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
1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4,4-difluoropentanoate	1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4,4-difluoropentanoate	分子量：520.5 密度：N/A 沸点：N/A 熔点：N/A	2248267-24-3	C₂₈H₂₂F₂N₂O₆
1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 2-(2-methylcyclopropyl)cyclopropane-1-carboxylate	1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 2-(2-methylcyclopropyl)cyclopropane-1-carboxylate	分子量：285.29 密度：N/A 沸点：N/A 熔点：N/A	2248415-23-6	C₁₆H₁₅NO₄
1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 2-{[(tert-butoxy)carbonyl]amino}-2-(3,3-difluorocyclobutyl)acetate	1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 2-{[(tert-butoxy)carbonyl]amino}-2-(3,3-difluorocyclobutyl)acetate	分子量：410.4 密度：N/A 沸点：N/A 熔点：N/A	2248260-44-6	C₁₉H₂₀F₂N₂O₆
1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 2-[2-(difluoromethyl)phenoxy]acetate	1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 2-[2-(difluoromethyl)phenoxy]acetate	分子量：347.27 密度：N/A 沸点：N/A 熔点：N/A	2248383-81-3	C₁₇H₁₁F₂NO₅
4-{1-[(2,4-Dimethyl-1,3-thiazol-5-yl)methyl]pyrrolidine-3-carbonyl}thiomorpholine	4-{1-[(2,4-Dimethyl-1,3-thiazol-5-yl)methyl]pyrrolidine-3-carbonyl}thiomorpholine	分子量：325.5 密度：N/A 沸点：N/A 熔点：N/A	2877654-69-6	C₁₅H₂₃N₃OS₂
1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 6-phenylpyridine-3-carboxylate	1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 6-phenylpyridine-3-carboxylate	分子量：344.3 密度：N/A 沸点：N/A 熔点：N/A	2248389-24-2	C₂₀H₁₂N₂O₄
1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 2-methyl-1-oxo-1,2-dihydroisoquinoline-4-carboxylate	1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 2-methyl-1-oxo-1,2-dihydroisoquinoline-4-carboxylate	分子量：348.3 密度：N/A 沸点：N/A 熔点：N/A	2248300-03-8	C₁₉H₁₂N₂O₅
1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 1-(4-fluorophenyl)-2,2-dimethylcyclopropane-1-carboxylate	1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 1-(4-fluorophenyl)-2,2-dimethylcyclopropane-1-carboxylate	分子量：353.3 密度：N/A 沸点：N/A 熔点：N/A	2248281-11-8	C₂₀H₁₆FNO₄
1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 6-methoxy-1-methyl-1H-indole-2-carboxylate	1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 6-methoxy-1-methyl-1H-indole-2-carboxylate	分子量：350.3 密度：N/A 沸点：N/A 熔点：N/A	2248377-80-0	C₁₉H₁₄N₂O₅
1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 4-methyl-3-oxo-3,4-dihydro-2H-1,4-benzoxazine-6-carboxylate	1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 4-methyl-3-oxo-3,4-dihydro-2H-1,4-benzoxazine-6-carboxylate	分子量：352.3 密度：N/A 沸点：N/A 熔点：N/A	2248415-36-1	C₁₈H₁₂N₂O₆
1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 4-(difluoromethoxy)-2,6-difluorobenzoate	1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 4-(difluoromethoxy)-2,6-difluorobenzoate	分子量：369.22 密度：N/A 沸点：N/A 熔点：N/A	2248340-43-2	C₁₆H₇F₄NO₅
