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-(Cyclopropylmethyl)-4-(2-phenylethyl)piperazine-2,3-dione	1-(Cyclopropylmethyl)-4-(2-phenylethyl)piperazine-2,3-dione	分子量：272.34 密度：N/A 沸点：N/A 熔点：N/A	2379988-61-9	C₁₆H₂₀N₂O₂
1,3-Dimethyl-6-[4-(2-morpholin-4-ylpyrimidin-4-yl)piperazin-1-yl]-1,3-diazinane-2,4-dione	1,3-Dimethyl-6-[4-(2-morpholin-4-ylpyrimidin-4-yl)piperazin-1-yl]-1,3-diazinane-2,4-dione	分子量：389.5 密度：N/A 沸点：N/A 熔点：N/A	2640873-12-5	C₁₈H₂₇N₇O₃
6-Cyclopropyl-2-[4-(5-fluoro-6-propan-2-ylpyrimidin-4-yl)piperazin-1-yl]-1,3-diazinan-4-one	6-Cyclopropyl-2-[4-(5-fluoro-6-propan-2-ylpyrimidin-4-yl)piperazin-1-yl]-1,3-diazinan-4-one	分子量：362.4 密度：N/A 沸点：N/A 熔点：N/A	2640963-96-6	C₁₈H₂₇FN₆O
2-[2-(5-bromopyrimidin-2-yl)-1,3,3a,4,6,6a-hexahydropyrrolo[3,4-c]pyrrol-5-yl]-5-fluoro-6-methyl-5H-pyrimidin-4-one	2-[2-(5-bromopyrimidin-2-yl)-1,3,3a,4,6,6a-hexahydropyrrolo[3,4-c]pyrrol-5-yl]-5-fluoro-6-methyl-5H-pyrimidin-4-one	分子量：395.23 密度：N/A 沸点：N/A 熔点：N/A	2640874-83-3	C₁₅H₁₆BrFN₆O
3-(3,5-dimethyl-1H-pyrazol-4-yl)-N-[1-(4-methyl-6-oxo-1,3-diazinan-2-yl)piperidin-4-yl]propanamide	3-(3,5-dimethyl-1H-pyrazol-4-yl)-N-[1-(4-methyl-6-oxo-1,3-diazinan-2-yl)piperidin-4-yl]propanamide	分子量：362.5 密度：N/A 沸点：N/A 熔点：N/A	1902907-45-2	C₁₈H₃₀N₆O₂
2-[4-(6-Cyclopropylpyrimidin-4-yl)piperazin-1-yl]-6-(difluoromethyl)-1,3-diazinan-4-one	2-[4-(6-Cyclopropylpyrimidin-4-yl)piperazin-1-yl]-6-(difluoromethyl)-1,3-diazinan-4-one	分子量：352.38 密度：N/A 沸点：N/A 熔点：N/A	2640889-85-4	C₁₆H₂₂F₂N₆O
2-oxo-N-[2-(4-oxothieno[2,3-d]pyrimidin-3-yl)ethyl]-3,4,4a,5,6,7,8,8a-octahydro-1H-1,8-naphthyridine-3-carboxamide	2-oxo-N-[2-(4-oxothieno[2,3-d]pyrimidin-3-yl)ethyl]-3,4,4a,5,6,7,8,8a-octahydro-1H-1,8-naphthyridine-3-carboxamide	分子量：375.4 密度：N/A 沸点：N/A 熔点：N/A	1904028-14-3	C₁₇H₂₁N₅O₃S
1-(3-Methylbut-2-enyl)-4-(3-methylphenyl)piperazine-2,3-dione	1-(3-Methylbut-2-enyl)-4-(3-methylphenyl)piperazine-2,3-dione	分子量：272.34 密度：N/A 沸点：N/A 熔点：N/A	2380042-39-5	C₁₆H₂₀N₂O₂
