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
butyl 4-[1,1-dioxido-2-(pyrrolidin-1-ylcarbonyl)-4H-1,4-benzothiazin-4-yl]benzoate	butyl 4-[1,1-dioxido-2-(pyrrolidin-1-ylcarbonyl)-4H-1,4-benzothiazin-4-yl]benzoate	分子量：454.5 密度：N/A 沸点：N/A 熔点：N/A	1251568-32-7	C₂₄H₂₆N₂O₅S
1-acetyl-5-bromo-N-(2-chlorobenzyl)indoline-7-sulfonamide	1-acetyl-5-bromo-N-(2-chlorobenzyl)indoline-7-sulfonamide	分子量：372.4 密度：N/A 沸点：N/A 熔点：N/A	1251669-79-0	C₁₉H₁₇FN₂O₃S
[4-(3,4-difluorophenyl)-1,1-dioxido-4H-1,4-benzothiazin-2-yl](pyrrolidin-1-yl)methanone	[4-(3,4-difluorophenyl)-1,1-dioxido-4H-1,4-benzothiazin-2-yl](pyrrolidin-1-yl)methanone	分子量：390.4 密度：N/A 沸点：N/A 熔点：N/A	1251561-49-5	C₁₉H₁₆F₂N₂O₃S
(4-(3,5-difluorophenyl)-1,1-dioxido-4H-benzo[b][1,4]thiazin-2-yl)(pyrrolidin-1-yl)methanone	(4-(3,5-difluorophenyl)-1,1-dioxido-4H-benzo[b][1,4]thiazin-2-yl)(pyrrolidin-1-yl)methanone	分子量：390.4 密度：N/A 沸点：N/A 熔点：N/A	1251698-75-5	C₁₉H₁₆F₂N₂O₃S
4-(3-chlorophenyl)-2-(pyrrolidin-1-ylcarbonyl)-4H-1,4-benzothiazine 1,1-dioxide	4-(3-chlorophenyl)-2-(pyrrolidin-1-ylcarbonyl)-4H-1,4-benzothiazine 1,1-dioxide	分子量：388.9 密度：N/A 沸点：N/A 熔点：N/A	1251597-68-8	C₁₉H₁₇ClN₂O₃S
2-{[4-(4-Fluorophenyl)piperazin-1-yl]carbonyl}indolizine	2-{[4-(4-Fluorophenyl)piperazin-1-yl]carbonyl}indolizine	分子量：388.9 密度：N/A 沸点：N/A 熔点：N/A	1251680-70-2	C₁₉H₁₇ClN₂O₃S
N-(2,4-dimethoxyphenyl)-6-isopropyl-2-methylimidazo[2,1-b][1,3]thiazole-5-sulfonamide	N-(2,4-dimethoxyphenyl)-6-isopropyl-2-methylimidazo[2,1-b][1,3]thiazole-5-sulfonamide	分子量：433.3 密度：N/A 沸点：N/A 熔点：N/A	1251548-68-1	C₁₉H₁₇BrN₂O₃S
[4-(4-bromophenyl)-1,1-dioxido-4H-1,4-benzothiazin-2-yl](pyrrolidin-1-yl)methanone	[4-(4-bromophenyl)-1,1-dioxido-4H-1,4-benzothiazin-2-yl](pyrrolidin-1-yl)methanone	分子量：433.3 密度：N/A 沸点：N/A 熔点：N/A	1251624-24-4	C₁₉H₁₇BrN₂O₃S
(4-(3-chloro-4-fluorophenyl)-1,1-dioxido-4H-benzo[b][1,4]thiazin-2-yl)(pyrrolidin-1-yl)methanone	(4-(3-chloro-4-fluorophenyl)-1,1-dioxido-4H-benzo[b][1,4]thiazin-2-yl)(pyrrolidin-1-yl)methanone	分子量：406.9 密度：N/A 沸点：N/A 熔点：N/A	1251669-88-1	C₁₉H₁₆ClFN₂O₃S
2-(pyrrolidin-1-ylcarbonyl)-4-[3-(trifluoromethoxy)phenyl]-4H-1,4-benzothiazine 1,1-dioxide	2-(pyrrolidin-1-ylcarbonyl)-4-[3-(trifluoromethoxy)phenyl]-4H-1,4-benzothiazine 1,1-dioxide	分子量：438.4 密度：N/A 沸点：N/A 熔点：N/A	1251604-50-8	C₂₀H₁₇F₃N₂O₄S
