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
2-(3,5-dimethoxyphenyl)-N-(2-methoxyphenyl)-5-methyl-7-(pyridin-4-yl)-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide	2-(3,5-dimethoxyphenyl)-N-(2-methoxyphenyl)-5-methyl-7-(pyridin-4-yl)-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide	分子量：498.5 密度：N/A 沸点：N/A 熔点：N/A	539831-97-5	C₂₇H₂₆N₆O₄
9-(2,5-dimethoxyphenyl)-2-(3-methylphenyl)-4H,5H,6H,7H,8H,9H-[1,2,4]triazolo[3,2-b]quinazolin-8-one	9-(2,5-dimethoxyphenyl)-2-(3-methylphenyl)-4H,5H,6H,7H,8H,9H-[1,2,4]triazolo[3,2-b]quinazolin-8-one	分子量：416.5 密度：N/A 沸点：N/A 熔点：N/A	539840-43-2	C₂₄H₂₄N₄O₃
2-(3-methylphenyl)-9-(3,4,5-trimethoxyphenyl)-5,6,7,9-tetrahydro[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	2-(3-methylphenyl)-9-(3,4,5-trimethoxyphenyl)-5,6,7,9-tetrahydro[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	分子量：446.5 密度：N/A 沸点：N/A 熔点：N/A	539840-48-7	C₂₅H₂₆N₄O₄
9-(4-methoxyphenyl)-2-(o-tolyl)-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	9-(4-methoxyphenyl)-2-(o-tolyl)-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	分子量：386.4 密度：N/A 沸点：N/A 熔点：N/A	539840-86-3	C₂₃H₂₂N₄O₂
9-(3-methoxyphenyl)-2-(4-methoxyphenyl)-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	9-(3-methoxyphenyl)-2-(4-methoxyphenyl)-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	分子量：402.4 密度：N/A 沸点：N/A 熔点：N/A	539841-27-5	C₂₃H₂₂N₄O₃
9-(2,3-dimethoxyphenyl)-2-(4-methoxyphenyl)-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	9-(2,3-dimethoxyphenyl)-2-(4-methoxyphenyl)-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	分子量：432.5 密度：N/A 沸点：N/A 熔点：N/A	539841-29-7	C₂₄H₂₄N₄O₄
9-(1,3-benzodioxol-5-yl)-2-(3,4,5-trimethoxyphenyl)-5,6,7,9-tetrahydro[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	9-(1,3-benzodioxol-5-yl)-2-(3,4,5-trimethoxyphenyl)-5,6,7,9-tetrahydro[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	分子量：476.5 密度：N/A 沸点：N/A 熔点：N/A	539845-25-5	C₂₅H₂₄N₄O₆
2-(4-hydroxyphenyl)-9-(m-tolyl)-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	2-(4-hydroxyphenyl)-9-(m-tolyl)-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	分子量：372.4 密度：N/A 沸点：N/A 熔点：N/A	539847-48-8	C₂₂H₂₀N₄O₂
2-(3-hydroxyphenyl)-9-(4-methoxyphenyl)-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	2-(3-hydroxyphenyl)-9-(4-methoxyphenyl)-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	分子量：388.4 密度：N/A 沸点：N/A 熔点：N/A	539847-73-9	C₂₂H₂₀N₄O₃
2-(3-chlorophenyl)-9-(pyridin-4-yl)-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	2-(3-chlorophenyl)-9-(pyridin-4-yl)-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	分子量：377.8 密度：N/A 沸点：N/A 熔点：N/A	539848-30-1	C₂₀H₁₆ClN₅O
2-(3-chlorophenyl)-9-(2-methoxyphenyl)-5,6,7,9-tetrahydro[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	2-(3-chlorophenyl)-9-(2-methoxyphenyl)-5,6,7,9-tetrahydro[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	分子量：406.9 密度：N/A 沸点：N/A 熔点：N/A	539848-38-9	C₂₂H₁₉ClN₄O₂
