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-cyclopropyl-4-methyl-3,4-dihydro-2H-1-benzopyran-6-sulfonyl chloride	2-cyclopropyl-4-methyl-3,4-dihydro-2H-1-benzopyran-6-sulfonyl chloride	分子量：286.77 密度：N/A 沸点：N/A 熔点：N/A	2172447-10-6	C₁₃H₁₅ClO₃S
2-ethyl-4-methyl-3,4-dihydro-2H-1-benzopyran-6-sulfonyl fluoride	2-ethyl-4-methyl-3,4-dihydro-2H-1-benzopyran-6-sulfonyl fluoride	分子量：258.31 密度：N/A 沸点：N/A 熔点：N/A	2171987-62-3	C₁₂H₁₅FO₃S
4-methyl-2-(propan-2-yl)-3,4-dihydro-2H-1-benzopyran-6-sulfonyl fluoride	4-methyl-2-(propan-2-yl)-3,4-dihydro-2H-1-benzopyran-6-sulfonyl fluoride	分子量：272.34 密度：N/A 沸点：N/A 熔点：N/A	2172059-40-2	C₁₃H₁₇FO₃S
2-cyclopropyl-4-methyl-3,4-dihydro-2H-1-benzopyran-6-sulfonamide	2-cyclopropyl-4-methyl-3,4-dihydro-2H-1-benzopyran-6-sulfonamide	分子量：267.35 密度：N/A 沸点：N/A 熔点：N/A	2171987-66-7	C₁₃H₁₇NO₃S
8-[1-(Hydroxymethyl)cyclobutyl]-2-azabicyclo[3.3.1]nonan-8-ol	8-[1-(Hydroxymethyl)cyclobutyl]-2-azabicyclo[3.3.1]nonan-8-ol	分子量：225.33 密度：N/A 沸点：N/A 熔点：N/A	2171910-73-7	C₁₃H₂₃NO₂
5-benzyl-2,2-dioxo-hexahydro-1H-2lambda6-thieno[3,4-c]pyrrole-3a-carboxylic acid	5-benzyl-2,2-dioxo-hexahydro-1H-2lambda6-thieno[3,4-c]pyrrole-3a-carboxylic acid	分子量：295.36 密度：N/A 沸点：N/A 熔点：N/A	2172544-87-3	C₁₄H₁₇NO₄S
2-(2-Methanesulfonamidoethyl)piperidine-1-carbonyl chloride	2-(2-Methanesulfonamidoethyl)piperidine-1-carbonyl chloride	分子量：268.76 密度：N/A 沸点：N/A 熔点：N/A	2172059-53-7	C₉H₁₇ClN₂O₃S
2-(2-Methanesulfonamidoethyl)piperidine-1-sulfonyl chloride	2-(2-Methanesulfonamidoethyl)piperidine-1-sulfonyl chloride	分子量：304.8 密度：N/A 沸点：N/A 熔点：N/A	2172074-07-4	C₈H₁₇ClN₂O₄S₂
4-Methyl-decahydroquinoline-1-carbonyl chloride	4-Methyl-decahydroquinoline-1-carbonyl chloride	分子量：215.72 密度：N/A 沸点：N/A 熔点：N/A	2172059-58-2	C₁₁H₁₈ClNO
Methyl 3-[(chlorocarbonyl)(methyl)amino]propanoate	Methyl 3-[(chlorocarbonyl)(methyl)amino]propanoate	分子量：179.60 密度：N/A 沸点：N/A 熔点：N/A	39617-41-9	C₆H₁₀ClNO₃
Methyl 5-ethyl-4-sulfamoylfuran-2-carboxylate	Methyl 5-ethyl-4-sulfamoylfuran-2-carboxylate	分子量：233.24 密度：N/A 沸点：N/A 熔点：N/A	2172544-97-5	C₈H₁₁NO₅S
4-Chlorothiophene-3-sulfonamide	4-Chlorothiophene-3-sulfonamide	分子量：197.7 密度：N/A 沸点：N/A 熔点：N/A	2171988-17-1	C₄H₄ClNO₂S₂