(4-(3-fluoro-4-methylphenyl)-1,1-dioxido-4H-benzo[b][1,4]thiazin-2-yl)(pyrrolidin-1-yl)methanone	(4-(3-fluoro-4-methylphenyl)-1,1-dioxido-4H-benzo[b][1,4]thiazin-2-yl)(pyrrolidin-1-yl)methanone	分子量：386.4 密度：N/A 沸点：N/A 熔点：N/A	1251672-74-8	C₂₀H₁₉FN₂O₃S
3-[6-(4-fluorophenoxy)pyridazin-3-yl]-N-[(5-methyl-2-furyl)methyl]benzamide	3-[6-(4-fluorophenoxy)pyridazin-3-yl]-N-[(5-methyl-2-furyl)methyl]benzamide	分子量：402.9 密度：N/A 沸点：N/A 熔点：N/A	1251568-34-9	C₂₀H₁₉ClN₂O₃S
(4-(4-fluoro-3-methylphenyl)-1,1-dioxido-4H-benzo[b][1,4]thiazin-2-yl)(pyrrolidin-1-yl)methanone	(4-(4-fluoro-3-methylphenyl)-1,1-dioxido-4H-benzo[b][1,4]thiazin-2-yl)(pyrrolidin-1-yl)methanone	分子量：386.4 密度：N/A 沸点：N/A 熔点：N/A	1251698-82-4	C₂₀H₁₉FN₂O₃S
4-methyl-1-(1-propionyl-4,5-dihydro-1H-imidazol-2-yl)piperidine	4-methyl-1-(1-propionyl-4,5-dihydro-1H-imidazol-2-yl)piperidine	分子量：447.3 密度：N/A 沸点：N/A 熔点：N/A	1251561-58-6	C₂₀H₁₉BrN₂O₃S
{4-[4-chloro-3-(trifluoromethyl)phenyl]-1,1-dioxido-4H-1,4-benzothiazin-2-yl}(pyrrolidin-1-yl)methanone	{4-[4-chloro-3-(trifluoromethyl)phenyl]-1,1-dioxido-4H-1,4-benzothiazin-2-yl}(pyrrolidin-1-yl)methanone	分子量：456.9 密度：N/A 沸点：N/A 熔点：N/A	1251680-78-0	C₂₀H₁₆ClF₃N₂O₃S
4-(4-ethoxyphenyl)-2-(4-methylpiperidine-1-carbonyl)-4H-1lambda6,4-benzothiazine-1,1-dione	4-(4-ethoxyphenyl)-2-(4-methylpiperidine-1-carbonyl)-4H-1lambda6,4-benzothiazine-1,1-dione	分子量：426.5 密度：N/A 沸点：N/A 熔点：N/A	1251669-93-8	C₂₃H₂₆N₂O₄S
N-(3-methylbutyl)-2-[6-oxo-3-(pyrrolidin-1-ylcarbonyl)pyridazin-1(6H)-yl]acetamide	N-(3-methylbutyl)-2-[6-oxo-3-(pyrrolidin-1-ylcarbonyl)pyridazin-1(6H)-yl]acetamide	分子量：400.5 密度：N/A 沸点：N/A 熔点：N/A	1251672-81-7	C₂₁H₂₁FN₂O₃S
[4-(3-bromophenyl)-1,1-dioxido-4H-1,4-benzothiazin-2-yl](4-methylpiperidin-1-yl)methanone	[4-(3-bromophenyl)-1,1-dioxido-4H-1,4-benzothiazin-2-yl](4-methylpiperidin-1-yl)methanone	分子量：461.4 密度：N/A 沸点：N/A 熔点：N/A	1251614-16-0	C₂₁H₂₁BrN₂O₃S
[4-(4-bromophenyl)-1,1-dioxido-4H-1,4-benzothiazin-2-yl](4-methylpiperidin-1-yl)methanone	[4-(4-bromophenyl)-1,1-dioxido-4H-1,4-benzothiazin-2-yl](4-methylpiperidin-1-yl)methanone	分子量：461.4 密度：N/A 沸点：N/A 熔点：N/A	1251691-08-3	C₂₁H₂₁BrN₂O₃S