1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 2-(1-oxo-1,2,3,4-tetrahydroisoquinolin-2-yl)acetate	1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 2-(1-oxo-1,2,3,4-tetrahydroisoquinolin-2-yl)acetate	分子量：350.3 密度：N/A 沸点：N/A 熔点：N/A	2248303-86-6	C₁₉H₁₄N₂O₅
N-({4-fluoro-1-[(1,3-oxazol-4-yl)methyl]piperidin-4-yl}methyl)-2,2-dimethylpropanamide	N-({4-fluoro-1-[(1,3-oxazol-4-yl)methyl]piperidin-4-yl}methyl)-2,2-dimethylpropanamide	分子量：297.37 密度：N/A 沸点：N/A 熔点：N/A	2877708-66-0	C₁₅H₂₄FN₃O₂
1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 1-cyclohexanecarbonylazetidine-3-carboxylate	1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 1-cyclohexanecarbonylazetidine-3-carboxylate	分子量：356.4 密度：N/A 沸点：N/A 熔点：N/A	2248293-53-8	C₁₉H₂₀N₂O₅
2-[2-[(1R)-1-Amino-3-hydroxypropyl]phenoxy]acetamide	2-[2-[(1R)-1-Amino-3-hydroxypropyl]phenoxy]acetamide	分子量：224.26 密度：N/A 沸点：N/A 熔点：N/A	1213530-35-8	C₁₁H₁₆N₂O₃
4-[4-(Morpholine-4-carbonyl)piperidin-1-yl]pyridine-2-carboxamide	4-[4-(Morpholine-4-carbonyl)piperidin-1-yl]pyridine-2-carboxamide	分子量：318.37 密度：N/A 沸点：N/A 熔点：N/A	2877672-54-1	C₁₆H₂₂N₄O₃
4a(2)-Bromo-3a(2)a(2)-(2-phenylethynyl)-1,1a(2):3a(2),1a(2)a(2)-terphenyl	4a(2)-Bromo-3a(2)a(2)-(2-phenylethynyl)-1,1a(2):3a(2),1a(2)a(2)-terphenyl	分子量：409.3 密度：N/A 沸点：N/A 熔点：N/A	1409939-35-0	C₂₆H₁₇Br
2-Methoxy-5,8-dimethyl-9H-carbazole-3-carboxaldehyde	2-Methoxy-5,8-dimethyl-9H-carbazole-3-carboxaldehyde	分子量：253.29 密度：N/A 沸点：N/A 熔点：N/A	18073-16-0	C₁₆H₁₅NO₂
1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 2-methyl-6-(thiophen-3-yl)pyridine-3-carboxylate	1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 2-methyl-6-(thiophen-3-yl)pyridine-3-carboxylate	分子量：364.4 密度：N/A 沸点：N/A 熔点：N/A	2248336-89-0	C₁₉H₁₂N₂O₄S
4-[3-(4,4-Difluoropiperidine-1-carbonyl)pyrrolidin-1-yl]pyridine-2-carboxamide	4-[3-(4,4-Difluoropiperidine-1-carbonyl)pyrrolidin-1-yl]pyridine-2-carboxamide	分子量：338.35 密度：N/A 沸点：N/A 熔点：N/A	2877763-86-3	C₁₆H₂₀F₂N₄O₂
N-{[1-(5-cyanopyridin-2-yl)-4-fluoropiperidin-4-yl]methyl}cyclopropanecarboxamide	N-{[1-(5-cyanopyridin-2-yl)-4-fluoropiperidin-4-yl]methyl}cyclopropanecarboxamide	分子量：302.35 密度：N/A 沸点：N/A 熔点：N/A	2877659-14-6	C₁₆H₁₉FN₄O
1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 2-methyl-1-phenyl-1H-imidazole-5-carboxylate	1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 2-methyl-1-phenyl-1H-imidazole-5-carboxylate	分子量：347.3 密度：N/A 沸点：N/A 熔点：N/A	2248281-12-9	C₁₉H₁₃N₃O₄
N-{[1-(2-cyanopyridin-3-yl)-4-fluoropiperidin-4-yl]methyl}cyclopropanecarboxamide	N-{[1-(2-cyanopyridin-3-yl)-4-fluoropiperidin-4-yl]methyl}cyclopropanecarboxamide	分子量：302.35 密度：N/A 沸点：N/A 熔点：N/A	2877751-36-3	C₁₆H₁₉FN₄O
