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-Methyl-2-[3''-(methylsulfonyl)biphenyl-3-yl]-5-(trifluoromethyl)quinoxaline	3-Methyl-2-[3''-(methylsulfonyl)biphenyl-3-yl]-5-(trifluoromethyl)quinoxaline	分子量：442.5 密度：N/A 沸点：N/A 熔点：N/A	1221265-40-2	C₂₃H₁₇F₃N₂O₂S
2-(1H-Benzimidazol-2-ylthio)-N-(4-oxo-2-phenyl-3-thiazolidinyl)acetamide	2-(1H-Benzimidazol-2-ylthio)-N-(4-oxo-2-phenyl-3-thiazolidinyl)acetamide	分子量：384.5 密度：N/A 沸点：N/A 熔点：N/A	1226777-29-2	C₁₈H₁₆N₄O₂S₂
2'-(2-methoxyethyl)-N-(4-methoxyphenyl)-1'-oxo-1',4'-dihydro-2'H-spiro[cyclopentane-1,3'-isoquinoline]-4'-carboxamide	2'-(2-methoxyethyl)-N-(4-methoxyphenyl)-1'-oxo-1',4'-dihydro-2'H-spiro[cyclopentane-1,3'-isoquinoline]-4'-carboxamide	分子量：408.5 密度：N/A 沸点：N/A 熔点：N/A	1212437-65-4	C₂₄H₂₈N₂O₄
1-benzyl-5-oxo-N-[(2E)-5-(2-phenylethyl)-1,3,4-thiadiazol-2(3H)-ylidene]pyrrolidine-3-carboxamide	1-benzyl-5-oxo-N-[(2E)-5-(2-phenylethyl)-1,3,4-thiadiazol-2(3H)-ylidene]pyrrolidine-3-carboxamide	分子量：406.5 密度：N/A 沸点：N/A 熔点：N/A	1144472-41-2	C₂₂H₂₂N₄O₂S
3-[2-(5-bromothiophen-2-yl)-2-oxoethyl]-7-chloro-3-hydroxy-1,3-dihydro-2H-indol-2-one	3-[2-(5-bromothiophen-2-yl)-2-oxoethyl]-7-chloro-3-hydroxy-1,3-dihydro-2H-indol-2-one	分子量：386.6 密度：N/A 沸点：N/A 熔点：N/A	1144487-08-0	C₁₄H₉BrClNO₃S
N-cyclopentyl-3-{[(1,1-dioxidotetrahydrothiophen-3-yl)carbamoyl]amino}benzamide	N-cyclopentyl-3-{[(1,1-dioxidotetrahydrothiophen-3-yl)carbamoyl]amino}benzamide	分子量：365.4 密度：N/A 沸点：N/A 熔点：N/A	1144457-73-7	C₁₇H₂₃N₃O₄S
N-(3-methoxyphenyl)-1-[3-(trifluoromethyl)[1,2,4]triazolo[4,3-b]pyridazin-6-yl]piperidine-3-carboxamide	N-(3-methoxyphenyl)-1-[3-(trifluoromethyl)[1,2,4]triazolo[4,3-b]pyridazin-6-yl]piperidine-3-carboxamide	分子量：420.4 密度：N/A 沸点：N/A 熔点：N/A	1144435-95-9	C₁₉H₁₉F₃N₆O₂
methyl N-[(2'-benzyl-1'-oxo-1',4'-dihydro-2'H-spiro[cyclopentane-1,3'-isoquinolin]-4'-yl)carbonyl]-beta-alaninate	methyl N-[(2'-benzyl-1'-oxo-1',4'-dihydro-2'H-spiro[cyclopentane-1,3'-isoquinolin]-4'-yl)carbonyl]-beta-alaninate	分子量：420.5 密度：N/A 沸点：N/A 熔点：N/A	1212439-27-4	C₂₅H₂₈N₂O₄
1-(2-bromophenyl)-5-oxo-N-(2-oxo-2H-chromen-6-yl)pyrrolidine-3-carboxamide	1-(2-bromophenyl)-5-oxo-N-(2-oxo-2H-chromen-6-yl)pyrrolidine-3-carboxamide	分子量：427.2 密度：N/A 沸点：N/A 熔点：N/A	1144483-37-3	C₂₀H₁₅BrN₂O₄