[4-(3-chloro-4-fluorophenyl)-1,1-dioxido-4H-1,4-benzothiazin-2-yl](4-methylpiperidin-1-yl)methanone	[4-(3-chloro-4-fluorophenyl)-1,1-dioxido-4H-1,4-benzothiazin-2-yl](4-methylpiperidin-1-yl)methanone	分子量：434.9 密度：N/A 沸点：N/A 熔点：N/A	1251568-33-8	C₂₁H₂₀ClFN₂O₃S
{1,1-dioxido-4-[3-(trifluoromethoxy)phenyl]-4H-1,4-benzothiazin-2-yl}(4-methylpiperidin-1-yl)methanone	{1,1-dioxido-4-[3-(trifluoromethoxy)phenyl]-4H-1,4-benzothiazin-2-yl}(4-methylpiperidin-1-yl)methanone	分子量：466.5 密度：N/A 沸点：N/A 熔点：N/A	1251593-04-0	C₂₂H₂₁F₃N₂O₄S
{1,1-dioxido-4-[4-(trifluoromethoxy)phenyl]-4H-1,4-benzothiazin-2-yl}(4-methylpiperidin-1-yl)methanone	{1,1-dioxido-4-[4-(trifluoromethoxy)phenyl]-4H-1,4-benzothiazin-2-yl}(4-methylpiperidin-1-yl)methanone	分子量：466.5 密度：N/A 沸点：N/A 熔点：N/A	1251561-63-3	C₂₂H₂₁F₃N₂O₄S
4-(3-fluoro-4-methylphenyl)-2-[(4-methylpiperidin-1-yl)carbonyl]-4H-1,4-benzothiazine 1,1-dioxide	4-(3-fluoro-4-methylphenyl)-2-[(4-methylpiperidin-1-yl)carbonyl]-4H-1,4-benzothiazine 1,1-dioxide	分子量：414.5 密度：N/A 沸点：N/A 熔点：N/A	1251680-86-0	C₂₂H₂₃FN₂O₃S
N-(4-ethylphenyl)-2-(2-oxo-3-(3-(o-tolyl)-1,2,4-oxadiazol-5-yl)pyridin-1(2H)-yl)acetamide	N-(4-ethylphenyl)-2-(2-oxo-3-(3-(o-tolyl)-1,2,4-oxadiazol-5-yl)pyridin-1(2H)-yl)acetamide	分子量：414.5 密度：N/A 沸点：N/A 熔点：N/A	1251695-96-1	C₂₄H₂₂N₄O₃
5-Aminomethyl-5'-chloro-2,2'-bipyridine	5-Aminomethyl-5'-chloro-2,2'-bipyridine	分子量：219.67 密度：N/A 沸点：N/A 熔点：N/A	1185314-23-1	C₁₁H₁₀ClN₃
4-Cyano-5'-chloro-2,2'-bipyridine	4-Cyano-5'-chloro-2,2'-bipyridine	分子量：215.64 密度：N/A 沸点：N/A 熔点：N/A	1185310-25-1	C₁₁H₆ClN₃
4-Methoxycarbonyl-5'-chloro-2,2'-bipyridine	4-Methoxycarbonyl-5'-chloro-2,2'-bipyridine	分子量：248.66 密度：N/A 沸点：N/A 熔点：N/A	1185314-69-5	C₁₂H₉ClN₂O₂
N-[2-(ethylsulfanyl)phenyl]methanesulfonamide	N-[2-(ethylsulfanyl)phenyl]methanesulfonamide	分子量：231.3 密度：N/A 沸点：N/A 熔点：N/A	4908-09-2	C₉H₁₃NO₂S₂
2-Chloro-4-(5-chloro-2-pyridinyl)pyrimidine	2-Chloro-4-(5-chloro-2-pyridinyl)pyrimidine	分子量：226.06 密度：N/A 沸点：N/A 熔点：N/A	1185310-64-8	C₉H₅Cl₂N₃
4-isobutyl-1-thioxo-1,2-dihydrothieno[2,3-e][1,2,4]triazolo[4,3-a]pyrimidin-5(4H)-one	4-isobutyl-1-thioxo-1,2-dihydrothieno[2,3-e][1,2,4]triazolo[4,3-a]pyrimidin-5(4H)-one	分子量：280.4 密度：N/A 沸点：N/A 熔点：N/A	1031669-44-9	C₁₁H₁₂N₄OS₂
