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-6-({1-[2-(trifluoromethyl)benzenesulfonyl]pyrrolidin-3-yl}methoxy)pyridazine	3-Methyl-6-({1-[2-(trifluoromethyl)benzenesulfonyl]pyrrolidin-3-yl}methoxy)pyridazine	分子量：401.4 密度：N/A 沸点：N/A 熔点：N/A	2770615-87-5	C₁₇H₁₈F₃N₃O₃S
Tert-butyl 4-[6-oxo-1-(propan-2-yl)-1,6-dihydropyridazin-3-yl]piperazine-1-carboxylate	Tert-butyl 4-[6-oxo-1-(propan-2-yl)-1,6-dihydropyridazin-3-yl]piperazine-1-carboxylate	分子量：322.40 密度：N/A 沸点：N/A 熔点：N/A	2770616-59-4	C₁₆H₂₆N₄O₃
3-{[1-(4-Methoxy-3-methylbenzenesulfonyl)pyrrolidin-3-yl]methoxy}-6-methylpyridazine	3-{[1-(4-Methoxy-3-methylbenzenesulfonyl)pyrrolidin-3-yl]methoxy}-6-methylpyridazine	分子量：377.5 密度：N/A 沸点：N/A 熔点：N/A	2770621-54-8	C₁₈H₂₃N₃O₄S
3-Tert-butyl-8-(6-ethyl-5-fluoropyrimidin-4-yl)-1-oxa-3,8-diazaspiro[4.5]decane-2,4-dione	3-Tert-butyl-8-(6-ethyl-5-fluoropyrimidin-4-yl)-1-oxa-3,8-diazaspiro[4.5]decane-2,4-dione	分子量：350.4 密度：N/A 沸点：N/A 熔点：N/A	2770631-76-8	C₁₇H₂₃FN₄O₃
3-tert-butyl-8-[2-(2H-1,2,3-triazol-2-yl)ethyl]-1-oxa-3,8-diazaspiro[4.5]decane-2,4-dione	3-tert-butyl-8-[2-(2H-1,2,3-triazol-2-yl)ethyl]-1-oxa-3,8-diazaspiro[4.5]decane-2,4-dione	分子量：321.37 密度：N/A 沸点：N/A 熔点：N/A	2770584-20-6	C₁₅H₂₃N₅O₃
N-(2-methoxyphenyl)-2,3-dimethylimidazo[1,2-b]pyridazine-6-carboxamide	N-(2-methoxyphenyl)-2,3-dimethylimidazo[1,2-b]pyridazine-6-carboxamide	分子量：296.32 密度：N/A 沸点：N/A 熔点：N/A	2770607-27-5	C₁₆H₁₆N₄O₂
3-Tert-butyl-8-(5,6,7,8-tetrahydroquinazolin-4-yl)-1-oxa-3,8-diazaspiro[4.5]decane-2,4-dione	3-Tert-butyl-8-(5,6,7,8-tetrahydroquinazolin-4-yl)-1-oxa-3,8-diazaspiro[4.5]decane-2,4-dione	分子量：358.4 密度：N/A 沸点：N/A 熔点：N/A	2770607-10-6	C₁₉H₂₆N₄O₃
1-{1,6-dimethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl}-4-[3-(trifluoromethyl)phenyl]piperazine	1-{1,6-dimethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl}-4-[3-(trifluoromethyl)phenyl]piperazine	分子量：376.4 密度：N/A 沸点：N/A 熔点：N/A	2326287-71-0	C₁₈H₁₉F₃N₆
N-(2-chlorophenyl)-2,3-dimethylimidazo[1,2-b]pyridazine-6-carboxamide	N-(2-chlorophenyl)-2,3-dimethylimidazo[1,2-b]pyridazine-6-carboxamide	分子量：300.74 密度：N/A 沸点：N/A 熔点：N/A	2770600-90-1	C₁₅H₁₃ClN₄O
N-(4-chloro-2-fluorophenyl)-2,3-dimethylimidazo[1,2-b]pyridazine-6-carboxamide	N-(4-chloro-2-fluorophenyl)-2,3-dimethylimidazo[1,2-b]pyridazine-6-carboxamide	分子量：318.73 密度：N/A 沸点：N/A 熔点：N/A	2770596-50-2	C₁₅H₁₂ClFN₄O