N-[2-(2,4-dioxo-4aH-pyrido[2,3-d]pyrimidin-3-yl)ethyl]-2-methylbenzamide	N-[2-(2,4-dioxo-4aH-pyrido[2,3-d]pyrimidin-3-yl)ethyl]-2-methylbenzamide	分子量：324.33 密度：N/A 沸点：N/A 熔点：N/A	2034320-97-1	C₁₇H₁₆N₄O₃
2-[2-(6-ethyl-5-fluoropyrimidin-4-yl)-1,3,3a,4,6,6a-hexahydropyrrolo[3,4-c]pyrrol-5-yl]-5-fluoro-6-methyl-5H-pyrimidin-4-one	2-[2-(6-ethyl-5-fluoropyrimidin-4-yl)-1,3,3a,4,6,6a-hexahydropyrrolo[3,4-c]pyrrol-5-yl]-5-fluoro-6-methyl-5H-pyrimidin-4-one	分子量：362.4 密度：N/A 沸点：N/A 熔点：N/A	2640969-58-8	C₁₇H₂₀F₂N₆O
6-[4-[2-(2-Fluorophenoxy)acetyl]piperazin-1-yl]-3-methyl-1,3-diazinane-2,4-dione	6-[4-[2-(2-Fluorophenoxy)acetyl]piperazin-1-yl]-3-methyl-1,3-diazinane-2,4-dione	分子量：364.4 密度：N/A 沸点：N/A 熔点：N/A	2319721-11-2	C₁₇H₂₁FN₄O₄
6-[4-[2-(2-Chloro-6-fluorophenyl)acetyl]piperazin-1-yl]-3-methyl-1,3-diazinane-2,4-dione	6-[4-[2-(2-Chloro-6-fluorophenyl)acetyl]piperazin-1-yl]-3-methyl-1,3-diazinane-2,4-dione	分子量：382.8 密度：N/A 沸点：N/A 熔点：N/A	2309312-88-5	C₁₇H₂₀ClFN₄O₃
6-(Difluoromethyl)-2-[4-[(3-methyl-1,2-oxazol-5-yl)methyl]piperazin-1-yl]-1,3-diazinan-4-one	6-(Difluoromethyl)-2-[4-[(3-methyl-1,2-oxazol-5-yl)methyl]piperazin-1-yl]-1,3-diazinan-4-one	分子量：329.35 密度：N/A 沸点：N/A 熔点：N/A	2640893-14-5	C₁₄H₂₁F₂N₅O₂
5-fluoro-6-methyl-2-[5-(4-methylthiophene-2-carbonyl)-1,3,3a,4,6,6a-hexahydropyrrolo[3,4-c]pyrrol-2-yl]-5H-pyrimidin-4-one	5-fluoro-6-methyl-2-[5-(4-methylthiophene-2-carbonyl)-1,3,3a,4,6,6a-hexahydropyrrolo[3,4-c]pyrrol-2-yl]-5H-pyrimidin-4-one	分子量：362.4 密度：N/A 沸点：N/A 熔点：N/A	2640950-89-4	C₁₇H₁₉FN₄O₂S
5-Fluoro-3-methyl-1-(2-methylprop-2-enyl)-4a,5,6,7,8,8a-hexahydroquinazoline-2,4-dione	5-Fluoro-3-methyl-1-(2-methylprop-2-enyl)-4a,5,6,7,8,8a-hexahydroquinazoline-2,4-dione	分子量：254.30 密度：N/A 沸点：N/A 熔点：N/A	2319850-65-0	C₁₃H₁₉FN₂O₂
N-(1,3-dimethyl-2,6-dioxo-1,3-diazinan-4-yl)-1-[6-(1,2,4-triazol-1-yl)pyrimidin-4-yl]azetidine-3-carboxamide	N-(1,3-dimethyl-2,6-dioxo-1,3-diazinan-4-yl)-1-[6-(1,2,4-triazol-1-yl)pyrimidin-4-yl]azetidine-3-carboxamide	分子量：385.38 密度：N/A 沸点：N/A 熔点：N/A	2034230-89-0	C₁₆H₁₉N₉O₃
