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-(1,4-dimethyl-1H-pyrazol-5-yl)-2-(methylamino)ethan-1-one	1-(1,4-dimethyl-1H-pyrazol-5-yl)-2-(methylamino)ethan-1-one	分子量：167.21 密度：N/A 沸点：N/A 熔点：N/A	1504090-93-0	C₈H₁₃N₃O
(1R)-3-amino-1-(5-methylpyrazin-2-yl)propan-1-ol	(1R)-3-amino-1-(5-methylpyrazin-2-yl)propan-1-ol	分子量：167.21 密度：N/A 沸点：N/A 熔点：N/A	2227731-81-7	C₈H₁₃N₃O
(R)-2-Amino-3-(2-methoxy-3-methylphenyl)propanoic acid	(R)-2-Amino-3-(2-methoxy-3-methylphenyl)propanoic acid	分子量：209.24 密度：N/A 沸点：N/A 熔点：N/A	1336471-04-5	C₁₁H₁₅NO₃
(1S)-3-amino-1-(3-methylpyrazin-2-yl)propan-1-ol	(1S)-3-amino-1-(3-methylpyrazin-2-yl)propan-1-ol	分子量：167.21 密度：N/A 沸点：N/A 熔点：N/A	2227906-12-7	C₈H₁₃N₃O
5-prop-2-ynylsulfanyl-1H-pyrimidine-2,4-dione	5-prop-2-ynylsulfanyl-1H-pyrimidine-2,4-dione	分子量：182.20 密度：N/A 沸点：N/A 熔点：N/A	73236-44-9	C₇H₆N₂O₂S
N-(3-methanesulfonylpropyl)-N-methylhydroxylamine	N-(3-methanesulfonylpropyl)-N-methylhydroxylamine	分子量：167.23 密度：N/A 沸点：N/A 熔点：N/A	1502543-40-9	C₅H₁₃NO₃S
1-(5-Methylthiophen-2-yl)cyclobutan-1-amine	1-(5-Methylthiophen-2-yl)cyclobutan-1-amine	分子量：167.27 密度：N/A 沸点：N/A 熔点：N/A	1508588-17-7	C₉H₁₃NS
6-(p-Fluorophenyl)-3-methyluracil	6-(p-Fluorophenyl)-3-methyluracil	分子量：220.20 密度：N/A 沸点：N/A 熔点：N/A	2097974-35-9	C₁₁H₉FN₂O₂
(1S)-2-amino-1-(2-methoxypyridin-3-yl)ethan-1-ol	(1S)-2-amino-1-(2-methoxypyridin-3-yl)ethan-1-ol	分子量：168.19 密度：N/A 沸点：N/A 熔点：N/A	2227858-30-0	C₈H₁₂N₂O₂
3-(Difluoromethyl)-5-((4-methylbenzyl)thio)-4H-1,2,4-triazole	3-(Difluoromethyl)-5-((4-methylbenzyl)thio)-4H-1,2,4-triazole	分子量：255.29 密度：N/A 沸点：N/A 熔点：N/A	1706454-59-2	C₁₁H₁₁F₂N₃S
3-(Difluoromethyl)-5-((4-fluorobenzyl)thio)-4H-1,2,4-triazole	3-(Difluoromethyl)-5-((4-fluorobenzyl)thio)-4H-1,2,4-triazole	分子量：259.25 密度：N/A 沸点：N/A 熔点：N/A	1706453-17-9	C₁₀H₈F₃N₃S
3-(Difluoromethyl)-5-((2-nitro-4-(trifluoromethyl)phenyl)thio)-4H-1,2,4-triazole	3-(Difluoromethyl)-5-((2-nitro-4-(trifluoromethyl)phenyl)thio)-4H-1,2,4-triazole	分子量：340.23 密度：N/A 沸点：N/A 熔点：N/A	1706454-87-6	C₁₀H₅F₅N₄O₂S
2-((5-(Difluoromethyl)-4H-1,2,4-triazol-3-yl)thio)-5-nitrobenzoic acid	2-((5-(Difluoromethyl)-4H-1,2,4-triazol-3-yl)thio)-5-nitrobenzoic acid	分子量：316.24 密度：N/A 沸点：N/A 熔点：N/A	1706458-87-8	C₁₀H₆F₂N₄O₄S