Methyl 2,4-dimethoxy-I(2)-oxo-I+/--phenylbenzenepropanoate	Methyl 2,4-dimethoxy-I(2)-oxo-I+/--phenylbenzenepropanoate	分子量：314.3 密度：N/A 沸点：N/A 熔点：N/A	1186509-68-1	C₁₈H₁₈O₅
N-{[1-(3-chloro-5-cyanopyridin-2-yl)-4-fluoropiperidin-4-yl]methyl}cyclopropanecarboxamide	N-{[1-(3-chloro-5-cyanopyridin-2-yl)-4-fluoropiperidin-4-yl]methyl}cyclopropanecarboxamide	分子量：336.79 密度：N/A 沸点：N/A 熔点：N/A	2877764-45-7	C₁₆H₁₈ClFN₄O
N-{[1-(4-cyanopyridin-2-yl)-4-fluoropiperidin-4-yl]methyl}cyclopropanecarboxamide	N-{[1-(4-cyanopyridin-2-yl)-4-fluoropiperidin-4-yl]methyl}cyclopropanecarboxamide	分子量：302.35 密度：N/A 沸点：N/A 熔点：N/A	2877751-37-4	C₁₆H₁₉FN₄O
Acetamide, N,Na(2)-[(1-acetylindol-3-yl)methylene]bis-	Acetamide, N,Na(2)-[(1-acetylindol-3-yl)methylene]bis-	分子量：287.31 密度：N/A 沸点：N/A 熔点：N/A	100973-70-4	C₁₅H₁₇N₃O₃
2-(3-Hydroxy-2,2-dimethylpropyl)-4,5-dimethylphenol	2-(3-Hydroxy-2,2-dimethylpropyl)-4,5-dimethylphenol	分子量：208.30 密度：N/A 沸点：N/A 熔点：N/A	2229219-81-0	C₁₃H₂₀O₂
N-{[1-(6-cyanopyridin-2-yl)-4-fluoropiperidin-4-yl]methyl}cyclopropanecarboxamide	N-{[1-(6-cyanopyridin-2-yl)-4-fluoropiperidin-4-yl]methyl}cyclopropanecarboxamide	分子量：302.35 密度：N/A 沸点：N/A 熔点：N/A	2877685-71-5	C₁₆H₁₉FN₄O
1-Pyrrolidinesulfonamide, 3-(dimethylamino)-, (3R)-	1-Pyrrolidinesulfonamide, 3-(dimethylamino)-, (3R)-	分子量：193.27 密度：N/A 沸点：N/A 熔点：N/A	1883810-16-9	C₆H₁₅N₃O₂S
1-(2-{4-[6-(Piperidin-1-yl)pyridazin-3-yl]piperazin-1-yl}ethyl)pyrrolidin-2-one	1-(2-{4-[6-(Piperidin-1-yl)pyridazin-3-yl]piperazin-1-yl}ethyl)pyrrolidin-2-one	分子量：358.5 密度：N/A 沸点：N/A 熔点：N/A	2877764-50-4	C₁₉H₃₀N₆O
1-(2-{4-[2-Methyl-6-(pyrrolidin-1-yl)pyrimidin-4-yl]piperazin-1-yl}ethyl)pyrrolidin-2-one	1-(2-{4-[2-Methyl-6-(pyrrolidin-1-yl)pyrimidin-4-yl]piperazin-1-yl}ethyl)pyrrolidin-2-one	分子量：358.5 密度：N/A 沸点：N/A 熔点：N/A	2877763-90-9	C₁₉H₃₀N₆O
9-Butyl-1,9-dihydro-2,8-dimethyl-6H-purine-6-thione	9-Butyl-1,9-dihydro-2,8-dimethyl-6H-purine-6-thione	分子量：236.34 密度：N/A 沸点：N/A 熔点：N/A	935693-74-6	C₁₁H₁₆N₄S
N-({4-fluoro-1-[4-(trifluoromethyl)-1,3-thiazol-2-yl]piperidin-4-yl}methyl)cyclopropanecarboxamide	N-({4-fluoro-1-[4-(trifluoromethyl)-1,3-thiazol-2-yl]piperidin-4-yl}methyl)cyclopropanecarboxamide	分子量：351.37 密度：N/A 沸点：N/A 熔点：N/A	2877685-87-3	C₁₄H₁₇F₄N₃OS
2-[3-(4,4-Difluoropiperidine-1-carbonyl)pyrrolidin-1-yl]-5,6,7,8-tetrahydroquinoline-3-carbonitrile	2-[3-(4,4-Difluoropiperidine-1-carbonyl)pyrrolidin-1-yl]-5,6,7,8-tetrahydroquinoline-3-carbonitrile	分子量：374.4 密度：N/A 沸点：N/A 熔点：N/A	2877764-54-8	C₂₀H₂₄F₂N₄O
1-{1-[(3,5-Dimethyl-1,2-oxazol-4-yl)methyl]pyrrolidine-3-carbonyl}-4,4-difluoropiperidine	1-{1-[(3,5-Dimethyl-1,2-oxazol-4-yl)methyl]pyrrolidine-3-carbonyl}-4,4-difluoropiperidine	分子量：327.37 密度：N/A 沸点：N/A 熔点：N/A	2877672-55-2	C₁₆H₂₃F₂N₃O₂