5-Fluoro-6-methyl-2-[4-[2-[3-(trifluoromethyl)phenyl]acetyl]piperazin-1-yl]-1,3-diazinan-4-one	5-Fluoro-6-methyl-2-[4-[2-[3-(trifluoromethyl)phenyl]acetyl]piperazin-1-yl]-1,3-diazinan-4-one	分子量：402.4 密度：N/A 沸点：N/A 熔点：N/A	2549007-28-3	C₁₈H₂₂F₄N₄O₂
2-[4-[(2-Methoxyphenyl)methyl]-2,3-dioxopiperazin-1-yl]acetamide	2-[4-[(2-Methoxyphenyl)methyl]-2,3-dioxopiperazin-1-yl]acetamide	分子量：291.30 密度：N/A 沸点：N/A 熔点：N/A	902862-34-4	C₁₄H₁₇N₃O₄
3-Methyl-6-[4-(2-phenylmethoxyacetyl)piperazin-1-yl]-1,3-diazinane-2,4-dione	3-Methyl-6-[4-(2-phenylmethoxyacetyl)piperazin-1-yl]-1,3-diazinane-2,4-dione	分子量：360.4 密度：N/A 沸点：N/A 熔点：N/A	2309568-97-4	C₁₈H₂₄N₄O₄
1-(2-Fluorophenyl)-4-(2-methylprop-2-enyl)piperazine-2,3-dione	1-(2-Fluorophenyl)-4-(2-methylprop-2-enyl)piperazine-2,3-dione	分子量：262.28 密度：N/A 沸点：N/A 熔点：N/A	2380098-43-9	C₁₄H₁₅FN₂O₂
N-[2-(4-cyclopropyl-6-oxopyrimidin-1-yl)ethyl]-3-(3,5-dimethylpyrazolidin-4-yl)propanamide	N-[2-(4-cyclopropyl-6-oxopyrimidin-1-yl)ethyl]-3-(3,5-dimethylpyrazolidin-4-yl)propanamide	分子量：333.4 密度：N/A 沸点：N/A 熔点：N/A	2034207-61-7	C₁₇H₂₇N₅O₂
6-(Difluoromethyl)-2-[4-(5-fluoropyrimidin-2-yl)piperazin-1-yl]-1,3-diazinan-4-one	6-(Difluoromethyl)-2-[4-(5-fluoropyrimidin-2-yl)piperazin-1-yl]-1,3-diazinan-4-one	分子量：330.31 密度：N/A 沸点：N/A 熔点：N/A	2640975-25-1	C₁₃H₁₇F₃N₆O
3-[1-(4-propylthiadiazole-5-carbonyl)piperidin-4-yl]-4aH-pyrido[2,3-d]pyrimidine-2,4-dione	3-[1-(4-propylthiadiazole-5-carbonyl)piperidin-4-yl]-4aH-pyrido[2,3-d]pyrimidine-2,4-dione	分子量：400.5 密度：N/A 沸点：N/A 熔点：N/A	2034465-77-3	C₁₈H₂₀N₆O₃S
6-(Difluoromethyl)-2-[4-(4,6-dimethylpyrimidin-2-yl)piperazin-1-yl]-1,3-diazinan-4-one	6-(Difluoromethyl)-2-[4-(4,6-dimethylpyrimidin-2-yl)piperazin-1-yl]-1,3-diazinan-4-one	分子量：340.37 密度：N/A 沸点：N/A 熔点：N/A	2640846-31-5	C₁₅H₂₂F₂N₆O