1-(2-Chlorophenyl)-4-{5-methylpyrazolo[1,5-a]pyrimidin-7-yl}piperazine	1-(2-Chlorophenyl)-4-{5-methylpyrazolo[1,5-a]pyrimidin-7-yl}piperazine	分子量：327.8 密度：N/A 沸点：N/A 熔点：N/A	2326517-76-2	C₁₇H₁₈ClN₅
N-(4-bromophenyl)-2,3-dimethylimidazo[1,2-b]pyridazine-6-carboxamide	N-(4-bromophenyl)-2,3-dimethylimidazo[1,2-b]pyridazine-6-carboxamide	分子量：345.19 密度：N/A 沸点：N/A 熔点：N/A	2770594-98-2	C₁₅H₁₃BrN₄O
N1,N1-dimethyl-N4-[(4-methylthiophen-2-yl)methyl]benzene-1,4-diamine	N1,N1-dimethyl-N4-[(4-methylthiophen-2-yl)methyl]benzene-1,4-diamine	分子量：246.37 密度：N/A 沸点：N/A 熔点：N/A	2770591-25-6	C₁₄H₁₈N₂S
3-tert-butyl-8-{1,6-dimethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl}-1-oxa-3,8-diazaspiro[4.5]decane-2,4-dione	3-tert-butyl-8-{1,6-dimethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl}-1-oxa-3,8-diazaspiro[4.5]decane-2,4-dione	分子量：372.4 密度：N/A 沸点：N/A 熔点：N/A	2770632-95-4	C₁₈H₂₄N₆O₃
1-({4-[6-(Pyridin-4-yl)-1,8-naphthyridin-2-yl]piperidin-1-yl}methyl)cyclobutan-1-ol	1-({4-[6-(Pyridin-4-yl)-1,8-naphthyridin-2-yl]piperidin-1-yl}methyl)cyclobutan-1-ol	分子量：374.5 密度：N/A 沸点：N/A 熔点：N/A	2770630-56-1	C₂₃H₂₆N₄O
N-(3,4-dichlorophenyl)-2,3-dimethylimidazo[1,2-b]pyridazine-6-carboxamide	N-(3,4-dichlorophenyl)-2,3-dimethylimidazo[1,2-b]pyridazine-6-carboxamide	分子量：335.2 密度：N/A 沸点：N/A 熔点：N/A	2770581-24-1	C₁₅H₁₂Cl₂N₄O
2-{4-[6-(Pyridin-4-yl)-1,8-naphthyridin-2-yl]piperidin-1-yl}cyclohexan-1-ol	2-{4-[6-(Pyridin-4-yl)-1,8-naphthyridin-2-yl]piperidin-1-yl}cyclohexan-1-ol	分子量：388.5 密度：N/A 沸点：N/A 熔点：N/A	2770626-64-5	C₂₄H₂₈N₄O
3-methyl-2-[(3-methylbut-2-en-1-yl)sulfanyl]-3H,4H-thieno[3,2-d]pyrimidin-4-one	3-methyl-2-[(3-methylbut-2-en-1-yl)sulfanyl]-3H,4H-thieno[3,2-d]pyrimidin-4-one	分子量：266.4 密度：N/A 沸点：N/A 熔点：N/A	2770633-00-4	C₁₂H₁₄N₂OS₂
3-Methyl-6-({1-[4-(2-methyl-1,3-oxazol-4-yl)benzenesulfonyl]pyrrolidin-3-yl}methoxy)pyridazine	3-Methyl-6-({1-[4-(2-methyl-1,3-oxazol-4-yl)benzenesulfonyl]pyrrolidin-3-yl}methoxy)pyridazine	分子量：414.5 密度：N/A 沸点：N/A 熔点：N/A	2770628-67-4	C₂₀H₂₂N₄O₄S
4-[4-(4-Methoxyphenyl)piperazin-1-yl]-2-methyl-6-(trifluoromethyl)pyrimidine	4-[4-(4-Methoxyphenyl)piperazin-1-yl]-2-methyl-6-(trifluoromethyl)pyrimidine	分子量：352.35 密度：N/A 沸点：N/A 熔点：N/A	2329729-90-8	C₁₇H₁₉F₃N₄O
1-({4H,5H,6H-cyclopenta[d][1,3]thiazol-2-yl}methyl)-4-(4-methoxyphenyl)piperazine	1-({4H,5H,6H-cyclopenta[d][1,3]thiazol-2-yl}methyl)-4-(4-methoxyphenyl)piperazine	分子量：329.5 密度：N/A 沸点：N/A 熔点：N/A	2326412-68-2	C₁₈H₂₃N₃OS
