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
3-Bromo-4-chloro-5-nitrobenzonitrile	3-Bromo-4-chloro-5-nitrobenzonitrile	分子量：261.46 密度：N/A 沸点：N/A 熔点：N/A	1541253-44-4	C₇H₂BrClN₂O₂
3-Amino-5-bromo-4-chlorobenzonitrile	3-Amino-5-bromo-4-chlorobenzonitrile	分子量：231.48 密度：N/A 沸点：N/A 熔点：N/A	1541253-45-5	C₇H₄BrClN₂
Methyl 3-bromo-5-((tert-butoxycarbonyl)amino)-4-chlorobenzoate	Methyl 3-bromo-5-((tert-butoxycarbonyl)amino)-4-chlorobenzoate	分子量：364.62 密度：N/A 沸点：N/A 熔点：N/A	1541253-52-4	C₁₃H₁₅BrClNO₄
Methyl 3-(bis(tert-butoxycarbonyl)amino)-5-bromo-4-chlorobenzoate	Methyl 3-(bis(tert-butoxycarbonyl)amino)-5-bromo-4-chlorobenzoate	分子量：464.7 密度：N/A 沸点：N/A 熔点：N/A	1541253-54-6	C₁₈H₂₃BrClNO₆
3-Bromo-5-((tert-butoxycarbonyl)amino)-4-chlorobenzoic acid	3-Bromo-5-((tert-butoxycarbonyl)amino)-4-chlorobenzoic acid	分子量：350.59 密度：N/A 沸点：N/A 熔点：N/A	1541253-56-8	C₁₂H₁₃BrClNO₄
Tert-butyl methyl (5-bromo-4-chloro-1,3-phenylene)dicarbamate	Tert-butyl methyl (5-bromo-4-chloro-1,3-phenylene)dicarbamate	分子量：379.63 密度：N/A 沸点：N/A 熔点：N/A	1541253-57-9	C₁₃H₁₆BrClN₂O₄
Tert-butyl (3-bromo-2-chloro-5-(hydroxymethyl)phenyl)carbamate	Tert-butyl (3-bromo-2-chloro-5-(hydroxymethyl)phenyl)carbamate	分子量：336.61 密度：N/A 沸点：N/A 熔点：N/A	1541253-63-7	C₁₂H₁₅BrClNO₃
ethyl 1-((ethoxycarbonyl)amino)-1H-imidazole-2-carboxylate	ethyl 1-((ethoxycarbonyl)amino)-1H-imidazole-2-carboxylate	分子量：227.22 密度：N/A 沸点：N/A 熔点：N/A	1541253-67-1	C₉H₁₃N₃O₄
3-Amino-4-chloro-5-(piperazin-1-yl)benzonitrile	3-Amino-4-chloro-5-(piperazin-1-yl)benzonitrile	分子量：236.70 密度：N/A 沸点：N/A 熔点：N/A	1541253-75-1	C₁₁H₁₃ClN₄
Tert-butyl (1-(3-amino-2-chloro-5-cyanophenyl)piperidin-4-yl)carbamate	Tert-butyl (1-(3-amino-2-chloro-5-cyanophenyl)piperidin-4-yl)carbamate	分子量：350.8 密度：N/A 沸点：N/A 熔点：N/A	1541253-80-8	C₁₇H₂₃ClN₄O₂
Tert-butyl (3-bromo-2-chloro-5-cyanophenyl)carbamate	Tert-butyl (3-bromo-2-chloro-5-cyanophenyl)carbamate	分子量：331.59 密度：N/A 沸点：N/A 熔点：N/A	1541253-43-3	C₁₂H₁₂BrClN₂O₂
3-Amino-5-(4-((tert-butyldimethylsilyl)oxy)piperidin-1-yl)-4-chlorobenzonitrile	3-Amino-5-(4-((tert-butyldimethylsilyl)oxy)piperidin-1-yl)-4-chlorobenzonitrile	分子量：366.0 密度：N/A 沸点：N/A 熔点：N/A	1541253-84-2	C₁₈H₂₈ClN₃OSi
tert-butyl 5-amino-3,4-dihydro-2,7-naphthyridine-2(1H)-carboxylate	tert-butyl 5-amino-3,4-dihydro-2,7-naphthyridine-2(1H)-carboxylate	分子量：249.31 密度：N/A 沸点：N/A 熔点：N/A	1613199-18-0	C₁₃H₁₉N₃O₂
