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
7-(2-hydroxyphenyl)-4-methyl-2-(4-phenylpiperazin-1-yl)-7,8-dihydroquinazolin-5(6H)-one	7-(2-hydroxyphenyl)-4-methyl-2-(4-phenylpiperazin-1-yl)-7,8-dihydroquinazolin-5(6H)-one	分子量：414.5 密度：N/A 沸点：N/A 熔点：N/A	920486-25-5	C₂₅H₂₆N₄O₂
Methyl 3-amino-6-(trifluoromethyl)pyridine-2-acetate	Methyl 3-amino-6-(trifluoromethyl)pyridine-2-acetate	分子量：234.17 密度：N/A 沸点：N/A 熔点：N/A	1805505-03-6	C₉H₉F₃N₂O₂
2-[4-(1,3-benzodioxol-5-ylmethyl)-1-piperazinyl]-4,7,7-trimethyl-7,8-dihydro-5(6H)-quinazolinone	2-[4-(1,3-benzodioxol-5-ylmethyl)-1-piperazinyl]-4,7,7-trimethyl-7,8-dihydro-5(6H)-quinazolinone	分子量：408.5 密度：N/A 沸点：N/A 熔点：N/A	920424-98-2	C₂₃H₂₈N₄O₃
Sofosbuvir impurity D	Sofosbuvir impurity D	分子量：529.5 密度：N/A 沸点：N/A 熔点：N/A	2743427-31-6	C₂₂H₂₉FN₃O₉P
7-methyl-2-(4-methylpiperazin-1-yl)-7,8-dihydroquinazolin-5(6H)-one	7-methyl-2-(4-methylpiperazin-1-yl)-7,8-dihydroquinazolin-5(6H)-one	分子量：260.33 密度：N/A 沸点：N/A 熔点：N/A	925194-07-6	C₁₄H₂₀N₄O
2-Chloropyridine-4-sulfonyl fluoride	2-Chloropyridine-4-sulfonyl fluoride	分子量：195.60 密度：N/A 沸点：N/A 熔点：N/A	1909348-26-0	C₅H₃ClFNO₂S
2-[4-(2-methoxyphenyl)piperazin-1-yl]-4,7-dimethyl-7,8-dihydroquinazolin-5(6H)-one	2-[4-(2-methoxyphenyl)piperazin-1-yl]-4,7-dimethyl-7,8-dihydroquinazolin-5(6H)-one	分子量：366.5 密度：N/A 沸点：N/A 熔点：N/A	919745-60-1	C₂₁H₂₆N₄O₂
2-amino-3-hydroxy-3-(1-methyl-1H-pyrazol-3-yl)propanoic acid	2-amino-3-hydroxy-3-(1-methyl-1H-pyrazol-3-yl)propanoic acid	分子量：185.18 密度：N/A 沸点：N/A 熔点：N/A	1850022-29-5	C₇H₁₁N₃O₃
7-(2-furyl)-2-[4-(2-methoxyphenyl)piperazin-1-yl]-4-methyl-7,8-dihydroquinazolin-5(6H)-one	7-(2-furyl)-2-[4-(2-methoxyphenyl)piperazin-1-yl]-4-methyl-7,8-dihydroquinazolin-5(6H)-one	分子量：418.5 密度：N/A 沸点：N/A 熔点：N/A	921077-21-6	C₂₄H₂₆N₄O₃
1-(1,4-dimethyl-1H-pyrazol-5-yl)prop-2-en-1-ol	1-(1,4-dimethyl-1H-pyrazol-5-yl)prop-2-en-1-ol	分子量：152.19 密度：N/A 沸点：N/A 熔点：N/A	1851914-31-2	C₈H₁₂N₂O
2-ethoxy-N-(2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)acetamide	2-ethoxy-N-(2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)acetamide	分子量：261.28 密度：N/A 沸点：N/A 熔点：N/A	920421-84-7	C₁₃H₁₅N₃O₃
(R)-4-(Thietan-3-ylamino)butan-2-ol	(R)-4-(Thietan-3-ylamino)butan-2-ol	分子量：161.27 密度：N/A 沸点：N/A 熔点：N/A	1842518-78-8	C₇H₁₅NOS
N-(2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)-2-oxo-2H-chromene-3-carboxamide	N-(2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)-2-oxo-2H-chromene-3-carboxamide	分子量：347.3 密度：N/A 沸点：N/A 熔点：N/A	942001-04-9	C₁₉H₁₃N₃O₄