2-(3-chlorophenyl)-9-(2,3-dimethoxyphenyl)-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	2-(3-chlorophenyl)-9-(2,3-dimethoxyphenyl)-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	分子量：436.9 密度：N/A 沸点：N/A 熔点：N/A	539848-39-0	C₂₃H₂₁ClN₄O₃
2-(3-chlorophenyl)-9-(3,4-dimethoxyphenyl)-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	2-(3-chlorophenyl)-9-(3,4-dimethoxyphenyl)-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	分子量：436.9 密度：N/A 沸点：N/A 熔点：N/A	539848-40-3	C₂₃H₂₁ClN₄O₃
2-(3-chlorophenyl)-9-(4-ethoxy-3-methoxyphenyl)-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	2-(3-chlorophenyl)-9-(4-ethoxy-3-methoxyphenyl)-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	分子量：450.9 密度：N/A 沸点：N/A 熔点：N/A	539848-46-9	C₂₄H₂₃ClN₄O₃
2-(4-(dimethylamino)phenyl)-9-(4-fluorophenyl)-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	2-(4-(dimethylamino)phenyl)-9-(4-fluorophenyl)-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	分子量：403.5 密度：N/A 沸点：N/A 熔点：N/A	540477-23-4	C₂₃H₂₂FN₅O
9-(4-chlorophenyl)-2-(4-(dimethylamino)phenyl)-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	9-(4-chlorophenyl)-2-(4-(dimethylamino)phenyl)-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	分子量：419.9 密度：N/A 沸点：N/A 熔点：N/A	540477-29-0	C₂₃H₂₂ClN₅O
9-(2,5-dimethoxyphenyl)-6,6-dimethyl-2-(3-methylphenyl)-4H,5H,6H,7H,8H,9H-[1,2,4]triazolo[3,2-b]quinazolin-8-one	9-(2,5-dimethoxyphenyl)-6,6-dimethyl-2-(3-methylphenyl)-4H,5H,6H,7H,8H,9H-[1,2,4]triazolo[3,2-b]quinazolin-8-one	分子量：444.5 密度：N/A 沸点：N/A 熔点：N/A	540478-64-6	C₂₆H₂₈N₄O₃
9-(4-hydroxyphenyl)-6,6-dimethyl-2-(m-tolyl)-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	9-(4-hydroxyphenyl)-6,6-dimethyl-2-(m-tolyl)-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	分子量：400.5 密度：N/A 沸点：N/A 熔点：N/A	540478-76-0	C₂₄H₂₄N₄O₂
9-(3,4-dimethoxyphenyl)-2-(4-methoxyphenyl)-6,6-dimethyl-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	9-(3,4-dimethoxyphenyl)-2-(4-methoxyphenyl)-6,6-dimethyl-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	分子量：460.5 密度：N/A 沸点：N/A 熔点：N/A	540479-42-3	C₂₆H₂₈N₄O₄
9-(4-ethoxyphenyl)-2-(4-methoxyphenyl)-6,6-dimethyl-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	9-(4-ethoxyphenyl)-2-(4-methoxyphenyl)-6,6-dimethyl-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	分子量：444.5 密度：N/A 沸点：N/A 熔点：N/A	540479-58-1	C₂₆H₂₈N₄O₃
9-(benzo[d][1,3]dioxol-5-yl)-2-(3,4-dimethoxyphenyl)-6,6-dimethyl-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	9-(benzo[d][1,3]dioxol-5-yl)-2-(3,4-dimethoxyphenyl)-6,6-dimethyl-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	分子量：474.5 密度：N/A 沸点：N/A 熔点：N/A	540480-74-8	C₂₆H₂₆N₄O₅
2-(4-hydroxyphenyl)-6,6-dimethyl-9-phenyl-4H,5H,6H,7H,8H,9H-[1,2,4]triazolo[3,2-b]quinazolin-8-one	2-(4-hydroxyphenyl)-6,6-dimethyl-9-phenyl-4H,5H,6H,7H,8H,9H-[1,2,4]triazolo[3,2-b]quinazolin-8-one	分子量：386.4 密度：N/A 沸点：N/A 熔点：N/A	540485-89-0	C₂₃H₂₂N₄O₂