5-Fluoro-4-(1-methylpiperidin-4-yl)pyridin-3-amine	5-Fluoro-4-(1-methylpiperidin-4-yl)pyridin-3-amine	分子量：209.26 密度：N/A 沸点：N/A 熔点：N/A	1613199-65-7	C₁₁H₁₆FN₃
5-(1-Chloroethyl)-3-(3,4,5-trifluorophenyl)-4,5-dihydro-1,2-oxazole	5-(1-Chloroethyl)-3-(3,4,5-trifluorophenyl)-4,5-dihydro-1,2-oxazole	分子量：263.64 密度：N/A 沸点：N/A 熔点：N/A	1557686-97-1	C₁₁H₉ClF₃NO
6-methyl-4-(5-nitro-2-(tetrahydro-2H-pyran-4-yloxy)phenyl)-1H-pyrrolo[2,3-c]pyridin-7(6H)-one	6-methyl-4-(5-nitro-2-(tetrahydro-2H-pyran-4-yloxy)phenyl)-1H-pyrrolo[2,3-c]pyridin-7(6H)-one	分子量：369.4 密度：N/A 沸点：N/A 熔点：N/A	1445993-94-1	C₁₉H₁₉N₃O₅
4-(2,4-Difluorophenoxy)-3-nitrobenzenesulfonamide	4-(2,4-Difluorophenoxy)-3-nitrobenzenesulfonamide	分子量：330.27 密度：N/A 沸点：N/A 熔点：N/A	1446236-05-0	C₁₂H₈F₂N₂O₅S
Benzene, 2-bromo-1-fluoro-4-[(trifluoromethyl)thio]-	Benzene, 2-bromo-1-fluoro-4-[(trifluoromethyl)thio]-	分子量：275.06 密度：N/A 沸点：N/A 熔点：N/A	1446236-95-8	C₇H₃BrF₄S
1-((3-Bromo-4-fluorophenyl)sulfonyl)-3,3-difluoroazetidine	1-((3-Bromo-4-fluorophenyl)sulfonyl)-3,3-difluoroazetidine	分子量：330.12 密度：N/A 沸点：N/A 熔点：N/A	1446236-43-6	C₉H₇BrF₃NO₂S
N-((3-(Amino(4-methoxyphenyl)methyl)-1H-1,2,4-triazol-5-yl)methyl)-3-methoxyaniline	N-((3-(Amino(4-methoxyphenyl)methyl)-1H-1,2,4-triazol-5-yl)methyl)-3-methoxyaniline	分子量：339.4 密度：N/A 沸点：N/A 熔点：N/A	1707585-95-2	C₁₈H₂₁N₅O₂
(4-Chlorophenyl)(5-(o-tolyl)-1H-1,2,4-triazol-3-yl)methanamine	(4-Chlorophenyl)(5-(o-tolyl)-1H-1,2,4-triazol-3-yl)methanamine	分子量：298.77 密度：N/A 沸点：N/A 熔点：N/A	1708159-71-0	C₁₆H₁₅ClN₄
Phenylmethyl 3-amino-4H-pyrrolo[3,4-c]isoxazole-5(6H)-carboxylate	Phenylmethyl 3-amino-4H-pyrrolo[3,4-c]isoxazole-5(6H)-carboxylate	分子量：259.26 密度：N/A 沸点：N/A 熔点：N/A	14299-24-2	C₁₃H₁₃N₃O₃
(3-Cyano-phenyl)-hydroxy-acetic acid	(3-Cyano-phenyl)-hydroxy-acetic acid	分子量：177.16 密度：N/A 沸点：N/A 熔点：N/A	54440-91-4	C₉H₇NO₃
(5-(2-Chlorophenyl)-1H-1,2,4-triazol-3-yl)(4-fluorophenyl)methanamine	(5-(2-Chlorophenyl)-1H-1,2,4-triazol-3-yl)(4-fluorophenyl)methanamine	分子量：302.73 密度：N/A 沸点：N/A 熔点：N/A	1707735-74-7	C₁₅H₁₂ClFN₄
(4-Fluorophenyl)(5-(3-(trifluoromethyl)phenyl)-1H-1,2,4-triazol-3-yl)methanamine	(4-Fluorophenyl)(5-(3-(trifluoromethyl)phenyl)-1H-1,2,4-triazol-3-yl)methanamine	分子量：336.29 密度：N/A 沸点：N/A 熔点：N/A	1707375-94-7	C₁₆H₁₂F₄N₄