(8-methyl-4-oxo-4,5-dihydro-3H-pyrimido[5,4-b]indol-3-yl)acetic acid	(8-methyl-4-oxo-4,5-dihydro-3H-pyrimido[5,4-b]indol-3-yl)acetic acid	分子量：257.24 密度：N/A 沸点：N/A 熔点：N/A	1031669-77-8	C₁₃H₁₁N₃O₃
2,5'-Dichloro-6-amino-4-(2'-pyridyl)pyrimidine	2,5'-Dichloro-6-amino-4-(2'-pyridyl)pyrimidine	分子量：241.07 密度：N/A 沸点：N/A 熔点：N/A	1185318-19-7	C₉H₆Cl₂N₄
3-(2-phenylethenesulfonamido)-N-[4-(pyrrolidin-1-yl)phenyl]propanamide	3-(2-phenylethenesulfonamido)-N-[4-(pyrrolidin-1-yl)phenyl]propanamide	分子量：399.5 密度：N/A 沸点：N/A 熔点：N/A	949242-66-4	C₂₁H₂₅N₃O₃S
(4-(4-bromo-3-methylphenyl)-1,1-dioxido-4H-benzo[b][1,4]thiazin-2-yl)(4-methylpiperidin-1-yl)methanone	(4-(4-bromo-3-methylphenyl)-1,1-dioxido-4H-benzo[b][1,4]thiazin-2-yl)(4-methylpiperidin-1-yl)methanone	分子量：475.4 密度：N/A 沸点：N/A 熔点：N/A	1251687-00-9	C₂₂H₂₃BrN₂O₃S
(1E)-1-Phenylethanone O-(4-chlorophenyl)oxime	(1E)-1-Phenylethanone O-(4-chlorophenyl)oxime	分子量：245.70 密度：N/A 沸点：N/A 熔点：N/A	946155-92-6	C₁₄H₁₂ClNO
CID 43310139	CID 43310139	分子量：178.27 密度：N/A 沸点：N/A 熔点：N/A	1096283-47-4	C₁₁H₁₈N₂
N-(2,5-dimethoxyphenyl)-2-{3-[3-(2-methylphenyl)-1,2,4-oxadiazol-5-yl]-2-oxo-1,2-dihydropyridin-1-yl}acetamide	N-(2,5-dimethoxyphenyl)-2-{3-[3-(2-methylphenyl)-1,2,4-oxadiazol-5-yl]-2-oxo-1,2-dihydropyridin-1-yl}acetamide	分子量：446.5 密度：N/A 沸点：N/A 熔点：N/A	1251545-49-9	C₂₄H₂₂N₄O₅
N-[(3,4-Dichlorophenyl)sulfonyl]-L-alanine 2-(2-methoxyphenyl)-2-oxoethyl ester	N-[(3,4-Dichlorophenyl)sulfonyl]-L-alanine 2-(2-methoxyphenyl)-2-oxoethyl ester	分子量：446.3 密度：N/A 沸点：N/A 熔点：N/A	1046118-42-6	C₁₈H₁₇Cl₂NO₆S
n-(4-Cyanobenzyl)-3,3,3-trifluoropropanamide	n-(4-Cyanobenzyl)-3,3,3-trifluoropropanamide	分子量：242.20 密度：N/A 沸点：N/A 熔点：N/A	1209145-98-1	C₁₁H₉F₃N₂O
2-{4-[2-(2,3-dihydro-1H-inden-5-yloxy)ethyl]-1-piperazinyl}ethanol	2-{4-[2-(2,3-dihydro-1H-inden-5-yloxy)ethyl]-1-piperazinyl}ethanol	分子量：290.4 密度：N/A 沸点：N/A 熔点：N/A	1158742-27-8	C₁₇H₂₆N₂O₂
N-(5-chloro-2-methoxyphenyl)-2-(2-oxo-3-(3-(o-tolyl)-1,2,4-oxadiazol-5-yl)pyridin-1(2H)-yl)acetamide	N-(5-chloro-2-methoxyphenyl)-2-(2-oxo-3-(3-(o-tolyl)-1,2,4-oxadiazol-5-yl)pyridin-1(2H)-yl)acetamide	分子量：450.9 密度：N/A 沸点：N/A 熔点：N/A	1251633-90-5	C₂₃H₁₉ClN₄O₄
N-(2,4-dimethylphenyl)-2-(2-oxo-3-(3-(o-tolyl)-1,2,4-oxadiazol-5-yl)pyridin-1(2H)-yl)acetamide	N-(2,4-dimethylphenyl)-2-(2-oxo-3-(3-(o-tolyl)-1,2,4-oxadiazol-5-yl)pyridin-1(2H)-yl)acetamide	分子量：414.5 密度：N/A 沸点：N/A 熔点：N/A	1251564-94-9	C₂₄H₂₂N₄O₃
