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
t-Butyl 4-(3-carboxyquinoxalin-2-yl)-1,4-diazepane-1-carboxylate	t-Butyl 4-(3-carboxyquinoxalin-2-yl)-1,4-diazepane-1-carboxylate	分子量：372.4 密度：N/A 沸点：N/A 熔点：N/A	1858256-84-4	C₁₉H₂₄N₄O₄
t-Butyl 4-[3-(ethoxycarbonyl)quinoxalin-2-yl]-1,4-diazepane-1-carboxylate	t-Butyl 4-[3-(ethoxycarbonyl)quinoxalin-2-yl]-1,4-diazepane-1-carboxylate	分子量：400.5 密度：N/A 沸点：N/A 熔点：N/A	1858255-49-8	C₂₁H₂₈N₄O₄
Methyl 2,3,5-trifluoro-4-piperidin-1-ylbenzoate	Methyl 2,3,5-trifluoro-4-piperidin-1-ylbenzoate	分子量：273.25 密度：N/A 沸点：N/A 熔点：N/A	1858249-59-8	C₁₃H₁₄F₃NO₂
(+/-)-(1S,2S,5R*)-3-(tert-butoxycarbonyl)-6,6-dichloro-3-azabicyclo[3.1.0]hexane-2-carboxylic acid	(+/-)-(1S,2S,5R*)-3-(tert-butoxycarbonyl)-6,6-dichloro-3-azabicyclo[3.1.0]hexane-2-carboxylic acid	分子量：296.14 密度：N/A 沸点：N/A 熔点：N/A	1932796-74-1	C₁₁H₁₅Cl₂NO₄
(3R,7AS)-6-Methylidene-3-(trichloromethyl)-tetrahydropyrrolo[1,2-C][1,3]oxazol-1-one	(3R,7AS)-6-Methylidene-3-(trichloromethyl)-tetrahydropyrrolo[1,2-C][1,3]oxazol-1-one	分子量：256.5 密度：N/A 沸点：N/A 熔点：N/A	1932627-86-5	C₈H₈Cl₃NO₂
Z97X8R6Zxd	Z97X8R6Zxd	分子量：429.6 密度：N/A 沸点：N/A 熔点：N/A	1354716-94-1	C₂₃H₂₈FNO₄Si
2-(2-(2-(3-Aminophenoxyl)ethoxy)ethoxy)ethanol	2-(2-(2-(3-Aminophenoxyl)ethoxy)ethoxy)ethanol	分子量：241.28 密度：N/A 沸点：N/A 熔点：N/A	263770-42-9	C₁₂H₁₉NO₄
N-(1-((2,3-dihydrobenzo[b][1,4]dioxin-2-yl)methyl)-1H-pyrazol-4-yl)-5-(1,2-dithiolan-3-yl)pentanamide	N-(1-((2,3-dihydrobenzo[b][1,4]dioxin-2-yl)methyl)-1H-pyrazol-4-yl)-5-(1,2-dithiolan-3-yl)pentanamide	分子量：419.6 密度：N/A 沸点：N/A 熔点：N/A	1705877-03-7	C₂₀H₂₅N₃O₃S₂
3-chloro-N-(2-(1,5-dimethyl-1H-pyrazol-3-yl)ethyl)benzamide	3-chloro-N-(2-(1,5-dimethyl-1H-pyrazol-3-yl)ethyl)benzamide	分子量：277.75 密度：N/A 沸点：N/A 熔点：N/A	2034260-61-0	C₁₄H₁₆ClN₃O
Methyl (R)-4-aminocyclopent-1-ene-1-carboxylate	Methyl (R)-4-aminocyclopent-1-ene-1-carboxylate	分子量：141.17 密度：N/A 沸点：N/A 熔点：N/A	2088255-06-3	C₇H₁₁NO₂
[1-methyl-5-(pyridin-2-yl)-1H-1,2,3-triazol-4-yl]methanamine	[1-methyl-5-(pyridin-2-yl)-1H-1,2,3-triazol-4-yl]methanamine	分子量：189.22 密度：N/A 沸点：N/A 熔点：N/A	1502669-44-4	C₉H₁₁N₅
rac-[(1R,3R)-2,2-dimethyl-3-(3-methylphenyl)cyclopropyl]methanamine	rac-[(1R,3R)-2,2-dimethyl-3-(3-methylphenyl)cyclopropyl]methanamine	分子量：189.30 密度：N/A 沸点：N/A 熔点：N/A	2227768-86-5	C₁₃H₁₉N