2-(3-chlorophenyl)-9-(3,4-dimethoxyphenyl)-6,6-dimethyl-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	2-(3-chlorophenyl)-9-(3,4-dimethoxyphenyl)-6,6-dimethyl-5,6,7,9-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	分子量：464.9 密度：N/A 沸点：N/A 熔点：N/A	540487-06-7	C₂₅H₂₅ClN₄O₃
2-[4-(dimethylamino)phenyl]-6,6-dimethyl-9-phenyl-5,6,7,9-tetrahydro[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	2-[4-(dimethylamino)phenyl]-6,6-dimethyl-9-phenyl-5,6,7,9-tetrahydro[1,2,4]triazolo[5,1-b]quinazolin-8(4H)-one	分子量：413.5 密度：N/A 沸点：N/A 熔点：N/A	540501-74-4	C₂₅H₂₇N₅O
N-(2-methoxyphenyl)-5-methyl-2-(pyridin-3-yl)-7-(pyridin-4-yl)-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide	N-(2-methoxyphenyl)-5-methyl-2-(pyridin-3-yl)-7-(pyridin-4-yl)-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide	分子量：439.5 密度：N/A 沸点：N/A 熔点：N/A	540504-50-5	C₂₄H₂₁N₇O₂
N,7-bis(2-methoxyphenyl)-5-methyl-2-(pyridin-3-yl)-4H,7H-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide	N,7-bis(2-methoxyphenyl)-5-methyl-2-(pyridin-3-yl)-4H,7H-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide	分子量：468.5 密度：N/A 沸点：N/A 熔点：N/A	540504-56-1	C₂₆H₂₄N₆O₃
2-(2-chlorophenyl)-N-(2-methoxyphenyl)-5-methyl-7-(thiophen-2-yl)-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide	2-(2-chlorophenyl)-N-(2-methoxyphenyl)-5-methyl-7-(thiophen-2-yl)-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide	分子量：478.0 密度：N/A 沸点：N/A 熔点：N/A	540505-31-5	C₂₄H₂₀ClN₅O₂S
7-(4-fluorophenyl)-2-(3-hydroxypropyl)-N-(2-methoxyphenyl)-5-methyl-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide	7-(4-fluorophenyl)-2-(3-hydroxypropyl)-N-(2-methoxyphenyl)-5-methyl-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide	分子量：437.5 密度：N/A 沸点：N/A 熔点：N/A	540506-51-2	C₂₃H₂₄FN₅O₃
2-(3-hydroxypropyl)-N-(2-methoxyphenyl)-5-methyl-7-(pyridin-4-yl)-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide	2-(3-hydroxypropyl)-N-(2-methoxyphenyl)-5-methyl-7-(pyridin-4-yl)-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide	分子量：420.5 密度：N/A 沸点：N/A 熔点：N/A	540506-72-7	C₂₂H₂₄N₆O₃
7-(2,3-dimethoxyphenyl)-2-(3-hydroxypropyl)-N-(2-methoxyphenyl)-5-methyl-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide	7-(2,3-dimethoxyphenyl)-2-(3-hydroxypropyl)-N-(2-methoxyphenyl)-5-methyl-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide	分子量：479.5 密度：N/A 沸点：N/A 熔点：N/A	540506-86-3	C₂₅H₂₉N₅O₅
7-(3,4-dimethoxyphenyl)-2-(3-hydroxypropyl)-N-(2-methoxyphenyl)-5-methyl-4H,7H-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide	7-(3,4-dimethoxyphenyl)-2-(3-hydroxypropyl)-N-(2-methoxyphenyl)-5-methyl-4H,7H-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide	分子量：479.5 密度：N/A 沸点：N/A 熔点：N/A	540506-88-5	C₂₅H₂₉N₅O₅
7-(4-ethoxyphenyl)-2-(3-hydroxypropyl)-N-(2-methoxyphenyl)-5-methyl-4H,7H-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide	7-(4-ethoxyphenyl)-2-(3-hydroxypropyl)-N-(2-methoxyphenyl)-5-methyl-4H,7H-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide	分子量：463.5 密度：N/A 沸点：N/A 熔点：N/A	540507-18-4	C₂₅H₂₉N₅O₄