1-isobutyloctahydropyrido[4,3-e][1,4]oxazepin-2(3H)-one	1-isobutyloctahydropyrido[4,3-e][1,4]oxazepin-2(3H)-one	分子量：226.32 密度：N/A 沸点：N/A 熔点：N/A	2098009-08-4	C₁₂H₂₂N₂O₂
2-[4-(4-methoxyphenyl)piperazin-1-yl]-7-[(E)-2-phenylvinyl]-7,8-dihydroquinazolin-5(6H)-one	2-[4-(4-methoxyphenyl)piperazin-1-yl]-7-[(E)-2-phenylvinyl]-7,8-dihydroquinazolin-5(6H)-one	分子量：440.5 密度：N/A 沸点：N/A 熔点：N/A	929822-05-9	C₂₇H₂₈N₄O₂
Tert-butyl 4-cyano-3-ethylpiperidine-1-carboxylate	Tert-butyl 4-cyano-3-ethylpiperidine-1-carboxylate	分子量：238.33 密度：N/A 沸点：N/A 熔点：N/A	2097976-05-9	C₁₃H₂₂N₂O₂
N-(7-chloro-2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)pivalamide	N-(7-chloro-2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)pivalamide	分子量：293.75 密度：N/A 沸点：N/A 熔点：N/A	941923-22-4	C₁₄H₁₆ClN₃O₂
2-(3-azidoazetidin-1-yl)-N-ethylacetamide	2-(3-azidoazetidin-1-yl)-N-ethylacetamide	分子量：183.21 密度：N/A 沸点：N/A 熔点：N/A	2097976-65-1	C₇H₁₃N₅O
2-[4-(4-methoxyphenyl)piperazin-1-yl]-4-methyl-7-(2-thienyl)-7,8-dihydroquinazolin-5(6H)-one	2-[4-(4-methoxyphenyl)piperazin-1-yl]-4-methyl-7-(2-thienyl)-7,8-dihydroquinazolin-5(6H)-one	分子量：434.6 密度：N/A 沸点：N/A 熔点：N/A	921127-28-8	C₂₄H₂₆N₄O₂S
3-Azido-1-(3,4-dichlorobenzyl)azetidine	3-Azido-1-(3,4-dichlorobenzyl)azetidine	分子量：257.12 密度：N/A 沸点：N/A 熔点：N/A	2098098-30-5	C₁₀H₁₀Cl₂N₄
2-{4-[3-(trifluoromethyl)phenyl]piperazin-1-yl}-7,8-dihydroquinazolin-5(6H)-one	2-{4-[3-(trifluoromethyl)phenyl]piperazin-1-yl}-7,8-dihydroquinazolin-5(6H)-one	分子量：376.4 密度：N/A 沸点：N/A 熔点：N/A	925600-20-0	C₁₉H₁₉F₃N₄O
N-ethyl-4,5-difluoro-2-iodoaniline	N-ethyl-4,5-difluoro-2-iodoaniline	分子量：283.06 密度：N/A 沸点：N/A 熔点：N/A	1857961-86-4	C₈H₈F₂IN
2-[4-(2-furoyl)piperazin-1-yl]-4,7,7-trimethyl-7,8-dihydroquinazolin-5(6H)-one	2-[4-(2-furoyl)piperazin-1-yl]-4,7,7-trimethyl-7,8-dihydroquinazolin-5(6H)-one	分子量：368.4 密度：N/A 沸点：N/A 熔点：N/A	925600-23-3	C₂₀H₂₄N₄O₃
3-Azido-1-(3-bromobenzyl)azetidine	3-Azido-1-(3-bromobenzyl)azetidine	分子量：267.13 密度：N/A 沸点：N/A 熔点：N/A	2089529-75-7	C₁₀H₁₁BrN₄
N-(7-chloro-2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)-3,4,5-trimethoxybenzamide	N-(7-chloro-2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)-3,4,5-trimethoxybenzamide	分子量：403.8 密度：N/A 沸点：N/A 熔点：N/A	941965-32-8	C₁₉H₁₈ClN₃O₅
2-(3-Aminoazetidin-1-yl)-1-(4-chlorophenyl)ethan-1-one	2-(3-Aminoazetidin-1-yl)-1-(4-chlorophenyl)ethan-1-one	分子量：224.68 密度：N/A 沸点：N/A 熔点：N/A	2098011-24-4	C₁₁H₁₃ClN₂O