rac-[(1R,3R)-2,2-dimethyl-3-(2-methylphenyl)cyclopropyl]methanamine	rac-[(1R,3R)-2,2-dimethyl-3-(2-methylphenyl)cyclopropyl]methanamine	分子量：189.30 密度：N/A 沸点：N/A 熔点：N/A	2227786-88-9	C₁₃H₁₉N
rac-[(1R,3R)-2,2-dimethyl-3-(4-methylphenyl)cyclopropyl]methanamine	rac-[(1R,3R)-2,2-dimethyl-3-(4-methylphenyl)cyclopropyl]methanamine	分子量：189.30 密度：N/A 沸点：N/A 熔点：N/A	2227880-90-0	C₁₃H₁₉N
Tert-butyl 5-(cyclopropylamino)-4,5,6,7-tetrahydro-2H-indazole-2-carboxylate	Tert-butyl 5-(cyclopropylamino)-4,5,6,7-tetrahydro-2H-indazole-2-carboxylate	分子量：277.36 密度：N/A 沸点：N/A 熔点：N/A	1431311-68-0	C₁₅H₂₃N₃O₂
4-(3-Chloro-5-fluoro-4-pyridinyl)benzoic acid ethyl ester	4-(3-Chloro-5-fluoro-4-pyridinyl)benzoic acid ethyl ester	分子量：279.69 密度：N/A 沸点：N/A 熔点：N/A	1431307-96-8	C₁₄H₁₁ClFNO₂
(2R)-pent-4-yn-2-amine	(2R)-pent-4-yn-2-amine	分子量：83.13 密度：N/A 沸点：N/A 熔点：N/A	2648851-85-6	C₅H₉N
1,1-Dimethylethyl [cis-4-(aminomethyl)-4-hydroxycyclohexyl]carbamate	1,1-Dimethylethyl [cis-4-(aminomethyl)-4-hydroxycyclohexyl]carbamate	分子量：244.33 密度：N/A 沸点：N/A 熔点：N/A	1223579-92-7	C₁₂H₂₄N₂O₃
7-Methoxy-1-methyl-1H-indole-4-carboxylic acid methyl ester	7-Methoxy-1-methyl-1H-indole-4-carboxylic acid methyl ester	分子量：219.24 密度：N/A 沸点：N/A 熔点：N/A	1431308-01-8	C₁₂H₁₃NO₃
1-(2-Hydroxy-2-methylpropyl)-1H-indole-4-carboxylic acid methyl ester	1-(2-Hydroxy-2-methylpropyl)-1H-indole-4-carboxylic acid methyl ester	分子量：247.29 密度：N/A 沸点：N/A 熔点：N/A	1431308-00-7	C₁₄H₁₇NO₃
Benzyl cyclopropyl(4,5,6,7-tetrahydro-1H-indazol-5-yl)carbamate	Benzyl cyclopropyl(4,5,6,7-tetrahydro-1H-indazol-5-yl)carbamate	分子量：311.4 密度：N/A 沸点：N/A 熔点：N/A	1431308-11-0	C₁₈H₂₁N₃O₂
1-[2-(Ethenyloxy)ethyl]-1H-indazole-4-carboxylic acid methyl ester	1-[2-(Ethenyloxy)ethyl]-1H-indazole-4-carboxylic acid methyl ester	分子量：246.26 密度：N/A 沸点：N/A 熔点：N/A	1431310-26-7	C₁₃H₁₄N₂O₃
3-Bromo-6-[[(1,1-dimethylethyl)diphenylsilyl]oxy]benzo[b]thiophene	3-Bromo-6-[[(1,1-dimethylethyl)diphenylsilyl]oxy]benzo[b]thiophene	分子量：467.5 密度：N/A 沸点：N/A 熔点：N/A	1431308-27-8	C₂₄H₂₃BrOSSi
N-cyclopropyl-4-isopropoxy-N-(1,4-dioxaspiro[4.5]decan-8-yl)benzamide	N-cyclopropyl-4-isopropoxy-N-(1,4-dioxaspiro[4.5]decan-8-yl)benzamide	分子量：359.5 密度：N/A 沸点：N/A 熔点：N/A	1431311-66-8	C₂₁H₂₉NO₄
Benzyl 6,7-dihydrospiro[indazole-5,2'-[1,3]dioxolane]-2(4h)-carboxylate	Benzyl 6,7-dihydrospiro[indazole-5,2'-[1,3]dioxolane]-2(4h)-carboxylate	分子量：314.34 密度：N/A 沸点：N/A 熔点：N/A	1431308-15-4	C₁₇H₁₈N₂O₄
