-7	C₂₁H₂₅FN₆O
(2Z)-2-[(6-bromo-4H-1,3-benzodioxin-8-yl)methylidene]-7-[(3,5-dimethylpiperidin-1-yl)methyl]-6-hydroxy-1-benzofuran-3(2H)-one	(2Z)-2-[(6-bromo-4H-1,3-benzodioxin-8-yl)methylidene]-7-[(3,5-dimethylpiperidin-1-yl)methyl]-6-hydroxy-1-benzofuran-3(2H)-one	分子量：500.4 密度：N/A 沸点：N/A 熔点：N/A	929398-15-2	C₂₅H₂₆BrNO₅
(2Z)-2-[(2E)-3-(2-methoxyphenyl)prop-2-en-1-ylidene]-3-oxo-2,3-dihydro-1-benzofuran-6-yl 4-fluorobenzenesulfonate	(2Z)-2-[(2E)-3-(2-methoxyphenyl)prop-2-en-1-ylidene]-3-oxo-2,3-dihydro-1-benzofuran-6-yl 4-fluorobenzenesulfonate	分子量：452.5 密度：N/A 沸点：N/A 熔点：N/A	929457-40-9	C₂₄H₁₇FO₆S
2-methyl-N-[5-(propylsulfonyl)-1,3,4-thiadiazol-2-yl]propanamide	2-methyl-N-[5-(propylsulfonyl)-1,3,4-thiadiazol-2-yl]propanamide	分子量：277.4 密度：N/A 沸点：N/A 熔点：N/A	901659-58-3	C₉H₁₅N₃O₃S₂
10-O-(3-carboxypropyl)ractopamine ether	10-O-(3-carboxypropyl)ractopamine ether	分子量：387.5 密度：N/A 沸点：N/A 熔点：N/A	911196-29-7	C₂₂H₂₉NO₅
2-[(4-methoxyphenyl)amino]-4-methyl-7-(2-thienyl)-7,8-dihydroquinazolin-5(6H)-one	2-[(4-methoxyphenyl)amino]-4-methyl-7-(2-thienyl)-7,8-dihydroquinazolin-5(6H)-one	分子量：365.5 密度：N/A 沸点：N/A 熔点：N/A	925015-92-5	C₂₀H₁₉N₃O₂S
N-(5-((2-chlorobenzyl)sulfonyl)-1,3,4-thiadiazol-2-yl)-2-(naphthalen-1-yl)acetamide	N-(5-((2-chlorobenzyl)sulfonyl)-1,3,4-thiadiazol-2-yl)-2-(naphthalen-1-yl)acetamide	分子量：458.0 密度：N/A 沸点：N/A 熔点：N/A	901668-03-9	C₂₁H₁₆ClN₃O₃S₂
(2S,3R,4S,5S,6R)-2-((S)-2,3-Dihydroxypropoxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol	(2S,3R,4S,5S,6R)-2-((S)-2,3-Dihydroxypropoxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol	分子量：254.23 密度：N/A 沸点：N/A 熔点：N/A	23202-74-6	C₉H₁₈O₈
3-{[6-tert-butyl-3-cyano-4-(trifluoromethyl)pyridin-2-yl]sulfanyl}-N-(4-methoxyphenyl)propanamide	3-{[6-tert-butyl-3-cyano-4-(trifluoromethyl)pyridin-2-yl]sulfanyl}-N-(4-methoxyphenyl)propanamide	分子量：437.5 密度：N/A 沸点：N/A 熔点：N/A	905786-76-7	C₂₁H₂₂F₃N₃O₂S