N-(4-chlorobenzyl)-2'-(2-methoxyethyl)-1'-oxo-1',4'-dihydro-2'H-spiro[cyclopentane-1,3'-isoquinoline]-4'-carboxamide	N-(4-chlorobenzyl)-2'-(2-methoxyethyl)-1'-oxo-1',4'-dihydro-2'H-spiro[cyclopentane-1,3'-isoquinoline]-4'-carboxamide	分子量：426.9 密度：N/A 沸点：N/A 熔点：N/A	1212480-36-8	C₂₄H₂₇ClN₂O₃
(2E)-2-(acetylimino)-N-(bicyclo[2.2.1]hept-5-en-2-ylmethyl)-2,3-dihydro-1,3-benzothiazole-6-carboxamide	(2E)-2-(acetylimino)-N-(bicyclo[2.2.1]hept-5-en-2-ylmethyl)-2,3-dihydro-1,3-benzothiazole-6-carboxamide	分子量：341.4 密度：N/A 沸点：N/A 熔点：N/A	1212301-64-8	C₁₈H₁₉N₃O₂S
N-(3-chloro-4-fluorophenyl)-1-[3-(trifluoromethyl)[1,2,4]triazolo[4,3-b]pyridazin-6-yl]piperidine-3-carboxamide	N-(3-chloro-4-fluorophenyl)-1-[3-(trifluoromethyl)[1,2,4]triazolo[4,3-b]pyridazin-6-yl]piperidine-3-carboxamide	分子量：442.8 密度：N/A 沸点：N/A 熔点：N/A	1144469-23-7	C₁₈H₁₅ClF₄N₆O
1-(2,3-dihydro-1,4-benzodioxin-6-yl)-N-[(2E)-5-(methoxymethyl)-1,3,4-thiadiazol-2(3H)-ylidene]-5-oxopyrrolidine-3-carboxamide	1-(2,3-dihydro-1,4-benzodioxin-6-yl)-N-[(2E)-5-(methoxymethyl)-1,3,4-thiadiazol-2(3H)-ylidene]-5-oxopyrrolidine-3-carboxamide	分子量：390.4 密度：N/A 沸点：N/A 熔点：N/A	1144476-24-3	C₁₇H₁₈N₄O₅S
N-(4-fluorobenzyl)-2'-(2-methoxyethyl)-1'-oxo-1',4'-dihydro-2'H-spiro[cyclopentane-1,3'-isoquinoline]-4'-carboxamide	N-(4-fluorobenzyl)-2'-(2-methoxyethyl)-1'-oxo-1',4'-dihydro-2'H-spiro[cyclopentane-1,3'-isoquinoline]-4'-carboxamide	分子量：410.5 密度：N/A 沸点：N/A 熔点：N/A	1212475-42-7	C₂₄H₂₇FN₂O₃
N-[4-(acetylamino)phenyl]-1-[3-(trifluoromethyl)[1,2,4]triazolo[4,3-b]pyridazin-6-yl]piperidine-3-carboxamide	N-[4-(acetylamino)phenyl]-1-[3-(trifluoromethyl)[1,2,4]triazolo[4,3-b]pyridazin-6-yl]piperidine-3-carboxamide	分子量：447.4 密度：N/A 沸点：N/A 熔点：N/A	1144430-44-3	C₂₀H₂₀F₃N₇O₂
1-(2-methoxybenzyl)-N-[(2E)-5-(methoxymethyl)-1,3,4-thiadiazol-2(3H)-ylidene]-5-oxopyrrolidine-3-carboxamide	1-(2-methoxybenzyl)-N-[(2E)-5-(methoxymethyl)-1,3,4-thiadiazol-2(3H)-ylidene]-5-oxopyrrolidine-3-carboxamide	分子量：376.4 密度：N/A 沸点：N/A 熔点：N/A	1144455-86-6	C₁₇H₂₀N₄O₄S
1-(3-chlorophenyl)-N-[(2E)-5-(methoxymethyl)-1,3,4-thiadiazol-2(3H)-ylidene]-5-oxopyrrolidine-3-carboxamide	1-(3-chlorophenyl)-N-[(2E)-5-(methoxymethyl)-1,3,4-thiadiazol-2(3H)-ylidene]-5-oxopyrrolidine-3-carboxamide	分子量：366.8 密度：N/A 沸点：N/A 熔点：N/A	1144496-16-1	C₁₅H₁₅ClN₄O₃S
1-(4-fluorobenzyl)-N-(4-hydroxyphenyl)-5-oxopyrrolidine-3-carboxamide	1-(4-fluorobenzyl)-N-(4-hydroxyphenyl)-5-oxopyrrolidine-3-carboxamide	分子量：328.3 密度：N/A 沸点：N/A 熔点：N/A	1144440-24-3	C₁₈H₁₇FN₂O₃