6-Cyclopropyl-2-[4-[(3-methyl-1,2-oxazol-5-yl)methyl]piperazin-1-yl]-1,3-diazinan-4-one	6-Cyclopropyl-2-[4-[(3-methyl-1,2-oxazol-5-yl)methyl]piperazin-1-yl]-1,3-diazinan-4-one	分子量：319.40 密度：N/A 沸点：N/A 熔点：N/A	2640898-49-1	C₁₆H₂₅N₅O₂
5-fluoro-6-propan-2-yl-2-[4-(1H-pyrazole-5-carbonyl)piperazin-1-yl]-5H-pyrimidin-4-one	5-fluoro-6-propan-2-yl-2-[4-(1H-pyrazole-5-carbonyl)piperazin-1-yl]-5H-pyrimidin-4-one	分子量：334.35 密度：N/A 沸点：N/A 熔点：N/A	2549013-10-5	C₁₅H₁₉FN₆O₂
N-[1-(4-methyl-6-oxo-1,3-diazinan-2-yl)piperidin-4-yl]-2-oxo-3H-1,8-naphthyridine-3-carboxamide	N-[1-(4-methyl-6-oxo-1,3-diazinan-2-yl)piperidin-4-yl]-2-oxo-3H-1,8-naphthyridine-3-carboxamide	分子量：384.4 密度：N/A 沸点：N/A 熔点：N/A	1903168-94-4	C₁₉H₂₄N₆O₃
6-(Difluoromethyl)-2-(4-pyrimidin-2-ylpiperazin-1-yl)-1,3-diazinan-4-one	6-(Difluoromethyl)-2-(4-pyrimidin-2-ylpiperazin-1-yl)-1,3-diazinan-4-one	分子量：312.32 密度：N/A 沸点：N/A 熔点：N/A	2640904-13-6	C₁₃H₁₈F₂N₆O
6-(4-Tert-butylbenzoyl)-2-oxo-1,3,4,4a,5,7,8,8a-octahydro-1,6-naphthyridine-3-carbonitrile	6-(4-Tert-butylbenzoyl)-2-oxo-1,3,4,4a,5,7,8,8a-octahydro-1,6-naphthyridine-3-carbonitrile	分子量：339.4 密度：N/A 沸点：N/A 熔点：N/A	2034306-97-1	C₂₀H₂₅N₃O₂
N-[2-(2,4-dioxo-4aH-thieno[3,2-d]pyrimidin-3-yl)ethyl]-1-thiophen-2-ylcyclopentane-1-carboxamide	N-[2-(2,4-dioxo-4aH-thieno[3,2-d]pyrimidin-3-yl)ethyl]-1-thiophen-2-ylcyclopentane-1-carboxamide	分子量：389.5 密度：N/A 沸点：N/A 熔点：N/A	2034354-20-4	C₁₈H₁₉N₃O₃S₂
2-(2-methoxypropyl)-2H-1,2,3-triazol-4-amine	2-(2-methoxypropyl)-2H-1,2,3-triazol-4-amine	分子量：156.19 密度：N/A 沸点：N/A 熔点：N/A	2138271-25-5	C₆H₁₂N₄O
6-Cyclopropyl-2-[4-[(2,4-dimethyl-1,3-thiazol-5-yl)methyl]piperazin-1-yl]-1,3-diazinan-4-one	6-Cyclopropyl-2-[4-[(2,4-dimethyl-1,3-thiazol-5-yl)methyl]piperazin-1-yl]-1,3-diazinan-4-one	分子量：349.5 密度：N/A 沸点：N/A 熔点：N/A	2640898-42-4	C₁₇H₂₇N₅OS
5-[4-[(6-Cyclopropylpyrimidin-4-yl)oxymethyl]piperidine-1-carbonyl]-3-methyl-1,3-diazinane-2,4-dione	5-[4-[(6-Cyclopropylpyrimidin-4-yl)oxymethyl]piperidine-1-carbonyl]-3-methyl-1,3-diazinane-2,4-dione	分子量：387.4 密度：N/A 沸点：N/A 熔点：N/A	2319808-51-8	C₁₉H₂₅N₅O₄