2-Methyl-5-(4-methyl-1,3-oxazol-2-yl)benzene-1-sulfonamide	2-Methyl-5-(4-methyl-1,3-oxazol-2-yl)benzene-1-sulfonamide	分子量：252.29 密度：N/A 沸点：N/A 熔点：N/A	2171934-53-3	C₁₁H₁₂N₂O₃S
2-Bromo-4-methanesulfonylbenzene-1-sulfonamide	2-Bromo-4-methanesulfonylbenzene-1-sulfonamide	分子量：314.2 密度：N/A 沸点：N/A 熔点：N/A	2172266-77-0	C₇H₈BrNO₄S₂
1-(1-cyclopropyl-3-propyl-1H-pyrazol-5-yl)ethan-1-amine	1-(1-cyclopropyl-3-propyl-1H-pyrazol-5-yl)ethan-1-amine	分子量：193.29 密度：N/A 沸点：N/A 熔点：N/A	2172542-13-9	C₁₁H₁₉N₃
1-(3-cyclobutyl-1-cyclopropyl-1H-pyrazol-5-yl)ethan-1-amine	1-(3-cyclobutyl-1-cyclopropyl-1H-pyrazol-5-yl)ethan-1-amine	分子量：205.30 密度：N/A 沸点：N/A 熔点：N/A	2172545-14-9	C₁₂H₁₉N₃
[3-(4-Fluorophenyl)-1,2-oxazol-5-yl]methanesulfonamide	[3-(4-Fluorophenyl)-1,2-oxazol-5-yl]methanesulfonamide	分子量：256.26 密度：N/A 沸点：N/A 熔点：N/A	2171935-02-5	C₁₀H₉FN₂O₃S
3-[1-(Hydroxymethyl)cyclopentyl]-1-azabicyclo[2.2.2]octan-3-ol	3-[1-(Hydroxymethyl)cyclopentyl]-1-azabicyclo[2.2.2]octan-3-ol	分子量：225.33 密度：N/A 沸点：N/A 熔点：N/A	2172256-54-9	C₁₃H₂₃NO₂
1-[1-(Hydroxymethyl)cyclopentyl]-4,4-dimethylcycloheptan-1-ol	1-[1-(Hydroxymethyl)cyclopentyl]-4,4-dimethylcycloheptan-1-ol	分子量：240.38 密度：N/A 沸点：N/A 熔点：N/A	2172014-95-6	C₁₅H₂₈O₂
Ethyl 3-(3-hydroxythiolan-3-yl)oxane-3-carboxylate	Ethyl 3-(3-hydroxythiolan-3-yl)oxane-3-carboxylate	分子量：260.35 密度：N/A 沸点：N/A 熔点：N/A	2172060-02-3	C₁₂H₂₀O₄S
Methyl 4-(4-hydroxyoxan-4-yl)thiane-4-carboxylate	Methyl 4-(4-hydroxyoxan-4-yl)thiane-4-carboxylate	分子量：260.35 密度：N/A 沸点：N/A 熔点：N/A	2172542-28-6	C₁₂H₂₀O₄S
[1-(2-chloro-6-methylphenyl)-1H-pyrazol-5-yl]methanol	[1-(2-chloro-6-methylphenyl)-1H-pyrazol-5-yl]methanol	分子量：222.67 密度：N/A 沸点：N/A 熔点：N/A	2172074-36-9	C₁₁H₁₁ClN₂O
[1-(3-fluoro-4-methylphenyl)-1H-pyrazol-5-yl]methanol	[1-(3-fluoro-4-methylphenyl)-1H-pyrazol-5-yl]methanol	分子量：206.22 密度：N/A 沸点：N/A 熔点：N/A	2172156-87-3	C₁₁H₁₁FN₂O
5-(chloromethyl)-1-(3-fluorophenyl)-1H-pyrazole	5-(chloromethyl)-1-(3-fluorophenyl)-1H-pyrazole	分子量：210.63 密度：N/A 沸点：N/A 熔点：N/A	2172545-68-3	C₁₀H₈ClFN₂
5-(chloromethyl)-1-(2,5-difluorophenyl)-1H-pyrazole	5-(chloromethyl)-1-(2,5-difluorophenyl)-1H-pyrazole	分子量：228.62 密度：N/A 沸点：N/A 熔点：N/A	2172256-90-3	C₁₀H₇ClF₂N₂
1-(4-chloro-2-methylphenyl)-5-(chloromethyl)-1H-pyrazole	1-(4-chloro-2-methylphenyl)-5-(chloromethyl)-1H-pyrazole	分子量：241.11 密度：N/A 沸点：N/A 熔点：N/A	2171912-57-3	C₁₁H₁₀Cl₂N₂