1-(3-chlorophenyl)-3-(6-fluoro-1,3,4,9-tetrahydro-2H-beta-carbolin-2-yl)pyrrolidine-2,5-dione	1-(3-chlorophenyl)-3-(6-fluoro-1,3,4,9-tetrahydro-2H-beta-carbolin-2-yl)pyrrolidine-2,5-dione	分子量：397.8 密度：N/A 沸点：N/A 熔点：N/A	1144459-95-9	C₂₁H₁₇ClFN₃O₂
N-(4-chlorophenyl)-N~3~-[(1,1-dioxidotetrahydrothiophen-3-yl)carbamoyl]-beta-alaninamide	N-(4-chlorophenyl)-N~3~-[(1,1-dioxidotetrahydrothiophen-3-yl)carbamoyl]-beta-alaninamide	分子量：359.8 密度：N/A 沸点：N/A 熔点：N/A	1144465-11-1	C₁₄H₁₈ClN₃O₄S
3-(1,3-benzodioxol-5-ylmethyl)-1-(4-fluorophenyl)-7,8-dimethyl-1,2,3,4-tetrahydro-6H-pyrimido[1,2-a][1,3,5]triazin-6-one	3-(1,3-benzodioxol-5-ylmethyl)-1-(4-fluorophenyl)-7,8-dimethyl-1,2,3,4-tetrahydro-6H-pyrimido[1,2-a][1,3,5]triazin-6-one	分子量：408.4 密度：N/A 沸点：N/A 熔点：N/A	1144482-47-2	C₂₂H₂₁FN₄O₃
N-cyclohexyl-2'-(2-methoxyethyl)-1'-oxo-1',4'-dihydro-2'H-spiro[cyclopentane-1,3'-isoquinoline]-4'-carboxamide	N-cyclohexyl-2'-(2-methoxyethyl)-1'-oxo-1',4'-dihydro-2'H-spiro[cyclopentane-1,3'-isoquinoline]-4'-carboxamide	分子量：384.5 密度：N/A 沸点：N/A 熔点：N/A	1212491-36-5	C₂₃H₃₂N₂O₃
N-[(2Z)-1,3-benzothiazol-2(3H)-ylidene]-1-(2-fluorophenyl)-5-oxopyrrolidine-3-carboxamide	N-[(2Z)-1,3-benzothiazol-2(3H)-ylidene]-1-(2-fluorophenyl)-5-oxopyrrolidine-3-carboxamide	分子量：355.4 密度：N/A 沸点：N/A 熔点：N/A	1144466-74-9	C₁₈H₁₄FN₃O₂S
methyl 3-(4-(2,5-difluorophenyl)-4,5,6,7-tetrahydro-3H-imidazo[4,5-c]pyridine-5-carboxamido)propanoate	methyl 3-(4-(2,5-difluorophenyl)-4,5,6,7-tetrahydro-3H-imidazo[4,5-c]pyridine-5-carboxamido)propanoate	分子量：364.35 密度：N/A 沸点：N/A 熔点：N/A	1040704-39-9	C₁₇H₁₈F₂N₄O₃
4-Ethyl-2-methyl-4H-thieno[3,2-b]pyrrole-5-carboxylic acid	4-Ethyl-2-methyl-4H-thieno[3,2-b]pyrrole-5-carboxylic acid	分子量：209.27 密度：N/A 沸点：N/A 熔点：N/A	1051362-36-7	C₁₀H₁₁NO₂S
Ethyl 2-[5-amino-6-(5-phenyl-1,3,4-oxadiazol-2-yl)pyrazin-2-yl]cyclopropanecarboxylate	Ethyl 2-[5-amino-6-(5-phenyl-1,3,4-oxadiazol-2-yl)pyrazin-2-yl]cyclopropanecarboxylate	分子量：351.4 密度：N/A 沸点：N/A 熔点：N/A	1225063-34-2	C₁₈H₁₇N₅O₃
N-Propylphenylalanine ethyl ester	N-Propylphenylalanine ethyl ester	分子量：235.32 密度：N/A 沸点：N/A 熔点：N/A	1220703-75-2	C₁₄H₂₁NO₂
2-[4-(5-cyano-4-{[(dimethylamino)methylene]amino}-2-methoxyphenoxy)piperidin-1-yl]-N-methylacetamide	2-[4-(5-cyano-4-{[(dimethylamino)methylene]amino}-2-methoxyphenoxy)piperidin-1-yl]-N-methylacetamide	分子量：373.4 密度：N/A 沸点：N/A 熔点：N/A	1196531-32-4	C₁₉H₂₇N₅O₃