N-(7-chloro-2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)-2-(4-methoxyphenyl)acetamide	N-(7-chloro-2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)-2-(4-methoxyphenyl)acetamide	分子量：357.8 密度：N/A 沸点：N/A 熔点：N/A	950473-51-5	C₁₈H₁₆ClN₃O₃
2,3A-dimethyl-octahydropyrrolo[3,4-c]pyrrole	2,3A-dimethyl-octahydropyrrolo[3,4-c]pyrrole	分子量：140.23 密度：N/A 沸点：N/A 熔点：N/A	2059934-91-5	C₈H₁₆N₂
N-(7-chloro-2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)-2-nitrobenzamide	N-(7-chloro-2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)-2-nitrobenzamide	分子量：358.73 密度：N/A 沸点：N/A 熔点：N/A	942001-07-2	C₁₆H₁₁ClN₄O₄
1-(3,3,3-Trifluoro-2-oxopropyl)piperidine-3-carboxylic acid	1-(3,3,3-Trifluoro-2-oxopropyl)piperidine-3-carboxylic acid	分子量：239.19 密度：N/A 沸点：N/A 熔点：N/A	2098011-51-7	C₉H₁₂F₃NO₃
7-(3-chlorophenyl)-2-[4-(2-furoyl)piperazin-1-yl]-4-methyl-7,8-dihydroquinazolin-5(6H)-one	7-(3-chlorophenyl)-2-[4-(2-furoyl)piperazin-1-yl]-4-methyl-7,8-dihydroquinazolin-5(6H)-one	分子量：450.9 密度：N/A 沸点：N/A 熔点：N/A	920438-95-5	C₂₄H₂₃ClN₄O₃
tert-Butyl 3-(3-bromo-5-(trifluoromethyl)pyridin-2-yl)azetidine-1-carboxylate	tert-Butyl 3-(3-bromo-5-(trifluoromethyl)pyridin-2-yl)azetidine-1-carboxylate	分子量：381.19 密度：N/A 沸点：N/A 熔点：N/A	1922143-49-4	C₁₄H₁₆BrF₃N₂O₂
N-(7-chloro-2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)thiophene-2-carboxamide	N-(7-chloro-2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)thiophene-2-carboxamide	分子量：319.8 密度：N/A 沸点：N/A 熔点：N/A	920422-63-5	C₁₄H₁₀ClN₃O₂S
6-((2,6-Dichlorobenzyl)oxy)-1,2,3,4-tetrahydro-2,7-naphthyridine	6-((2,6-Dichlorobenzyl)oxy)-1,2,3,4-tetrahydro-2,7-naphthyridine	分子量：309.2 密度：N/A 沸点：N/A 熔点：N/A	2087478-95-1	C₁₅H₁₄Cl₂N₂O
N-(7-chloro-2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)-3,3-diphenylpropanamide	N-(7-chloro-2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)-3,3-diphenylpropanamide	分子量：417.9 密度：N/A 沸点：N/A 熔点：N/A	941965-36-2	C₂₄H₂₀ClN₃O₂
3-Azido-1-(3-methylcyclohexyl)azetidine	3-Azido-1-(3-methylcyclohexyl)azetidine	分子量：194.28 密度：N/A 沸点：N/A 熔点：N/A	2098100-73-1	C₁₀H₁₈N₄
N-(7-chloro-2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)-2,2-diphenylacetamide	N-(7-chloro-2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)-2,2-diphenylacetamide	分子量：403.9 密度：N/A 沸点：N/A 熔点：N/A	941923-25-7	C₂₃H₁₈ClN₃O₂
6-Bromo-2-methylpyrido[2,3-d]pyrimidin-4-amine	6-Bromo-2-methylpyrido[2,3-d]pyrimidin-4-amine	分子量：239.07 密度：N/A 沸点：N/A 熔点：N/A	1121609-45-7	C₈H₇BrN₄