(3r)-3-Amino-3-(4-methylfuran-2-yl)propanoic acid	(3r)-3-Amino-3-(4-methylfuran-2-yl)propanoic acid	分子量：169.18 密度：N/A 沸点：N/A 熔点：N/A	1366295-58-0	C₈H₁₁NO₃
5-((2-Bromo-4-chloro-6-methylphenoxy)methyl)-1,3,4-oxadiazol-2-amine	5-((2-Bromo-4-chloro-6-methylphenoxy)methyl)-1,3,4-oxadiazol-2-amine	分子量：318.55 密度：N/A 沸点：N/A 熔点：N/A	1706439-51-1	C₁₀H₉BrClN₃O₂
2-(4-(tert-Butyl)-2-chlorophenoxy)acetamide	2-(4-(tert-Butyl)-2-chlorophenoxy)acetamide	分子量：241.71 密度：N/A 沸点：N/A 熔点：N/A	1706453-73-7	C₁₂H₁₆ClNO₂
2-(2,4-Dichloro-3,5-dimethylphenoxy)acetamide	2-(2,4-Dichloro-3,5-dimethylphenoxy)acetamide	分子量：248.10 密度：N/A 沸点：N/A 熔点：N/A	1706439-14-6	C₁₀H₁₁Cl₂NO₂
(3S)-3-amino-3-(1,3-dimethyl-1H-pyrazol-4-yl)propan-1-ol	(3S)-3-amino-3-(1,3-dimethyl-1H-pyrazol-4-yl)propan-1-ol	分子量：169.22 密度：N/A 沸点：N/A 熔点：N/A	2137146-46-2	C₈H₁₅N₃O
2-(((3-(2,3-dimethoxyphenyl)-1,2,4-oxadiazol-5-yl)methyl)thio)-3-phenethylquinazolin-4(3H)-one	2-(((3-(2,3-dimethoxyphenyl)-1,2,4-oxadiazol-5-yl)methyl)thio)-3-phenethylquinazolin-4(3H)-one	分子量：500.6 密度：N/A 沸点：N/A 熔点：N/A	2034477-48-8	C₂₇H₂₄N₄O₄S
3-pentyl-2-(((3-(3-(trifluoromethyl)phenyl)-1,2,4-oxadiazol-5-yl)methyl)thio)quinazolin-4(3H)-one	3-pentyl-2-(((3-(3-(trifluoromethyl)phenyl)-1,2,4-oxadiazol-5-yl)methyl)thio)quinazolin-4(3H)-one	分子量：474.5 密度：N/A 沸点：N/A 熔点：N/A	2034461-08-8	C₂₃H₂₁F₃N₄O₂S
1-(5-Thiazolyl)piperazine	1-(5-Thiazolyl)piperazine	分子量：169.25 密度：N/A 沸点：N/A 熔点：N/A	933728-37-1	C₇H₁₁N₃S
2-(5-amino-4-(phenylsulfonyl)-3-(m-tolylamino)-1H-pyrazol-1-yl)-N-(4-ethylphenyl)acetamide	2-(5-amino-4-(phenylsulfonyl)-3-(m-tolylamino)-1H-pyrazol-1-yl)-N-(4-ethylphenyl)acetamide	分子量：489.6 密度：N/A 沸点：N/A 熔点：N/A	2034399-77-2	C₂₆H₂₇N₅O₃S
2-(((3-(4-bromophenyl)-1,2,4-oxadiazol-5-yl)methyl)thio)-3-(3-methoxypropyl)quinazolin-4(3H)-one	2-(((3-(4-bromophenyl)-1,2,4-oxadiazol-5-yl)methyl)thio)-3-(3-methoxypropyl)quinazolin-4(3H)-one	分子量：487.4 密度：N/A 沸点：N/A 熔点：N/A	2034223-59-9	C₂₁H₁₉BrN₄O₃S
2-(((3-(benzo[d][1,3]dioxol-5-yl)-1,2,4-oxadiazol-5-yl)methyl)thio)-3-(3-methoxypropyl)quinazolin-4(3H)-one	2-(((3-(benzo[d][1,3]dioxol-5-yl)-1,2,4-oxadiazol-5-yl)methyl)thio)-3-(3-methoxypropyl)quinazolin-4(3H)-one	分子量：452.5 密度：N/A 沸点：N/A 熔点：N/A	2034461-89-5	C₂₂H₂₀N₄O₅S