Tert-butyl 2-amino-5-methyl-4-phenylthiophene-3-carboxylate	Tert-butyl 2-amino-5-methyl-4-phenylthiophene-3-carboxylate	分子量：289.4 密度：N/A 沸点：N/A 熔点：N/A	944578-53-4	C₁₆H₁₉NO₂S
(2R,3S)-1-(2-Chlorobenzoyl)-2-(4-(cyclopentylamino)phenyl)-N-(4-methyl-3-(trifluoromethyl)phenyl)piperidine-3-carboxamide	(2R,3S)-1-(2-Chlorobenzoyl)-2-(4-(cyclopentylamino)phenyl)-N-(4-methyl-3-(trifluoromethyl)phenyl)piperidine-3-carboxamide	分子量：584.1 密度：N/A 沸点：N/A 熔点：N/A	1346623-19-5	C₃₂H₃₃ClF₃N₃O₂
3-Pyrrolidinol, 1-[2-(2,3-dihydro-5-benzofuranyl)ethyl]-, (3R)-	3-Pyrrolidinol, 1-[2-(2,3-dihydro-5-benzofuranyl)ethyl]-, (3R)-	分子量：233.31 密度：N/A 沸点：N/A 熔点：N/A	1190695-09-0	C₁₄H₁₉NO₂
4-Fluoro-2-iodo-6-methylphenol	4-Fluoro-2-iodo-6-methylphenol	分子量：252.02 密度：N/A 沸点：N/A 熔点：N/A	1228093-53-5	C₇H₆FIO
(R)-tert-butyl 3-(2-iodoethyl)pyrrolidine-1-carboxylate	(R)-tert-butyl 3-(2-iodoethyl)pyrrolidine-1-carboxylate	分子量：325.19 密度：N/A 沸点：N/A 熔点：N/A	1228312-22-8	C₁₁H₂₀INO₂
N-(2,6-Diethylphenyl)-5-(4-fluorophenyl)-6-methyl-4-oxothieno[2,3-d]pyrimidine-3(4H)-acetamide	N-(2,6-Diethylphenyl)-5-(4-fluorophenyl)-6-methyl-4-oxothieno[2,3-d]pyrimidine-3(4H)-acetamide	分子量：449.5 密度：N/A 沸点：N/A 熔点：N/A	877041-48-0	C₂₅H₂₄FN₃O₂S
(2S,3R,4R,5S,6R)-5-Fluoro-6-(hydroxymethyl)-2-((4-((4-methoxyphenyl)methyl)-5-(trifluoromethyl)-1H-pyrazol-3-yl)oxy)tetrahydropyran-3,4-diol	(2S,3R,4R,5S,6R)-5-Fluoro-6-(hydroxymethyl)-2-((4-((4-methoxyphenyl)methyl)-5-(trifluoromethyl)-1H-pyrazol-3-yl)oxy)tetrahydropyran-3,4-diol	分子量：436.4 密度：N/A 沸点：N/A 熔点：N/A	702638-25-3	C₁₈H₂₀F₄N₂O₆
(4-(3'-Methoxy-3,4'-bipyridin-2-yloxy)phenyl)(1-methyl-1h-benzo[d]imidazol-2-yl)methanone	(4-(3'-Methoxy-3,4'-bipyridin-2-yloxy)phenyl)(1-methyl-1h-benzo[d]imidazol-2-yl)methanone	分子量：436.5 密度：N/A 沸点：N/A 熔点：N/A	1227173-36-5	C₂₆H₂₀N₄O₃
2-Bromo-N-hydroxy-6-methylnicotinimidamide	2-Bromo-N-hydroxy-6-methylnicotinimidamide	分子量：230.06 密度：N/A 沸点：N/A 熔点：N/A	923288-61-3	C₇H₈BrN₃O
1-[4-(2,3-dihydro-1,4-benzodioxin-2-ylcarbonyl)piperazin-1-yl]-2-(5-methoxy-1H-indol-1-yl)ethanone	1-[4-(2,3-dihydro-1,4-benzodioxin-2-ylcarbonyl)piperazin-1-yl]-2-(5-methoxy-1H-indol-1-yl)ethanone	分子量：435.5 密度：N/A 沸点：N/A 熔点：N/A	1081122-89-5	C₂₄H₂₅N₃O₅