N-(7-chloro-2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)-3-methyl-4-nitrobenzamide	N-(7-chloro-2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)-3-methyl-4-nitrobenzamide	分子量：372.8 密度：N/A 沸点：N/A 熔点：N/A	942001-14-1	C₁₇H₁₃ClN₄O₄
3-amino-4,4-dimethyldihydrothiophen-2(3H)-one hydrochloride	3-amino-4,4-dimethyldihydrothiophen-2(3H)-one hydrochloride	分子量：181.68 密度：N/A 沸点：N/A 熔点：N/A	89531-05-5	C₆H₁₂ClNOS
4-butyl-N-(7-chloro-2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)cyclohexanecarboxamide	4-butyl-N-(7-chloro-2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)cyclohexanecarboxamide	分子量：375.9 密度：N/A 沸点：N/A 熔点：N/A	941923-26-8	C₂₀H₂₆ClN₃O₂
Tert-butyl 4-((6-amino-5-chloropyrimidin-4-yl)amino)piperidine-1-carboxylate	Tert-butyl 4-((6-amino-5-chloropyrimidin-4-yl)amino)piperidine-1-carboxylate	分子量：327.81 密度：N/A 沸点：N/A 熔点：N/A	2369984-07-4	C₁₄H₂₂ClN₅O₂
4,7-dimethyl-2-{[3-(morpholin-4-yl)propyl]amino}-7,8-dihydroquinazolin-5(6H)-one	4,7-dimethyl-2-{[3-(morpholin-4-yl)propyl]amino}-7,8-dihydroquinazolin-5(6H)-one	分子量：318.4 密度：N/A 沸点：N/A 熔点：N/A	925600-62-0	C₁₇H₂₆N₄O₂
3-Bromo-2-chloro-N-methyl-6-nitroaniline	3-Bromo-2-chloro-N-methyl-6-nitroaniline	分子量：265.49 密度：N/A 沸点：N/A 熔点：N/A	2054343-83-6	C₇H₆BrClN₂O₂
7-methyl-2-{[2-(morpholin-4-yl)ethyl]amino}-7,8-dihydroquinazolin-5(6H)-one	7-methyl-2-{[2-(morpholin-4-yl)ethyl]amino}-7,8-dihydroquinazolin-5(6H)-one	分子量：290.36 密度：N/A 沸点：N/A 熔点：N/A	925194-56-5	C₁₅H₂₂N₄O₂
4-(3,3-Dimethylbut-1-yn-1-yl)isoquinoline	4-(3,3-Dimethylbut-1-yn-1-yl)isoquinoline	分子量：209.29 密度：N/A 沸点：N/A 熔点：N/A	2098118-10-4	C₁₅H₁₅N
7-(2-methylphenyl)-2-[(3-morpholin-4-ylpropyl)amino]-7,8-dihydroquinazolin-5(6H)-one	7-(2-methylphenyl)-2-[(3-morpholin-4-ylpropyl)amino]-7,8-dihydroquinazolin-5(6H)-one	分子量：380.5 密度：N/A 沸点：N/A 熔点：N/A	925141-92-0	C₂₂H₂₈N₄O₂
(2S)-2-methyl-1-[(2-methyl-1,3-oxazol-4-yl)methyl]piperazine	(2S)-2-methyl-1-[(2-methyl-1,3-oxazol-4-yl)methyl]piperazine	分子量：195.26 密度：N/A 沸点：N/A 熔点：N/A	1867680-29-2	C₁₀H₁₇N₃O
4-methyl-7-(2-methylphenyl)-2-[(2-morpholin-4-ylethyl)amino]-7,8-dihydroquinazolin-5(6H)-one	4-methyl-7-(2-methylphenyl)-2-[(2-morpholin-4-ylethyl)amino]-7,8-dihydroquinazolin-5(6H)-one	分子量：380.5 密度：N/A 沸点：N/A 熔点：N/A	925194-59-8	C₂₂H₂₈N₄O₂
6-(3,3-Dimethylbut-1-yn-1-yl)pyridin-3-amine	6-(3,3-Dimethylbut-1-yn-1-yl)pyridin-3-amine	分子量：174.24 密度：N/A 沸点：N/A 熔点：N/A	2098121-62-9	C₁₁H₁₄N₂