N-methoxy-N,4-dimethyl-2-(1H-pyrrol-1-yl)thiazole-5-carboxamide	N-methoxy-N,4-dimethyl-2-(1H-pyrrol-1-yl)thiazole-5-carboxamide	分子量：251.31 密度：N/A 沸点：N/A 熔点：N/A	2098030-87-4	C₁₁H₁₃N₃O₂S
4-[(1S)-2-amino-1-hydroxyethyl]-3-fluorophenol	4-[(1S)-2-amino-1-hydroxyethyl]-3-fluorophenol	分子量：171.17 密度：N/A 沸点：N/A 熔点：N/A	2227918-43-4	C₈H₁₀FNO₂
5-bromo-7-chloro-1H-benzo[d][1,2,3]triazole	5-bromo-7-chloro-1H-benzo[d][1,2,3]triazole	分子量：232.46 密度：N/A 沸点：N/A 熔点：N/A	1935384-46-5	C₆H₃BrClN₃
1-(4-((4-(Dimethylamino)piperidin-1-yl)methyl)piperidin-1-yl)ethanone	1-(4-((4-(Dimethylamino)piperidin-1-yl)methyl)piperidin-1-yl)ethanone	分子量：267.41 密度：N/A 沸点：N/A 熔点：N/A	2034475-61-9	C₁₅H₂₉N₃O
1-(2-(1H-pyrazol-1-yl)ethyl)-4-methylpiperazine	1-(2-(1H-pyrazol-1-yl)ethyl)-4-methylpiperazine	分子量：194.28 密度：N/A 沸点：N/A 熔点：N/A	1565371-94-9	C₁₀H₁₈N₄
1-(2-(1H-pyrazol-1-yl)ethyl)-2-methylpiperidine	1-(2-(1H-pyrazol-1-yl)ethyl)-2-methylpiperidine	分子量：193.29 密度：N/A 沸点：N/A 熔点：N/A	2034241-43-3	C₁₁H₁₉N₃
8-Bromo-6-methoxy-1,7-dimethyl-1,2,3,4-tetrahydro-1,5-naphthyridine	8-Bromo-6-methoxy-1,7-dimethyl-1,2,3,4-tetrahydro-1,5-naphthyridine	分子量：271.15 密度：N/A 沸点：N/A 熔点：N/A	1823547-75-6	C₁₁H₁₅BrN₂O
2-[(1R)-2-amino-1-hydroxyethyl]-4-fluorophenol	2-[(1R)-2-amino-1-hydroxyethyl]-4-fluorophenol	分子量：171.17 密度：N/A 沸点：N/A 熔点：N/A	2227857-54-5	C₈H₁₀FNO₂
4-[[6-Methyl-2-(1-methylethyl)-3H-imidazo[4,5-b]pyridin-3-yl]methyl]benzoic acid	4-[[6-Methyl-2-(1-methylethyl)-3H-imidazo[4,5-b]pyridin-3-yl]methyl]benzoic acid	分子量：309.4 密度：N/A 沸点：N/A 熔点：N/A	1215948-70-1	C₁₈H₁₉N₃O₂
(2R)-2-(2,6-Difluorophenyl)propan-1-amine	(2R)-2-(2,6-Difluorophenyl)propan-1-amine	分子量：171.19 密度：N/A 沸点：N/A 熔点：N/A	2248172-15-6	C₉H₁₁F₂N
4-((Tert-butoxycarbonyl)amino)cyclohexyl carbonochloridate	4-((Tert-butoxycarbonyl)amino)cyclohexyl carbonochloridate	分子量：277.74 密度：N/A 沸点：N/A 熔点：N/A	1649998-62-8	C₁₂H₂₀ClNO₄
5,7-Dichloro-2-(3-methoxyphenyl)-1H-benzo[d]imidazole	5,7-Dichloro-2-(3-methoxyphenyl)-1H-benzo[d]imidazole	分子量：293.1 密度：N/A 沸点：N/A 熔点：N/A	1801147-17-0	C₁₄H₁₀Cl₂N₂O
2-((Tert-butoxycarbonyl)amino)-4-(4-ethoxyphenyl)butanoic acid	2-((Tert-butoxycarbonyl)amino)-4-(4-ethoxyphenyl)butanoic acid	分子量：323.4 密度：N/A 沸点：N/A 熔点：N/A	2097943-60-5	C₁₇H₂₅NO₅