1-(2-chloro-4-fluorophenyl)-5-(chloromethyl)-1H-pyrazole	1-(2-chloro-4-fluorophenyl)-5-(chloromethyl)-1H-pyrazole	分子量：245.08 密度：N/A 沸点：N/A 熔点：N/A	2171892-54-7	C₁₀H₇Cl₂FN₂
[1-(cyclopropylmethyl)-5-(propan-2-yl)-1H-1,2,3-triazol-4-yl]methanol	[1-(cyclopropylmethyl)-5-(propan-2-yl)-1H-1,2,3-triazol-4-yl]methanol	分子量：195.26 密度：N/A 沸点：N/A 熔点：N/A	2172256-97-0	C₁₀H₁₇N₃O
[1-(1-cyclopropylethyl)-5-(propan-2-yl)-1H-1,2,3-triazol-4-yl]methanol	[1-(1-cyclopropylethyl)-5-(propan-2-yl)-1H-1,2,3-triazol-4-yl]methanol	分子量：209.29 密度：N/A 沸点：N/A 熔点：N/A	2172216-59-8	C₁₁H₁₉N₃O
[1-(1-cyclobutylethyl)-5-(propan-2-yl)-1H-1,2,3-triazol-4-yl]methanol	[1-(1-cyclobutylethyl)-5-(propan-2-yl)-1H-1,2,3-triazol-4-yl]methanol	分子量：223.31 密度：N/A 沸点：N/A 熔点：N/A	2171988-80-8	C₁₂H₂₁N₃O
Tert-butyl 3-hydroxy-4-(4-methyl-1,3-thiazol-5-yl)pyrrolidine-1-carboxylate	Tert-butyl 3-hydroxy-4-(4-methyl-1,3-thiazol-5-yl)pyrrolidine-1-carboxylate	分子量：284.38 密度：N/A 沸点：N/A 熔点：N/A	2171956-85-5	C₁₃H₂₀N₂O₃S
Lithium(1+) 4-(methoxymethyl)thiophene-2-sulfinate	Lithium(1+) 4-(methoxymethyl)thiophene-2-sulfinate	分子量：198.2 密度：N/A 沸点：N/A 熔点：N/A	2731014-07-4	C₆H₇LiO₃S₂
rac-(3R,4S)-4-(2-methyl-2H-1,2,3-triazol-4-yl)oxolan-3-ol	rac-(3R,4S)-4-(2-methyl-2H-1,2,3-triazol-4-yl)oxolan-3-ol	分子量：169.18 密度：N/A 沸点：N/A 熔点：N/A	2227863-45-6	C₇H₁₁N₃O₂
(5-(4-Methoxyphenyl)-3-azabicyclo[3.1.1]heptan-1-yl)methanol	(5-(4-Methoxyphenyl)-3-azabicyclo[3.1.1]heptan-1-yl)methanol	分子量：233.31 密度：N/A 沸点：N/A 熔点：N/A	2731009-79-1	C₁₄H₁₉NO₂
3-(2-chloro-1-methyl-1H-imidazol-5-yl)butan-2-ol	3-(2-chloro-1-methyl-1H-imidazol-5-yl)butan-2-ol	分子量：188.65 密度：N/A 沸点：N/A 熔点：N/A	2020657-18-3	C₈H₁₃ClN₂O
tert-butyl 3-hydroxy-4-[(2-methyl-2H-1,2,3,4-tetrazol-5-yl)methyl]pyrrolidine-1-carboxylate	tert-butyl 3-hydroxy-4-[(2-methyl-2H-1,2,3,4-tetrazol-5-yl)methyl]pyrrolidine-1-carboxylate	分子量：283.33 密度：N/A 沸点：N/A 熔点：N/A	2159972-02-6	C₁₂H₂₁N₅O₃
rac-(3R,4R)-4-(4-bromo-1-methyl-1H-pyrazol-5-yl)pyrrolidin-3-ol	rac-(3R,4R)-4-(4-bromo-1-methyl-1H-pyrazol-5-yl)pyrrolidin-3-ol	分子量：246.10 密度：N/A 沸点：N/A 熔点：N/A	2165818-22-2	C₈H₁₂BrN₃O
[1-(2,5-dimethylphenyl)-1H-pyrazol-5-yl]methanamine	[1-(2,5-dimethylphenyl)-1H-pyrazol-5-yl]methanamine	分子量：201.27 密度：N/A 沸点：N/A 熔点：N/A	2172542-61-7	C₁₂H₁₅N₃