3-Bromo-6-chloro-2-nitropyridine	3-Bromo-6-chloro-2-nitropyridine	分子量：237.44 密度：N/A 沸点：N/A 熔点：N/A	1805409-46-4	C₅H₂BrClN₂O₂
3-[3-(Dimethylamino)phenyl]-2-propenenitrile	3-[3-(Dimethylamino)phenyl]-2-propenenitrile	分子量：172.23 密度：N/A 沸点：N/A 熔点：N/A	76889-34-4	C₁₁H₁₂N₂
5-(2-Bromo-4-fluorophenoxy)-4-chloropyrimidine	5-(2-Bromo-4-fluorophenoxy)-4-chloropyrimidine	分子量：303.51 密度：N/A 沸点：N/A 熔点：N/A	2169919-47-3	C₁₀H₅BrClFN₂O
1-Chloro-3-(3-fluoro-2-mercaptophenyl)propan-2-one	1-Chloro-3-(3-fluoro-2-mercaptophenyl)propan-2-one	分子量：218.68 密度：N/A 沸点：N/A 熔点：N/A	1804252-24-1	C₉H₈ClFOS
5-(Difluoromethyl)-1,3-dimethylpyrazol-4-amine;hydrochloride	5-(Difluoromethyl)-1,3-dimethylpyrazol-4-amine;hydrochloride	分子量：197.61 密度：N/A 沸点：N/A 熔点：N/A	1946813-55-3	C₆H₁₀ClF₂N₃
5-bromo-N,N-dimethylfuran-2-amine	5-bromo-N,N-dimethylfuran-2-amine	分子量：190.04 密度：N/A 沸点：N/A 熔点：N/A	1622843-91-7	C₆H₈BrNO
2-(4-Methoxy-3-nitrophenyl)propan-2-ol	2-(4-Methoxy-3-nitrophenyl)propan-2-ol	分子量：211.21 密度：N/A 沸点：N/A 熔点：N/A	2089924-87-6	C₁₀H₁₃NO₄
N,N-Diisopropyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzamide	N,N-Diisopropyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzamide	分子量：331.3 密度：N/A 沸点：N/A 熔点：N/A	1527480-11-0	C₁₉H₃₀BNO₃
(1R,2R)-2-(cyclobutylmethoxy)cyclobutan-1-ol	(1R,2R)-2-(cyclobutylmethoxy)cyclobutan-1-ol	分子量：156.22 密度：N/A 沸点：N/A 熔点：N/A	2165855-86-5	C₉H₁₆O₂
(1-((1-Methylpiperidin-3-yl)methyl)azetidin-3-yl)methanol	(1-((1-Methylpiperidin-3-yl)methyl)azetidin-3-yl)methanol	分子量：198.31 密度：N/A 沸点：N/A 熔点：N/A	1824061-88-2	C₁₁H₂₂N₂O
5-Oxaspiro[2.5]octan-1-ylmethanethiol	5-Oxaspiro[2.5]octan-1-ylmethanethiol	分子量：158.26 密度：N/A 沸点：N/A 熔点：N/A	1823252-63-6	C₈H₁₄OS
ethyl N-[(2-methyl-5-nitrophenyl)carbamothioyl]carbamate	ethyl N-[(2-methyl-5-nitrophenyl)carbamothioyl]carbamate	分子量：283.31 密度：N/A 沸点：N/A 熔点：N/A	52077-74-4	C₁₁H₁₃N₃O₄S
ethyl N-{[2-(methylsulfanyl)phenyl]carbamothioyl}carbamate	ethyl N-{[2-(methylsulfanyl)phenyl]carbamothioyl}carbamate	分子量：270.4 密度：N/A 沸点：N/A 熔点：N/A	2437616-24-3	C₁₁H₁₄N₂O₂S₂
tert-Butyl ((2R,3R)-4'-fluoro-2-(hydroxymethyl)-2,3,4,5-tetrahydro-[1,1'-biphenyl]-3-yl)carbamate	tert-Butyl ((2R,3R)-4'-fluoro-2-(hydroxymethyl)-2,3,4,5-tetrahydro-[1,1'-biphenyl]-3-yl)carbamate	分子量：321.4 密度：N/A 沸点：N/A 熔点：N/A	2148929-24-0	C₁₈H₂₄FNO₃
3,3'-((1-(4-Chlorophenyl)-1h-1,2,3-triazol-4-yl)methylene)bis(4-hydroxy-2h-chromen-2-one)	3,3'-((1-(4-Chlorophenyl)-1h-1,2,3-triazol-4-yl)methylene)bis(4-hydroxy-2h-chromen-2-one)	分子量：513.9 密度：N/A 沸点：N/A 熔点：N/A	2239318-44-4	C₂₇H₁₆ClN₃O₆
3,3'-((1-(4-Nitrophenyl)-1h-1,2,3-triazol-4-yl)methylene)bis(4-hydroxy-2h-chromen-2-one)	3,3'-((1-(4-Nitrophenyl)-1h-1,2,3-triazol-4-yl)methylene)bis(4-hydroxy-2h-chromen-2-one)	分子量：524.4 密度：N/A 沸点：N/A 熔点：N/A	2239318-48-8	C₂₇H₁₆N₄O₈
1-Oxa-7-thia-4-azaspiro[4.5]decane 7,7-dioxide	1-Oxa-7-thia-4-azaspiro[4.5]decane 7,7-dioxide	分子量：191.25 密度：N/A 沸点：N/A 熔点：N/A	2171909-39-8	C₇H₁₃NO₃S
I(3)-Carboxymethylhexyl hydroxychroman	I(3)-Carboxymethylhexyl hydroxychroman	分子量：334.4 密度：N/A 沸点：N/A 熔点：N/A	1221262-13-0	C₂₀H₃₀O₄