N-[3-(1H-benzimidazol-2-yl)-1-(2-methoxyethyl)-4,5-dimethyl-1H-pyrrol-2-yl]furan-2-carboxamide	N-[3-(1H-benzimidazol-2-yl)-1-(2-methoxyethyl)-4,5-dimethyl-1H-pyrrol-2-yl]furan-2-carboxamide	分子量：378.4 密度：N/A 沸点：N/A 熔点：N/A	929807-25-0	C₂₁H₂₂N₄O₃
2-(4-chloro-3-methylphenoxy)-N-(5-(methylsulfonyl)-1,3,4-thiadiazol-2-yl)acetamide	2-(4-chloro-3-methylphenoxy)-N-(5-(methylsulfonyl)-1,3,4-thiadiazol-2-yl)acetamide	分子量：361.8 密度：N/A 沸点：N/A 熔点：N/A	901658-29-5	C₁₂H₁₂ClN₃O₄S₂
(2E)-2-[(5-methoxy-1-methyl-1H-indol-3-yl)methylidene]-3-oxo-2,3-dihydro-1-benzofuran-6-yl 4-chlorobenzenesulfonate	(2E)-2-[(5-methoxy-1-methyl-1H-indol-3-yl)methylidene]-3-oxo-2,3-dihydro-1-benzofuran-6-yl 4-chlorobenzenesulfonate	分子量：495.9 密度：N/A 沸点：N/A 熔点：N/A	929511-84-2	C₂₅H₁₈ClNO₆S
3-[1-(1,3-benzothiazol-2-yl)-5-hydroxy-3-methyl-1H-pyrazol-4-yl]-1-(4-methoxyphenyl)pyrrolidine-2,5-dione	3-[1-(1,3-benzothiazol-2-yl)-5-hydroxy-3-methyl-1H-pyrazol-4-yl]-1-(4-methoxyphenyl)pyrrolidine-2,5-dione	分子量：434.5 密度：N/A 沸点：N/A 熔点：N/A	925026-44-4	C₂₂H₁₈N₄O₄S
1-[(3,5-dimethyl-1,2-oxazol-4-yl)sulfonyl]-N-prop-2-en-1-ylprolinamide	1-[(3,5-dimethyl-1,2-oxazol-4-yl)sulfonyl]-N-prop-2-en-1-ylprolinamide	分子量：313.37 密度：N/A 沸点：N/A 熔点：N/A	1047981-12-3	C₁₃H₁₉N₃O₄S
2-{[6-tert-butyl-3-cyano-4-(trifluoromethyl)-5,6,7,8-tetrahydroquinolin-2-yl]sulfanyl}-N-methylacetamide	2-{[6-tert-butyl-3-cyano-4-(trifluoromethyl)-5,6,7,8-tetrahydroquinolin-2-yl]sulfanyl}-N-methylacetamide	分子量：385.4 密度：N/A 沸点：N/A 熔点：N/A	905787-31-7	C₁₈H₂₂F₃N₃OS
8-(3-(4-(4-fluorophenyl)piperazin-1-yl)propyl)-1,6,7-trimethyl-1H-imidazo[2,1-f]purine-2,4(3H,8H)-dione	8-(3-(4-(4-fluorophenyl)piperazin-1-yl)propyl)-1,6,7-trimethyl-1H-imidazo[2,1-f]purine-2,4(3H,8H)-dione	分子量：453.5 密度：N/A 沸点：N/A 熔点：N/A	923109-14-2	C₂₃H₂₈FN₇O₂
1-(3-Nitro-2-oxo-1-phenyl-1,2-dihydroquinolin-4-yl)piperidine-4-carboxamide	1-(3-Nitro-2-oxo-1-phenyl-1,2-dihydroquinolin-4-yl)piperidine-4-carboxamide	分子量：392.4 密度：N/A 沸点：N/A 熔点：N/A	886159-11-1	C₂₁H₂₀N₄O₄