1-(8-Hydroxy-1,4-dioxaspiro[4.5]dec-7-EN-7-YL)ethan-1-one	1-(8-Hydroxy-1,4-dioxaspiro[4.5]dec-7-EN-7-YL)ethan-1-one	分子量：198.22 密度：N/A 沸点：N/A 熔点：N/A	1431311-76-0	C₁₀H₁₄O₄
Methyl 1-(2-cyclopropoxyethyl)-1H-indazole-4-carboxylate	Methyl 1-(2-cyclopropoxyethyl)-1H-indazole-4-carboxylate	分子量：260.29 密度：N/A 沸点：N/A 熔点：N/A	1431308-26-7	C₁₄H₁₆N₂O₃
(1R,3R)-2,2-Dimethyl-3-pyridin-4-ylcyclopropane-1-carboxylic acid	(1R,3R)-2,2-Dimethyl-3-pyridin-4-ylcyclopropane-1-carboxylic acid	分子量：191.23 密度：N/A 沸点：N/A 熔点：N/A	2227725-59-7	C₁₁H₁₃NO₂
rac-(1R,3R)-2,2-dimethyl-3-(pyridin-2-yl)cyclopropane-1-carboxylic acid	rac-(1R,3R)-2,2-dimethyl-3-(pyridin-2-yl)cyclopropane-1-carboxylic acid	分子量：191.23 密度：N/A 沸点：N/A 熔点：N/A	2227802-53-9	C₁₁H₁₃NO₂
4-(3,5-Dichloro-4-pyridinyl)benzoic acid methyl ester	4-(3,5-Dichloro-4-pyridinyl)benzoic acid methyl ester	分子量：282.12 密度：N/A 沸点：N/A 熔点：N/A	1456869-52-5	C₁₃H₉Cl₂NO₂
rac-(1R,3R)-2,2-dimethyl-3-(pyridin-3-yl)cyclopropane-1-carboxylic acid	rac-(1R,3R)-2,2-dimethyl-3-(pyridin-3-yl)cyclopropane-1-carboxylic acid	分子量：191.23 密度：N/A 沸点：N/A 熔点：N/A	2227914-68-1	C₁₁H₁₃NO₂
Methyl 1-(2-(2-oxopyrrolidin-1-yl)ethyl)-1H-indole-4-carboxylate	Methyl 1-(2-(2-oxopyrrolidin-1-yl)ethyl)-1H-indole-4-carboxylate	分子量：286.33 密度：N/A 沸点：N/A 熔点：N/A	1431307-98-0	C₁₆H₁₈N₂O₃
Benzyl cyclopropyl(2-methoxy-5,6,7,8-tetrahydroquinazolin-6-yl)carbamate	Benzyl cyclopropyl(2-methoxy-5,6,7,8-tetrahydroquinazolin-6-yl)carbamate	分子量：353.4 密度：N/A 沸点：N/A 熔点：N/A	1431308-35-8	C₂₀H₂₃N₃O₃
Tert-butyl 4-(3-(4-nitrophenyl)propyl)piperazine-1-carboxylate	Tert-butyl 4-(3-(4-nitrophenyl)propyl)piperazine-1-carboxylate	分子量：349.4 密度：N/A 沸点：N/A 熔点：N/A	1432126-02-7	C₁₈H₂₇N₃O₄
(2S)-5-(4-Methoxyphenyl)pentan-2-amine	(2S)-5-(4-Methoxyphenyl)pentan-2-amine	分子量：193.28 密度：N/A 沸点：N/A 熔点：N/A	2248184-04-3	C₁₂H₁₉NO
(S)-7-Methoxy-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid	(S)-7-Methoxy-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid	分子量：207.23 密度：N/A 沸点：N/A 熔点：N/A	190579-84-1	C₁₁H₁₃NO₃
rac-(1R,3R)-2,2-dimethyl-3-(5-methylfuran-2-yl)cyclopropane-1-carboxylic acid	rac-(1R,3R)-2,2-dimethyl-3-(5-methylfuran-2-yl)cyclopropane-1-carboxylic acid	分子量：194.23 密度：N/A 沸点：N/A 熔点：N/A	2227852-99-3	C₁₁H₁₄O₃