3-Amino-2-(2,6-difluoro-3-methylphenyl)propanoic acid	3-Amino-2-(2,6-difluoro-3-methylphenyl)propanoic acid	分子量：215.20 密度：N/A 沸点：N/A 熔点：N/A	1784251-48-4	C₁₀H₁₁F₂NO₂
Ethyl 3-cyano-4-oxopyrrolidine-1-carboxylate	Ethyl 3-cyano-4-oxopyrrolidine-1-carboxylate	分子量：182.18 密度：N/A 沸点：N/A 熔点：N/A	7126-58-1	C₈H₁₀N₂O₃
3-(3-(Amino(phenyl)methyl)-1H-1,2,4-triazol-5-yl)phenol	3-(3-(Amino(phenyl)methyl)-1H-1,2,4-triazol-5-yl)phenol	分子量：266.30 密度：N/A 沸点：N/A 熔点：N/A	1710846-30-2	C₁₅H₁₄N₄O
(3-(Amino(3-methoxyphenyl)methyl)-1H-1,2,4-triazol-5-yl)methanol	(3-(Amino(3-methoxyphenyl)methyl)-1H-1,2,4-triazol-5-yl)methanol	分子量：234.25 密度：N/A 沸点：N/A 熔点：N/A	1713462-21-5	C₁₁H₁₄N₄O₂
(3-Methoxyphenyl)(1-methyl-1H-1,2,4-triazol-3-yl)methanamine	(3-Methoxyphenyl)(1-methyl-1H-1,2,4-triazol-3-yl)methanamine	分子量：218.26 密度：N/A 沸点：N/A 熔点：N/A	1707392-52-6	C₁₁H₁₄N₄O
2-[2-(Bromomethyl)butyl]-4-methyl-1,3-thiazole	2-[2-(Bromomethyl)butyl]-4-methyl-1,3-thiazole	分子量：248.19 密度：N/A 沸点：N/A 熔点：N/A	1507391-47-0	C₉H₁₄BrNS
4,4-Dimethoxy-2-methylbutane-1-amine	4,4-Dimethoxy-2-methylbutane-1-amine	分子量：147.22 密度：N/A 沸点：N/A 熔点：N/A	1334541-20-6	C₇H₁₇NO₂
(5-(3-Fluorophenyl)-1H-1,2,4-triazol-3-yl)(4-methoxyphenyl)methanamine	(5-(3-Fluorophenyl)-1H-1,2,4-triazol-3-yl)(4-methoxyphenyl)methanamine	分子量：298.31 密度：N/A 沸点：N/A 熔点：N/A	1707376-36-0	C₁₆H₁₅FN₄O
(4-Chlorophenyl)(5-ethyl-1H-1,2,4-triazol-3-yl)methanamine	(4-Chlorophenyl)(5-ethyl-1H-1,2,4-triazol-3-yl)methanamine	分子量：236.70 密度：N/A 沸点：N/A 熔点：N/A	1707569-06-9	C₁₁H₁₃ClN₄
(5-(4-(tert-Butyl)phenyl)-1H-1,2,4-triazol-3-yl)(4-chlorophenyl)methanamine	(5-(4-(tert-Butyl)phenyl)-1H-1,2,4-triazol-3-yl)(4-chlorophenyl)methanamine	分子量：340.8 密度：N/A 沸点：N/A 熔点：N/A	1708428-78-7	C₁₉H₂₁ClN₄
2-Bromo-4,5,6-trimethyl-3-pyridinecarbonitrile	2-Bromo-4,5,6-trimethyl-3-pyridinecarbonitrile	分子量：225.08 密度：N/A 沸点：N/A 熔点：N/A	1251761-21-3	C₉H₉BrN₂
(4-Fluorophenyl)(5-((3-nitrophenoxy)methyl)-1H-1,2,4-triazol-3-yl)methanamine	(4-Fluorophenyl)(5-((3-nitrophenoxy)methyl)-1H-1,2,4-triazol-3-yl)methanamine	分子量：343.31 密度：N/A 沸点：N/A 熔点：N/A	1707373-16-7	C₁₆H₁₄FN₅O₃
(1,5-Dimethyl-1H-1,2,4-triazol-3-yl)(3-methoxyphenyl)methanamine	(1,5-Dimethyl-1H-1,2,4-triazol-3-yl)(3-methoxyphenyl)methanamine	分子量：232.28 密度：N/A 沸点：N/A 熔点：N/A	1708080-40-3	C₁₂H₁₆N₄O