2-((Tert-butoxycarbonyl)amino)-4-(5-methylthiophen-2-yl)butanoic acid	2-((Tert-butoxycarbonyl)amino)-4-(5-methylthiophen-2-yl)butanoic acid	分子量：299.39 密度：N/A 沸点：N/A 熔点：N/A	2097953-43-8	C₁₄H₂₁NO₄S
2-((Tert-butoxycarbonyl)amino)-4-(4-(methylthio)phenyl)butanoic acid	2-((Tert-butoxycarbonyl)amino)-4-(4-(methylthio)phenyl)butanoic acid	分子量：325.4 密度：N/A 沸点：N/A 熔点：N/A	2097945-87-2	C₁₆H₂₃NO₄S
2-((tert-butoxycarbonyl)amino)-4-(1H-indol-3-yl)butanoic acid	2-((tert-butoxycarbonyl)amino)-4-(1H-indol-3-yl)butanoic acid	分子量：318.4 密度：N/A 沸点：N/A 熔点：N/A	2097953-52-9	C₁₇H₂₂N₂O₄
2-((Tert-butoxycarbonyl)amino)-4-(2,3-dihydrobenzofuran-5-yl)butanoic acid	2-((Tert-butoxycarbonyl)amino)-4-(2,3-dihydrobenzofuran-5-yl)butanoic acid	分子量：321.4 密度：N/A 沸点：N/A 熔点：N/A	1697614-26-8	C₁₇H₂₃NO₅
Tert-butyl 3-((4-cyanopyridin-3-yl)oxy)azetidine-1-carboxylate	Tert-butyl 3-((4-cyanopyridin-3-yl)oxy)azetidine-1-carboxylate	分子量：275.30 密度：N/A 沸点：N/A 熔点：N/A	2097955-85-4	C₁₄H₁₇N₃O₃
(3R)-3-Amino-3-(2-methylfuran-3-YL)propanoic acid	(3R)-3-Amino-3-(2-methylfuran-3-YL)propanoic acid	分子量：169.18 密度：N/A 沸点：N/A 熔点：N/A	1366376-70-6	C₈H₁₁NO₃
2-Amino-4-(3-methylthiophen-2-yl)butanoic acid	2-Amino-4-(3-methylthiophen-2-yl)butanoic acid	分子量：199.27 密度：N/A 沸点：N/A 熔点：N/A	1888613-08-8	C₉H₁₃NO₂S
(2S)-2-Methyl-3-(5-methylpyridin-3-yl)propanoic acid	(2S)-2-Methyl-3-(5-methylpyridin-3-yl)propanoic acid	分子量：179.22 密度：N/A 沸点：N/A 熔点：N/A	2248209-96-1	C₁₀H₁₃NO₂
(1S)-3-amino-1-(2-methylpyridin-4-yl)propan-1-ol	(1S)-3-amino-1-(2-methylpyridin-4-yl)propan-1-ol	分子量：166.22 密度：N/A 沸点：N/A 熔点：N/A	2227720-47-8	C₉H₁₄N₂O
(1R)-3-amino-1-(4-methylpyridin-3-yl)propan-1-ol	(1R)-3-amino-1-(4-methylpyridin-3-yl)propan-1-ol	分子量：166.22 密度：N/A 沸点：N/A 熔点：N/A	2227674-63-5	C₉H₁₄N₂O
6-(3-Methyl-2-oxoimidazolidin-1-yl)nicotinic acid	6-(3-Methyl-2-oxoimidazolidin-1-yl)nicotinic acid	分子量：221.21 密度：N/A 沸点：N/A 熔点：N/A	2089732-31-8	C₁₀H₁₁N₃O₃
3-((tetrahydro-2H-pyran-4-yl)methoxy)isonicotinonitrile	3-((tetrahydro-2H-pyran-4-yl)methoxy)isonicotinonitrile	分子量：218.25 密度：N/A 沸点：N/A 熔点：N/A	1517858-40-0	C₁₂H₁₄N₂O₂
3-((Tetrahydrofuran-2-yl)methoxy)isonicotinonitrile	3-((Tetrahydrofuran-2-yl)methoxy)isonicotinonitrile	分子量：204.22 密度：N/A 沸点：N/A 熔点：N/A	1537847-20-3	C₁₁H₁₂N₂O₂