N-(2,3-dimethylphenyl)-2-(2-oxo-3-(3-(o-tolyl)-1,2,4-oxadiazol-5-yl)pyridin-1(2H)-yl)acetamide	N-(2,3-dimethylphenyl)-2-(2-oxo-3-(3-(o-tolyl)-1,2,4-oxadiazol-5-yl)pyridin-1(2H)-yl)acetamide	分子量：414.5 密度：N/A 沸点：N/A 熔点：N/A	1251633-96-1	C₂₄H₂₂N₄O₃
2-{3-[3-(2-methylphenyl)-1,2,4-oxadiazol-5-yl]-2-oxo-1,2-dihydropyridin-1-yl}-N-(2,4,6-trimethylphenyl)acetamide	2-{3-[3-(2-methylphenyl)-1,2,4-oxadiazol-5-yl]-2-oxo-1,2-dihydropyridin-1-yl}-N-(2,4,6-trimethylphenyl)acetamide	分子量：428.5 密度：N/A 沸点：N/A 熔点：N/A	1251629-19-2	C₂₅H₂₄N₄O₃
N-(4-bromo-2-fluorophenyl)-2-(2-oxo-3-(3-(o-tolyl)-1,2,4-oxadiazol-5-yl)pyridin-1(2H)-yl)acetamide	N-(4-bromo-2-fluorophenyl)-2-(2-oxo-3-(3-(o-tolyl)-1,2,4-oxadiazol-5-yl)pyridin-1(2H)-yl)acetamide	分子量：483.3 密度：N/A 沸点：N/A 熔点：N/A	1251545-62-6	C₂₂H₁₆BrFN₄O₃
N-(3-chloro-2-methylphenyl)-2-(2-oxo-3-(3-(o-tolyl)-1,2,4-oxadiazol-5-yl)pyridin-1(2H)-yl)acetamide	N-(3-chloro-2-methylphenyl)-2-(2-oxo-3-(3-(o-tolyl)-1,2,4-oxadiazol-5-yl)pyridin-1(2H)-yl)acetamide	分子量：434.9 密度：N/A 沸点：N/A 熔点：N/A	1251595-94-4	C₂₃H₁₉ClN₄O₃
N-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)-2-(2-oxo-3-(3-(o-tolyl)-1,2,4-oxadiazol-5-yl)pyridin-1(2H)-yl)acetamide	N-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)-2-(2-oxo-3-(3-(o-tolyl)-1,2,4-oxadiazol-5-yl)pyridin-1(2H)-yl)acetamide	分子量：444.4 密度：N/A 沸点：N/A 熔点：N/A	1251696-09-9	C₂₄H₂₀N₄O₅
N-(2-chloro-4-methylphenyl)-2-(2-oxo-3-(3-(o-tolyl)-1,2,4-oxadiazol-5-yl)pyridin-1(2H)-yl)acetamide	N-(2-chloro-4-methylphenyl)-2-(2-oxo-3-(3-(o-tolyl)-1,2,4-oxadiazol-5-yl)pyridin-1(2H)-yl)acetamide	分子量：434.9 密度：N/A 沸点：N/A 熔点：N/A	1251571-04-6	C₂₃H₁₉ClN₄O₃
N-(4-fluoro-2-methylphenyl)-2-[3-[3-(2-methylphenyl)-1,2,4-oxadiazol-5-yl]-2-oxopyridin-1(2H)-yl]acetamide	N-(4-fluoro-2-methylphenyl)-2-[3-[3-(2-methylphenyl)-1,2,4-oxadiazol-5-yl]-2-oxopyridin-1(2H)-yl]acetamide	分子量：418.4 密度：N/A 沸点：N/A 熔点：N/A	1251629-32-9	C₂₃H₁₉FN₄O₃
N-benzyl-2-[3-[3-(2-methylphenyl)-1,2,4-oxadiazol-5-yl]-2-oxopyridin-1(2H)-yl]acetamide	N-benzyl-2-[3-[3-(2-methylphenyl)-1,2,4-oxadiazol-5-yl]-2-oxopyridin-1(2H)-yl]acetamide	分子量：400.4 密度：N/A 沸点：N/A 熔点：N/A	1251564-97-2	C₂₃H₂₀N₄O₃