1,3,5-Triazine-2,4,6(1H,3H,5H)-trione, zinc salt	1,3,5-Triazine-2,4,6(1H,3H,5H)-trione, zinc salt	分子量：194.5 密度：N/A 沸点：N/A 熔点：N/A	24468-28-8	C₃H₃N₃O₃Zn+₂
(5-Cyclopropyl-1H-1,2,4-triazol-3-yl)(4-fluorophenyl)methanamine	(5-Cyclopropyl-1H-1,2,4-triazol-3-yl)(4-fluorophenyl)methanamine	分子量：232.26 密度：N/A 沸点：N/A 熔点：N/A	1707392-41-3	C₁₂H₁₃FN₄
(4-Fluorophenyl)(5-(m-tolyl)-1H-1,2,4-triazol-3-yl)methanamine	(4-Fluorophenyl)(5-(m-tolyl)-1H-1,2,4-triazol-3-yl)methanamine	分子量：282.32 密度：N/A 沸点：N/A 熔点：N/A	1707394-87-3	C₁₆H₁₅FN₄
(4-Fluorophenyl)(5-(3-fluorophenyl)-1H-1,2,4-triazol-3-yl)methanamine	(4-Fluorophenyl)(5-(3-fluorophenyl)-1H-1,2,4-triazol-3-yl)methanamine	分子量：286.28 密度：N/A 沸点：N/A 熔点：N/A	1710846-26-6	C₁₅H₁₂F₂N₄
(5-((4-(tert-Butyl)phenoxy)methyl)-1H-1,2,4-triazol-3-yl)(4-fluorophenyl)methanamine	(5-((4-(tert-Butyl)phenoxy)methyl)-1H-1,2,4-triazol-3-yl)(4-fluorophenyl)methanamine	分子量：354.4 密度：N/A 沸点：N/A 熔点：N/A	1707373-17-8	C₂₀H₂₃FN₄O
Phenyl(5-(pyridin-3-yl)-1H-1,2,4-triazol-3-yl)methanamine	Phenyl(5-(pyridin-3-yl)-1H-1,2,4-triazol-3-yl)methanamine	分子量：251.29 密度：N/A 沸点：N/A 熔点：N/A	1708081-10-0	C₁₄H₁₃N₅
(3-Methoxyphenyl)(5-(2-methoxyphenyl)-1H-1,2,4-triazol-3-yl)methanamine	(3-Methoxyphenyl)(5-(2-methoxyphenyl)-1H-1,2,4-triazol-3-yl)methanamine	分子量：310.35 密度：N/A 沸点：N/A 熔点：N/A	1710846-43-7	C₁₇H₁₈N₄O₂
(5-(Furan-2-yl)-1H-1,2,4-triazol-3-yl)(4-methoxyphenyl)methanamine	(5-(Furan-2-yl)-1H-1,2,4-triazol-3-yl)(4-methoxyphenyl)methanamine	分子量：270.29 密度：N/A 沸点：N/A 熔点：N/A	1707376-19-9	C₁₄H₁₄N₄O₂
3-Hydroxyazetidine-3-carbonitrile	3-Hydroxyazetidine-3-carbonitrile	分子量：98.10 密度：N/A 沸点：N/A 熔点：N/A	1527935-38-1	C₄H₆N₂O
Benzenemethanamine, 4-fluoro-3,5-dimethyl-N-[2-(trifluoromethoxy)ethyl]-	Benzenemethanamine, 4-fluoro-3,5-dimethyl-N-[2-(trifluoromethoxy)ethyl]-	分子量：265.25 密度：N/A 沸点：N/A 熔点：N/A	1502280-73-0	C₁₂H₁₅F₄NO
(5-(tert-Butyl)-1H-1,2,4-triazol-3-yl)(4-fluorophenyl)methanamine	(5-(tert-Butyl)-1H-1,2,4-triazol-3-yl)(4-fluorophenyl)methanamine	分子量：248.30 密度：N/A 沸点：N/A 熔点：N/A	1707585-74-7	C₁₃H₁₇FN₄
(3-Methoxyphenyl)(5-(o-tolyl)-1H-1,2,4-triazol-3-yl)methanamine	(3-Methoxyphenyl)(5-(o-tolyl)-1H-1,2,4-triazol-3-yl)methanamine	分子量：294.35 密度：N/A 沸点：N/A 熔点：N/A	1707585-87-2	C₁₇H₁₈N₄O