Methyl 4-({[5-chloro-2-(ethylsulfonyl)pyrimidin-4-yl]carbonyl}amino)benzoate	Methyl 4-({[5-chloro-2-(ethylsulfonyl)pyrimidin-4-yl]carbonyl}amino)benzoate	分子量：383.8 密度：N/A 沸点：N/A 熔点：N/A	880783-90-4	C₁₅H₁₄ClN₃O₅S
8-(2-((2-chlorophenyl)amino)ethyl)-1,6,7-trimethyl-1H-imidazo[2,1-f]purine-2,4(3H,8H)-dione	8-(2-((2-chlorophenyl)amino)ethyl)-1,6,7-trimethyl-1H-imidazo[2,1-f]purine-2,4(3H,8H)-dione	分子量：386.8 密度：N/A 沸点：N/A 熔点：N/A	923151-85-3	C₁₈H₁₉ClN₆O₂
(Z)-8-(2-methoxyphenyl)-2-(2,4,5-trimethoxybenzylidene)-8,9-dihydro-2H-benzofuro[7,6-e][1,3]oxazin-3(7H)-one	(Z)-8-(2-methoxyphenyl)-2-(2,4,5-trimethoxybenzylidene)-8,9-dihydro-2H-benzofuro[7,6-e][1,3]oxazin-3(7H)-one	分子量：475.5 密度：N/A 沸点：N/A 熔点：N/A	929444-78-0	C₂₇H₂₅NO₇
(2Z)-2-(2-chlorobenzylidene)-6-{[(2E)-3-phenylprop-2-en-1-yl]oxy}-1-benzofuran-3(2H)-one	(2Z)-2-(2-chlorobenzylidene)-6-{[(2E)-3-phenylprop-2-en-1-yl]oxy}-1-benzofuran-3(2H)-one	分子量：388.8 密度：N/A 沸点：N/A 熔点：N/A	879805-30-8	C₂₄H₁₇ClO₃
N-[4-([1,3]oxazolo[4,5-b]pyridin-2-yl)benzyl]pentanamide	N-[4-([1,3]oxazolo[4,5-b]pyridin-2-yl)benzyl]pentanamide	分子量：309.4 密度：N/A 沸点：N/A 熔点：N/A	895094-62-9	C₁₈H₁₉N₃O₂
2-[6-(4-fluorophenyl)imidazo[2,1-b][1,3]thiazol-3-yl]-N-(2-methoxyphenyl)acetamide	2-[6-(4-fluorophenyl)imidazo[2,1-b][1,3]thiazol-3-yl]-N-(2-methoxyphenyl)acetamide	分子量：381.4 密度：N/A 沸点：N/A 熔点：N/A	897464-81-2	C₂₀H₁₆FN₃O₂S
3-[(2-chloro-7H-purin-6-yl)sulfanyl]propanoic acid	3-[(2-chloro-7H-purin-6-yl)sulfanyl]propanoic acid	分子量：258.69 密度：N/A 沸点：N/A 熔点：N/A	929832-26-8	C₈H₇ClN₄O₂S
3-(4-chlorophenyl)-1-(methylsulfonyl)-5-phenyl-4,5-dihydro-1H-pyrazole	3-(4-chlorophenyl)-1-(methylsulfonyl)-5-phenyl-4,5-dihydro-1H-pyrazole	分子量：334.8 密度：N/A 沸点：N/A 熔点：N/A	902248-49-1	C₁₆H₁₅ClN₂O₂S
2-{6-[(4-Methoxyphenoxy)methyl][1,2,4]triazolo[3,4-b][1,3,4]thiadiazol-3-yl}quinoline	2-{6-[(4-Methoxyphenoxy)methyl][1,2,4]triazolo[3,4-b][1,3,4]thiadiazol-3-yl}quinoline	分子量：389.4 密度：N/A 沸点：N/A 熔点：N/A	951993-42-3	C₂₀H₁₅N₅O₂S
Methyl N2,N6-diacetyl-L-lysinate	Methyl N2,N6-diacetyl-L-lysinate	分子量：244.29 密度：N/A 沸点：N/A 熔点：N/A	2362-03-0	C₁₁H₂₀N₂O₄