[1-(3,4-difluorophenyl)-1H-pyrazol-5-yl]methanamine	[1-(3,4-difluorophenyl)-1H-pyrazol-5-yl]methanamine	分子量：209.20 密度：N/A 沸点：N/A 熔点：N/A	2171989-05-0	C₁₀H₉F₂N₃
methyl (2S)-2-amino-5,5-difluoropentanoate	methyl (2S)-2-amino-5,5-difluoropentanoate	分子量：167.15 密度：N/A 沸点：N/A 熔点：N/A	2349536-89-4	C₆H₁₁F₂NO₂
[1-(3-chloro-4-fluorophenyl)-1H-pyrazol-5-yl]methanamine	[1-(3-chloro-4-fluorophenyl)-1H-pyrazol-5-yl]methanamine	分子量：225.65 密度：N/A 沸点：N/A 熔点：N/A	2171956-96-8	C₁₀H₉ClFN₃
[1-(3,5-difluorophenyl)-1H-pyrazol-5-yl]methanamine	[1-(3,5-difluorophenyl)-1H-pyrazol-5-yl]methanamine	分子量：209.20 密度：N/A 沸点：N/A 熔点：N/A	2172015-10-8	C₁₀H₉F₂N₃
{1-[2-fluoro-5-(trifluoromethyl)phenyl]-1H-pyrazol-5-yl}methanamine	{1-[2-fluoro-5-(trifluoromethyl)phenyl]-1H-pyrazol-5-yl}methanamine	分子量：259.20 密度：N/A 沸点：N/A 熔点：N/A	2171848-75-0	C₁₁H₉F₄N₃
Lithium 3-bromo-5-isopropylbenzenesulfinate	Lithium 3-bromo-5-isopropylbenzenesulfinate	分子量：269.1 密度：N/A 沸点：N/A 熔点：N/A	2731014-10-9	C₉H₁₀BrLiO₂S
7-bromo-3-[(cyclopropylamino)methyl]-1,4-dimethyl-1H-indole-2-carbonitrile	7-bromo-3-[(cyclopropylamino)methyl]-1,4-dimethyl-1H-indole-2-carbonitrile	分子量：318.21 密度：N/A 沸点：N/A 熔点：N/A	2172060-28-3	C₁₅H₁₆BrN₃
3-[(cyclopropylamino)methyl]-1-methyl-4-(trifluoromethoxy)-1H-indole-2-carbonitrile	3-[(cyclopropylamino)methyl]-1-methyl-4-(trifluoromethoxy)-1H-indole-2-carbonitrile	分子量：309.29 密度：N/A 沸点：N/A 熔点：N/A	2171989-20-9	C₁₅H₁₄F₃N₃O
[5-cyclobutyl-1-(pentan-3-yl)-1H-1,2,3-triazol-4-yl]methanol	[5-cyclobutyl-1-(pentan-3-yl)-1H-1,2,3-triazol-4-yl]methanol	分子量：223.31 密度：N/A 沸点：N/A 熔点：N/A	2171849-23-1	C₁₂H₂₁N₃O
[5-cyclobutyl-1-(2,2,2-trifluoroethyl)-1H-1,2,3-triazol-4-yl]methanol	[5-cyclobutyl-1-(2,2,2-trifluoroethyl)-1H-1,2,3-triazol-4-yl]methanol	分子量：235.21 密度：N/A 沸点：N/A 熔点：N/A	2171957-37-0	C₉H₁₂F₃N₃O
rac-tert-butyl (3R,4R)-3-hydroxy-4-(1-methyl-1H-imidazol-4-yl)pyrrolidine-1-carboxylate	rac-tert-butyl (3R,4R)-3-hydroxy-4-(1-methyl-1H-imidazol-4-yl)pyrrolidine-1-carboxylate	分子量：267.32 密度：N/A 沸点：N/A 熔点：N/A	2227706-59-2	C₁₃H₂₁N₃O₃
4-(5-Methoxythiophen-2-yl)pyrrolidin-3-ol	4-(5-Methoxythiophen-2-yl)pyrrolidin-3-ol	分子量：199.27 密度：N/A 沸点：N/A 熔点：N/A	2167097-26-7	C₉H₁₃NO₂S