N-(4-chlorobenzyl)-2'-(2-methoxyethyl)-1'-oxo-1',4'-dihydro-2'H-spiro[cyclohexane-1,3'-isoquinoline]-4'-carboxamide	N-(4-chlorobenzyl)-2'-(2-methoxyethyl)-1'-oxo-1',4'-dihydro-2'H-spiro[cyclohexane-1,3'-isoquinoline]-4'-carboxamide	分子量：441.0 密度：N/A 沸点：N/A 熔点：N/A	1212430-87-9	C₂₅H₂₉ClN₂O₃
1-(4-fluorophenyl)-3-(2-methoxybenzyl)-7,8-dimethyl-1,2,3,4-tetrahydro-6H-pyrimido[1,2-a][1,3,5]triazin-6-one	1-(4-fluorophenyl)-3-(2-methoxybenzyl)-7,8-dimethyl-1,2,3,4-tetrahydro-6H-pyrimido[1,2-a][1,3,5]triazin-6-one	分子量：394.4 密度：N/A 沸点：N/A 熔点：N/A	1144485-20-0	C₂₂H₂₃FN₄O₂
4-{[(1,1-dioxidotetrahydrothiophen-3-yl)carbamoyl]amino}-N-phenylbenzamide	4-{[(1,1-dioxidotetrahydrothiophen-3-yl)carbamoyl]amino}-N-phenylbenzamide	分子量：373.4 密度：N/A 沸点：N/A 熔点：N/A	1144429-76-4	C₁₈H₁₉N₃O₄S
N-(1,3-dihydro-2H-benzimidazol-2-ylidene)-1-(2-methoxybenzyl)-5-oxopyrrolidine-3-carboxamide	N-(1,3-dihydro-2H-benzimidazol-2-ylidene)-1-(2-methoxybenzyl)-5-oxopyrrolidine-3-carboxamide	分子量：364.4 密度：N/A 沸点：N/A 熔点：N/A	1144486-10-1	C₂₀H₂₀N₄O₃
Methyl 3-({[2-(1,3-benzothiazol-2-yl)pyrrolidin-1-yl]carbonyl}amino)benzoate	Methyl 3-({[2-(1,3-benzothiazol-2-yl)pyrrolidin-1-yl]carbonyl}amino)benzoate	分子量：381.4 密度：N/A 沸点：N/A 熔点：N/A	1144467-22-0	C₂₀H₁₉N₃O₃S
2-[(2-Hydroxyethyl)sulfanyl]-1-(3-methylphenyl)ethan-1-one	2-[(2-Hydroxyethyl)sulfanyl]-1-(3-methylphenyl)ethan-1-one	分子量：210.29 密度：N/A 沸点：N/A 熔点：N/A	1157306-41-6	C₁₁H₁₄O₂S
1-(3,4-Dimethylphenyl)-2-((2-hydroxyethyl)thio)ethan-1-one	1-(3,4-Dimethylphenyl)-2-((2-hydroxyethyl)thio)ethan-1-one	分子量：224.32 密度：N/A 沸点：N/A 熔点：N/A	1157217-99-6	C₁₂H₁₆O₂S
1-(3-Chlorophenyl)-2-(ethylsulfanyl)ethan-1-one	1-(3-Chlorophenyl)-2-(ethylsulfanyl)ethan-1-one	分子量：214.71 密度：N/A 沸点：N/A 熔点：N/A	1157221-56-1	C₁₀H₁₁ClOS
1-(3-Bromophenyl)-2-(ethylthio)ethan-1-one	1-(3-Bromophenyl)-2-(ethylthio)ethan-1-one	分子量：259.16 密度：N/A 沸点：N/A 熔点：N/A	1157204-81-3	C₁₀H₁₁BrOS
1-(Ethylsulfanyl)-3-(2-fluorophenyl)propan-2-one	1-(Ethylsulfanyl)-3-(2-fluorophenyl)propan-2-one	分子量：212.29 密度：N/A 沸点：N/A 熔点：N/A	1157205-63-4	C₁₁H₁₃FOS
1-(3,4-Dihydroxyphenyl)-2-(propylthio)ethan-1-one	1-(3,4-Dihydroxyphenyl)-2-(propylthio)ethan-1-one	分子量：226.29 密度：N/A 沸点：N/A 熔点：N/A	1157365-61-1	C₁₁H₁₄O₃S
2-(4-Chlorophenyl)-2-(dimethylamino)propanoic acid	2-(4-Chlorophenyl)-2-(dimethylamino)propanoic acid	分子量：227.69 密度：N/A 沸点：N/A 熔点：N/A	1157479-33-8	C₁₁H₁₄ClNO₂