6-Phenyl-5-[4-(4,4,4-trifluorobutanoyl)piperazin-1-yl]diazinan-3-one	6-Phenyl-5-[4-(4,4,4-trifluorobutanoyl)piperazin-1-yl]diazinan-3-one	分子量：384.4 密度：N/A 沸点：N/A 熔点：N/A	2549040-31-3	C₁₈H₂₃F₃N₄O₂
N-[1-(4-methyl-6-oxo-1,3-diazinan-2-yl)piperidin-4-yl]-4-pyrrol-1-ylbenzamide	N-[1-(4-methyl-6-oxo-1,3-diazinan-2-yl)piperidin-4-yl]-4-pyrrol-1-ylbenzamide	分子量：381.5 密度：N/A 沸点：N/A 熔点：N/A	1903154-37-9	C₂₁H₂₇N₅O₂
3-methoxy-1-methyl-N-[[3-(2-oxo-3H-pyridin-3-yl)-1,2,4-oxadiazol-5-yl]methyl]pyrazole-4-carboxamide	3-methoxy-1-methyl-N-[[3-(2-oxo-3H-pyridin-3-yl)-1,2,4-oxadiazol-5-yl]methyl]pyrazole-4-carboxamide	分子量：330.30 密度：N/A 沸点：N/A 熔点：N/A	1903048-00-9	C₁₄H₁₄N₆O₄
5-Fluoro-6-propan-2-yl-2-(4-pyrimidin-4-ylpiperazin-1-yl)-1,3-diazinan-4-one	5-Fluoro-6-propan-2-yl-2-(4-pyrimidin-4-ylpiperazin-1-yl)-1,3-diazinan-4-one	分子量：322.38 密度：N/A 沸点：N/A 熔点：N/A	2549000-09-9	C₁₅H₂₃FN₆O
2-Oxo-6-[2-(4-propan-2-ylsulfanylphenyl)acetyl]-1,3,4,4a,5,7,8,8a-octahydro-1,6-naphthyridine-3-carbonitrile	2-Oxo-6-[2-(4-propan-2-ylsulfanylphenyl)acetyl]-1,3,4,4a,5,7,8,8a-octahydro-1,6-naphthyridine-3-carbonitrile	分子量：371.5 密度：N/A 沸点：N/A 熔点：N/A	2034425-72-2	C₂₀H₂₅N₃O₂S
5-bromo-N-[2-(2,4-dioxo-4aH-pyrido[2,3-d]pyrimidin-3-yl)ethyl]furan-2-carboxamide	5-bromo-N-[2-(2,4-dioxo-4aH-pyrido[2,3-d]pyrimidin-3-yl)ethyl]furan-2-carboxamide	分子量：379.17 密度：N/A 沸点：N/A 熔点：N/A	2034321-27-0	C₁₄H₁₁BrN₄O₄
1-(3,4-Difluorophenyl)-4-(3-methylbut-2-enyl)piperazine-2,3-dione	1-(3,4-Difluorophenyl)-4-(3-methylbut-2-enyl)piperazine-2,3-dione	分子量：294.30 密度：N/A 沸点：N/A 熔点：N/A	2742030-21-1	C₁₅H₁₆F₂N₂O₂
2-[5-(5-Chloropyrimidin-2-yl)-1,3,3a,4,6,6a-hexahydropyrrolo[3,4-c]pyrrol-2-yl]-6-ethyl-5-fluoro-1,3-diazinan-4-one	2-[5-(5-Chloropyrimidin-2-yl)-1,3,3a,4,6,6a-hexahydropyrrolo[3,4-c]pyrrol-2-yl]-6-ethyl-5-fluoro-1,3-diazinan-4-one	分子量：368.8 密度：N/A 沸点：N/A 熔点：N/A	2640974-29-2	C₁₆H₂₂ClFN₆O