(2S)-2-amino-3-(3-chloro-2-fluorophenyl)propanoic acid	(2S)-2-amino-3-(3-chloro-2-fluorophenyl)propanoic acid	分子量：217.62 密度：N/A 沸点：N/A 熔点：N/A	1039622-53-1	C₉H₉ClFNO₂
(R)-2-Amino-3-(2-chloro-5-(trifluoromethyl)phenyl)propanoic acid	(R)-2-Amino-3-(2-chloro-5-(trifluoromethyl)phenyl)propanoic acid	分子量：267.63 密度：N/A 沸点：N/A 熔点：N/A	1270265-15-0	C₁₀H₉ClF₃NO₂
(2S)-2-Amino-3-(6-chloro-2-fluoro-3-methylphenyl)propanoic acid	(2S)-2-Amino-3-(6-chloro-2-fluoro-3-methylphenyl)propanoic acid	分子量：231.65 密度：N/A 沸点：N/A 熔点：N/A	1269976-88-6	C₁₀H₁₁ClFNO₂
2-Fluoro-5-methyl-D-phenylalanine	2-Fluoro-5-methyl-D-phenylalanine	分子量：197.21 密度：N/A 沸点：N/A 熔点：N/A	1212900-32-7	C₁₀H₁₂FNO₂
rac-[(1R,3R)-2,2-dimethyl-3-(5-methylthiophen-2-yl)cyclopropyl]methanamine	rac-[(1R,3R)-2,2-dimethyl-3-(5-methylthiophen-2-yl)cyclopropyl]methanamine	分子量：195.33 密度：N/A 沸点：N/A 熔点：N/A	2227891-80-5	C₁₁H₁₇NS
rac-(1R,3R)-2,2-dimethyl-3-(thiophen-2-yl)cyclopropane-1-carboxylic acid	rac-(1R,3R)-2,2-dimethyl-3-(thiophen-2-yl)cyclopropane-1-carboxylic acid	分子量：196.27 密度：N/A 沸点：N/A 熔点：N/A	2227866-14-8	C₁₀H₁₂O₂S
rac-[(1R,3R)-2,2-dimethyl-3-(2-methyl-1,3-thiazol-5-yl)cyclopropyl]methanamine	rac-[(1R,3R)-2,2-dimethyl-3-(2-methyl-1,3-thiazol-5-yl)cyclopropyl]methanamine	分子量：196.31 密度：N/A 沸点：N/A 熔点：N/A	2227836-04-4	C₁₀H₁₆N₂S
2-(2,4,5-Tribromo-1h-imidazol-1-yl)-N-isopropylacetamide	2-(2,4,5-Tribromo-1h-imidazol-1-yl)-N-isopropylacetamide	分子量：403.90 密度：N/A 沸点：N/A 熔点：N/A	1431952-42-9	C₈H₁₀Br₃N₃O
rac-(1R,3R)-2,2-dimethyl-3-(1,3-thiazol-5-yl)cyclopropane-1-carboxylic acid	rac-(1R,3R)-2,2-dimethyl-3-(1,3-thiazol-5-yl)cyclopropane-1-carboxylic acid	分子量：197.26 密度：N/A 沸点：N/A 熔点：N/A	2227697-23-4	C₉H₁₁NO₂S
3-Methoxy-1-[(5-methylthiophen-2-yl)methyl]-1-(propan-2-yl)urea	3-Methoxy-1-[(5-methylthiophen-2-yl)methyl]-1-(propan-2-yl)urea	分子量：242.34 密度：N/A 沸点：N/A 熔点：N/A	1798730-79-6	C₁₁H₁₈N₂O₂S
Benzenemethanol, I+/--[(1S)-1-amino-2-methylpropyl]-2-methyl-, (I+/-S)-	Benzenemethanol, I+/--[(1S)-1-amino-2-methylpropyl]-2-methyl-, (I+/-S)-	分子量：193.28 密度：N/A 沸点：N/A 熔点：N/A	1821727-21-2	C₁₂H₁₉NO
1-[(4-Aminophenyl)sulfonyl]-D-proline methyl ester	1-[(4-Aminophenyl)sulfonyl]-D-proline methyl ester	分子量：284.33 密度：N/A 沸点：N/A 熔点：N/A	2363762-78-9	C₁₂H₁₆N₂O₄S
tert-butyl 4-[(3R)-piperidin-3-yl]piperazine-1-carboxylate	tert-butyl 4-[(3R)-piperidin-3-yl]piperazine-1-carboxylate	分子量：269.38 密度：N/A 沸点：N/A 熔点：N/A	2349624-01-5	C₁₄H₂₇N₃O₂