3-Tert-butyl-8-(1-methyl-2,6-dioxo-1,2,3,6-tetrahydropyrimidin-4-yl)-1-oxa-3,8-diazaspiro[4.5]decane-2,4-dione	3-Tert-butyl-8-(1-methyl-2,6-dioxo-1,2,3,6-tetrahydropyrimidin-4-yl)-1-oxa-3,8-diazaspiro[4.5]decane-2,4-dione	分子量：350.37 密度：N/A 沸点：N/A 熔点：N/A	2770586-52-0	C₁₆H₂₂N₄O₅
1-(4-bromo-2,5-dimethoxybenzenesulfonyl)-5-chloro-1H-1,2,3-benzotriazole	1-(4-bromo-2,5-dimethoxybenzenesulfonyl)-5-chloro-1H-1,2,3-benzotriazole	分子量：432.7 密度：N/A 沸点：N/A 熔点：N/A	2770589-45-0	C₁₄H₁₁BrClN₃O₄S
3-Tert-butyl-8-[(5-cyclopropyl-1,3,4-oxadiazol-2-yl)methyl]-1-oxa-3,8-diazaspiro[4.5]decane-2,4-dione	3-Tert-butyl-8-[(5-cyclopropyl-1,3,4-oxadiazol-2-yl)methyl]-1-oxa-3,8-diazaspiro[4.5]decane-2,4-dione	分子量：348.4 密度：N/A 沸点：N/A 熔点：N/A	2770627-75-1	C₁₇H₂₄N₄O₄
3-(2,2-Difluoroethyl)-8-(5-nitropyrimidin-2-yl)-1-oxa-3,8-diazaspiro[4.5]decane-2,4-dione	3-(2,2-Difluoroethyl)-8-(5-nitropyrimidin-2-yl)-1-oxa-3,8-diazaspiro[4.5]decane-2,4-dione	分子量：357.27 密度：N/A 沸点：N/A 熔点：N/A	2770627-52-4	C₁₃H₁₃F₂N₅O₅
1-(Morpholin-4-yl)-2-{4-[6-(pyrimidin-5-yl)-1,8-naphthyridin-2-yl]piperidin-1-yl}ethan-1-one	1-(Morpholin-4-yl)-2-{4-[6-(pyrimidin-5-yl)-1,8-naphthyridin-2-yl]piperidin-1-yl}ethan-1-one	分子量：418.5 密度：N/A 沸点：N/A 熔点：N/A	2770626-10-1	C₂₃H₂₆N₆O₂
8-[(3-Methyl-1,2-oxazol-5-yl)methyl]-3-phenyl-1-oxa-3,8-diazaspiro[4.5]decane-2,4-dione	8-[(3-Methyl-1,2-oxazol-5-yl)methyl]-3-phenyl-1-oxa-3,8-diazaspiro[4.5]decane-2,4-dione	分子量：341.4 密度：N/A 沸点：N/A 熔点：N/A	2770640-34-9	C₁₈H₁₉N₃O₄
3-(4-{2,3-Dimethylimidazo[1,2-b]pyridazine-6-carbonyl}piperazin-1-yl)-1,2-benzothiazole	3-(4-{2,3-Dimethylimidazo[1,2-b]pyridazine-6-carbonyl}piperazin-1-yl)-1,2-benzothiazole	分子量：392.5 密度：N/A 沸点：N/A 熔点：N/A	2770633-25-3	C₂₀H₂₀N₆OS
1-[(4-fluorophenyl)methyl]-N-[2-(methylsulfanyl)-4-oxo-3H,4H-thieno[3,2-d]pyrimidin-3-yl]-5-oxopyrrolidine-3-carboxamide	1-[(4-fluorophenyl)methyl]-N-[2-(methylsulfanyl)-4-oxo-3H,4H-thieno[3,2-d]pyrimidin-3-yl]-5-oxopyrrolidine-3-carboxamide	分子量：432.5 密度：N/A 沸点：N/A 熔点：N/A	2770633-83-3	C₁₉H₁₇FN₄O₃S₂
N-[(2-chloro-4-methylphenyl)methyl]-4-[(trifluoromethyl)sulfanyl]aniline	N-[(2-chloro-4-methylphenyl)methyl]-4-[(trifluoromethyl)sulfanyl]aniline	分子量：331.8 密度：N/A 沸点：N/A 熔点：N/A	2327674-08-6	C₁₅H₁₃ClF₃NS