5-Bromo-2-[3-(4,4-difluoropiperidine-1-carbonyl)pyrrolidin-1-yl]pyridine	5-Bromo-2-[3-(4,4-difluoropiperidine-1-carbonyl)pyrrolidin-1-yl]pyridine	分子量：374.22 密度：N/A 沸点：N/A 熔点：N/A	2877649-42-6	C₁₅H₁₈BrF₂N₃O
1-(3-cyanoquinolin-2-yl)-N-(oxan-4-yl)piperidine-3-carboxamide	1-(3-cyanoquinolin-2-yl)-N-(oxan-4-yl)piperidine-3-carboxamide	分子量：364.4 密度：N/A 沸点：N/A 熔点：N/A	2877672-57-4	C₂₁H₂₄N₄O₂
1-(4-cyanoquinolin-2-yl)-N-(oxan-4-yl)piperidine-3-carboxamide	1-(4-cyanoquinolin-2-yl)-N-(oxan-4-yl)piperidine-3-carboxamide	分子量：364.4 密度：N/A 沸点：N/A 熔点：N/A	2877649-41-5	C₂₁H₂₄N₄O₂
N-({1-[(3,5-dimethyl-1,2-oxazol-4-yl)methyl]-4-fluoropiperidin-4-yl}methyl)-2,2-dimethylpropanamide	N-({1-[(3,5-dimethyl-1,2-oxazol-4-yl)methyl]-4-fluoropiperidin-4-yl}methyl)-2,2-dimethylpropanamide	分子量：325.4 密度：N/A 沸点：N/A 熔点：N/A	2877762-68-8	C₁₇H₂₈FN₃O₂
4-[3-(Thiomorpholine-4-carbonyl)pyrrolidin-1-yl]pyridine-2-carboxamide	4-[3-(Thiomorpholine-4-carbonyl)pyrrolidin-1-yl]pyridine-2-carboxamide	分子量：320.4 密度：N/A 沸点：N/A 熔点：N/A	2877764-04-8	C₁₅H₂₀N₄O₂S
4-[3-(Morpholine-4-carbonyl)pyrrolidin-1-yl]pyridine-2-carboxamide	4-[3-(Morpholine-4-carbonyl)pyrrolidin-1-yl]pyridine-2-carboxamide	分子量：304.34 密度：N/A 沸点：N/A 熔点：N/A	2877762-70-2	C₁₅H₂₀N₄O₃
4-{1-[(4-methyl-4H-1,2,4-triazol-3-yl)methyl]pyrrolidine-3-carbonyl}thiomorpholine	4-{1-[(4-methyl-4H-1,2,4-triazol-3-yl)methyl]pyrrolidine-3-carbonyl}thiomorpholine	分子量：295.41 密度：N/A 沸点：N/A 熔点：N/A	2877764-06-0	C₁₃H₂₁N₅OS
N-{[1-(3-cyclopropyl-1,2,4-thiadiazol-5-yl)-4-fluoropiperidin-4-yl]methyl}acetamide	N-{[1-(3-cyclopropyl-1,2,4-thiadiazol-5-yl)-4-fluoropiperidin-4-yl]methyl}acetamide	分子量：298.38 密度：N/A 沸点：N/A 熔点：N/A	2877751-45-4	C₁₃H₁₉FN₄OS
6-Methoxy-7-methyl-2H-3,1-benzoxazine-2,4(1H)-dione	6-Methoxy-7-methyl-2H-3,1-benzoxazine-2,4(1H)-dione	分子量：207.18 密度：N/A 沸点：N/A 熔点：N/A	616224-67-0	C₁₀H₉NO₄
4-{1-[(3-Methyl-1,2,4-oxadiazol-5-yl)methyl]pyrrolidine-3-carbonyl}thiomorpholine	4-{1-[(3-Methyl-1,2,4-oxadiazol-5-yl)methyl]pyrrolidine-3-carbonyl}thiomorpholine	分子量：296.39 密度：N/A 沸点：N/A 熔点：N/A	2877686-03-6	C₁₃H₂₀N₄O₂S
1-(6-Methylpyrazin-2-yl)pyrrolidin-3-amine	1-(6-Methylpyrazin-2-yl)pyrrolidin-3-amine	分子量：178.23 密度：N/A 沸点：N/A 熔点：N/A	2748261-69-8	C₉H₁₄N₄
2-[4-(2,4-Difluorophenyl)piperazin-1-yl]-1-(2,6-dimethylmorpholin-4-yl)ethan-1-one	2-[4-(2,4-Difluorophenyl)piperazin-1-yl]-1-(2,6-dimethylmorpholin-4-yl)ethan-1-one	分子量：353.4 密度：N/A 沸点：N/A 熔点：N/A	2877672-59-6	C₁₈H₂₅F₂N₃O₂
1-(5-Bromo-4-methoxypyrimidin-2-yl)-4-cyclopropanecarbonyl-1,4-diazepane	1-(5-Bromo-4-methoxypyrimidin-2-yl)-4-cyclopropanecarbonyl-1,4-diazepane	分子量：355.23 密度：N/A 沸点：N/A 熔点：N/A	2877762-74-6	C₁₄H₁₉BrN₄O₂
4-(1-{[5-(Trifluoromethyl)-1,3,4-oxadiazol-2-yl]methyl}pyrrolidine-3-carbonyl)thiomorpholine	4-(1-{[5-(Trifluoromethyl)-1,3,4-oxadiazol-2-yl]methyl}pyrrolidine-3-carbonyl)thiomorpholine	分子量：350.36 密度：N/A 沸点：N/A 熔点：N/A	2877654-26-5	C₁₃H₁₇F₃N₄O₂S