6-(Difluoromethyl)-2-(4-pyrimidin-4-ylpiperazin-1-yl)-1,3-diazinan-4-one	6-(Difluoromethyl)-2-(4-pyrimidin-4-ylpiperazin-1-yl)-1,3-diazinan-4-one	分子量：312.32 密度：N/A 沸点：N/A 熔点：N/A	2640949-52-4	C₁₃H₁₈F₂N₆O
6-Cyclopropyl-2-[4-(2-methylpyrimidin-4-yl)piperazin-1-yl]-1,3-diazinan-4-one	6-Cyclopropyl-2-[4-(2-methylpyrimidin-4-yl)piperazin-1-yl]-1,3-diazinan-4-one	分子量：316.40 密度：N/A 沸点：N/A 熔点：N/A	2640963-61-5	C₁₆H₂₄N₆O
5-fluoro-2-[4-(6-oxo-1-propan-2-ylpyridazine-3-carbonyl)piperazin-1-yl]-6-propan-2-yl-5H-pyrimidin-4-one	5-fluoro-2-[4-(6-oxo-1-propan-2-ylpyridazine-3-carbonyl)piperazin-1-yl]-6-propan-2-yl-5H-pyrimidin-4-one	分子量：404.4 密度：N/A 沸点：N/A 熔点：N/A	2549022-69-5	C₁₉H₂₅FN₆O₃
5-[3-(1,2,4-Oxadiazol-3-yl)-4-phenylpyrrolidine-1-carbonyl]piperidin-2-one	5-[3-(1,2,4-Oxadiazol-3-yl)-4-phenylpyrrolidine-1-carbonyl]piperidin-2-one	分子量：340.4 密度：N/A 沸点：N/A 熔点：N/A	2034350-20-2	C₁₈H₂₀N₄O₃
1-[3-Oxo-3-(3-phenylazepan-1-yl)propyl]-1,3-diazinane-2,4-dione	1-[3-Oxo-3-(3-phenylazepan-1-yl)propyl]-1,3-diazinane-2,4-dione	分子量：343.4 密度：N/A 沸点：N/A 熔点：N/A	1705667-97-5	C₁₉H₂₅N₃O₃
2-[4-(5-bromopyridine-3-carbonyl)piperazin-1-yl]-5-fluoro-6-propan-2-yl-5H-pyrimidin-4-one	2-[4-(5-bromopyridine-3-carbonyl)piperazin-1-yl]-5-fluoro-6-propan-2-yl-5H-pyrimidin-4-one	分子量：424.3 密度：N/A 沸点：N/A 熔点：N/A	2549030-41-1	C₁₇H₁₉BrFN₅O₂
6-Cyclopropyl-2-[4-(6-ethyl-5-fluoropyrimidin-4-yl)piperazin-1-yl]-1,3-diazinan-4-one	6-Cyclopropyl-2-[4-(6-ethyl-5-fluoropyrimidin-4-yl)piperazin-1-yl]-1,3-diazinan-4-one	分子量：348.4 密度：N/A 沸点：N/A 熔点：N/A	2640968-70-1	C₁₇H₂₅FN₆O
3-[1-(1H-pyrazole-5-carbonyl)piperidin-4-yl]-4aH-quinazoline-2,4-dione	3-[1-(1H-pyrazole-5-carbonyl)piperidin-4-yl]-4aH-quinazoline-2,4-dione	分子量：339.3 密度：N/A 沸点：N/A 熔点：N/A	2034408-28-9	C₁₇H₁₇N₅O₃
N-[3-(3-methyl-1,2,4-oxadiazol-5-yl)-5,7-dihydro-4H-thieno[2,3-c]pyran-2-yl]-6-oxo-3H-pyridine-3-carboxamide	N-[3-(3-methyl-1,2,4-oxadiazol-5-yl)-5,7-dihydro-4H-thieno[2,3-c]pyran-2-yl]-6-oxo-3H-pyridine-3-carboxamide	分子量：358.4 密度：N/A 沸点：N/A 熔点：N/A	2034484-47-2	C₁₆H₁₄N₄O₄S