2-[3-(1-benzyl-5-oxopyrrolidin-3-yl)-5-sulfanylidene-4,5-dihydro-1H-1,2,4-triazol-4-yl]-N-(cyclohexylmethyl)acetamide	2-[3-(1-benzyl-5-oxopyrrolidin-3-yl)-5-sulfanylidene-4,5-dihydro-1H-1,2,4-triazol-4-yl]-N-(cyclohexylmethyl)acetamide	分子量：427.6 密度：N/A 沸点：N/A 熔点：N/A	2770594-45-9	C₂₂H₂₉N₅O₂S
N'-[(4-hydroxy-3,4-dihydro-1H-2-benzothiopyran-4-yl)methyl]ethanediamide	N'-[(4-hydroxy-3,4-dihydro-1H-2-benzothiopyran-4-yl)methyl]ethanediamide	分子量：266.32 密度：N/A 沸点：N/A 熔点：N/A	2770635-52-2	C₁₂H₁₄N₂O₃S
5-Chloro-2-[5-(oxolane-3-carbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]pyridine	5-Chloro-2-[5-(oxolane-3-carbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]pyridine	分子量：321.80 密度：N/A 沸点：N/A 熔点：N/A	2770602-61-2	C₁₆H₂₀ClN₃O₂
5-Chloro-2-[5-(3,3-difluorocyclobutanecarbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]pyridine	5-Chloro-2-[5-(3,3-difluorocyclobutanecarbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]pyridine	分子量：341.78 密度：N/A 沸点：N/A 熔点：N/A	2770641-39-7	C₁₆H₁₈ClF₂N₃O
5-Fluoro-2-[5-(oxane-2-carbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]pyridine	5-Fluoro-2-[5-(oxane-2-carbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]pyridine	分子量：319.37 密度：N/A 沸点：N/A 熔点：N/A	2770581-80-9	C₁₇H₂₂FN₃O₂
2-[5-(2,2-Dimethylcyclopropanecarbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]-5-fluoropyridine	2-[5-(2,2-Dimethylcyclopropanecarbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]-5-fluoropyridine	分子量：303.37 密度：N/A 沸点：N/A 熔点：N/A	2770606-86-3	C₁₇H₂₂FN₃O
5-Chloro-2-[5-(oxane-2-carbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]pyridine	5-Chloro-2-[5-(oxane-2-carbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]pyridine	分子量：335.8 密度：N/A 沸点：N/A 熔点：N/A	2770599-88-5	C₁₇H₂₂ClN₃O₂
2-[3-cyclopropyl-6-fluoro-2,4-dioxo-7-(piperidin-1-yl)-1,2,3,4-tetrahydroquinazolin-1-yl]-N,N-dipropylacetamide	2-[3-cyclopropyl-6-fluoro-2,4-dioxo-7-(piperidin-1-yl)-1,2,3,4-tetrahydroquinazolin-1-yl]-N,N-dipropylacetamide	分子量：444.5 密度：N/A 沸点：N/A 熔点：N/A	2770634-17-6	C₂₄H₃₃FN₄O₃
N-[(4-hydroxy-3,4-dihydro-1H-2-benzothiopyran-4-yl)methyl]-2,2-dimethylpropanamide	N-[(4-hydroxy-3,4-dihydro-1H-2-benzothiopyran-4-yl)methyl]-2,2-dimethylpropanamide	分子量：279.4 密度：N/A 沸点：N/A 熔点：N/A	2770605-23-5	C₁₅H₂₁NO₂S
methyl N-{4-[(1,3,4-thiadiazol-2-yl)sulfamoyl]phenyl}carbamate	methyl N-{4-[(1,3,4-thiadiazol-2-yl)sulfamoyl]phenyl}carbamate	分子量：314.3 密度：N/A 沸点：N/A 熔点：N/A	2327679-84-3	C₁₀H₁₀N₄O₄S₂
methyl N-[(4-hydroxy-3,4-dihydro-1H-2-benzothiopyran-4-yl)methyl]carbamate	methyl N-[(4-hydroxy-3,4-dihydro-1H-2-benzothiopyran-4-yl)methyl]carbamate	分子量：253.32 密度：N/A 沸点：N/A 熔点：N/A	2770586-86-0	C₁₂H₁₅NO₃S
N-[(4-hydroxy-3,4-dihydro-1H-2-benzothiopyran-4-yl)methyl]-3,3-dimethylbutanamide	N-[(4-hydroxy-3,4-dihydro-1H-2-benzothiopyran-4-yl)methyl]-3,3-dimethylbutanamide	分子量：293.4 密度：N/A 沸点：N/A 熔点：N/A	2770597-51-6	C₁₆H₂₃NO₂S
4,4,4-Trifluoro-1-[5-(5-fluoropyridin-2-yl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]butan-1-one	4,4,4-Trifluoro-1-[5-(5-fluoropyridin-2-yl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]butan-1-one	分子量：331.31 密度：N/A 沸点：N/A 熔点：N/A	2770632-29-4	C₁₅H₁₇F₄N₃O
5-Bromo-2-[5-(oxane-4-carbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]pyridine	5-Bromo-2-[5-(oxane-4-carbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]pyridine	分子量：380.3 密度：N/A 沸点：N/A 熔点：N/A	2770630-91-4	C₁₇H₂₂BrN₃O₂
5-Chloro-2-[5-(2,2-dimethylcyclopropanecarbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]pyridine	5-Chloro-2-[5-(2,2-dimethylcyclopropanecarbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]pyridine	分子量：319.8 密度：N/A 沸点：N/A 熔点：N/A	2770599-78-3	C₁₇H₂₂ClN₃O
5-Bromo-2-[5-(3,3-difluorocyclobutanecarbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]pyridine	5-Bromo-2-[5-(3,3-difluorocyclobutanecarbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]pyridine	分子量：386.23 密度：N/A 沸点：N/A 熔点：N/A	2770631-06-4	C₁₆H₁₈BrF₂N₃O
3-Chloro-2-{[1-(3,3-difluorocyclobutanecarbonyl)piperidin-3-yl]methoxy}pyridine	3-Chloro-2-{[1-(3,3-difluorocyclobutanecarbonyl)piperidin-3-yl]methoxy}pyridine	分子量：344.78 密度：N/A 沸点：N/A 熔点：N/A	2770617-04-2	C₁₆H₁₉ClF₂N₂O₂
5-Bromo-2-[5-(oxane-2-carbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]pyridine	5-Bromo-2-[5-(oxane-2-carbonyl)-octahydropyrrolo[3,4-c]pyrrol-2-yl]pyridine	分子量：380.3 密度：N/A 沸点：N/A 熔点：N/A	2770634-64-3	C₁₇H₂₂BrN₃O₂
N-(adamantan-1-yl)-2-bromo-4,5-dichlorobenzene-1-sulfonamide	N-(adamantan-1-yl)-2-bromo-4,5-dichlorobenzene-1-sulfonamide	分子量：439.2 密度：N/A 沸点：N/A 熔点：N/A	2770609-57-7	C₁₆H₁₈BrCl₂NO₂S
N-[(4-hydroxy-3,4-dihydro-1H-2-benzothiopyran-4-yl)methyl]-1,3,5-trimethyl-1H-pyrazole-4-carboxamide	N-[(4-hydroxy-3,4-dihydro-1H-2-benzothiopyran-4-yl)methyl]-1,3,5-trimethyl-1H-pyrazole-4-carboxamide	分子量：331.4 密度：N/A 沸点：N/A 熔点：N/A	2770590-41-3	C₁₇H₂₁N₃O₂S