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
6-Tert-butyl-thieno[2,3-b]quinoline-2-carboxylic acid amide	6-Tert-butyl-thieno[2,3-b]quinoline-2-carboxylic acid amide	分子量：284.4 密度：N/A 沸点：N/A 熔点：N/A	910452-86-7	C₁₆H₁₆N₂OS
N-[3-(3,4-difluorophenyl)-1,2-oxazol-5-yl]-2-(2-fluorophenoxy)butanamide	N-[3-(3,4-difluorophenyl)-1,2-oxazol-5-yl]-2-(2-fluorophenoxy)butanamide	分子量：376.3 密度：N/A 沸点：N/A 熔点：N/A	879767-52-9	C₁₉H₁₅F₃N₂O₃
N-[3-(benzylcarbamoyl)-4,5,6,7-tetrahydro-1-benzothiophen-2-yl]-4-methyl-1,2,3-thiadiazole-5-carboxamide	N-[3-(benzylcarbamoyl)-4,5,6,7-tetrahydro-1-benzothiophen-2-yl]-4-methyl-1,2,3-thiadiazole-5-carboxamide	分子量：412.5 密度：N/A 沸点：N/A 熔点：N/A	898629-49-7	C₂₀H₂₀N₄O₂S₂
1-(3-chlorophenyl)-4-oxo-N-[4-(piperidin-1-ylsulfonyl)phenyl]-1,4-dihydropyridazine-3-carboxamide	1-(3-chlorophenyl)-4-oxo-N-[4-(piperidin-1-ylsulfonyl)phenyl]-1,4-dihydropyridazine-3-carboxamide	分子量：472.9 密度：N/A 沸点：N/A 熔点：N/A	898630-03-0	C₂₂H₂₁ClN₄O₄S
N-allyl-N'-benzoyl-urea	N-allyl-N'-benzoyl-urea	分子量：204.22 密度：N/A 沸点：N/A 熔点：N/A	115475-68-8	C₁₁H₁₂N₂O₂
1-(3-Thienyl)-3-(methylamino)propyl 1-naphthyl ether	1-(3-Thienyl)-3-(methylamino)propyl 1-naphthyl ether	分子量：297.4 密度：N/A 沸点：N/A 熔点：N/A	116817-27-7	C₁₈H₁₉NOS
4-ethoxy-N-{4-[4-(propan-2-yloxy)phenyl]-1,2,5-oxadiazol-3-yl}benzamide	4-ethoxy-N-{4-[4-(propan-2-yloxy)phenyl]-1,2,5-oxadiazol-3-yl}benzamide	分子量：367.4 密度：N/A 沸点：N/A 熔点：N/A	898606-66-1	C₂₀H₂₁N₃O₄
N-[(5-bromofuran-2-yl)methyl]-N-(1,1-dioxidotetrahydrothiophen-3-yl)-4-ethoxybenzamide	N-[(5-bromofuran-2-yl)methyl]-N-(1,1-dioxidotetrahydrothiophen-3-yl)-4-ethoxybenzamide	分子量：442.3 密度：N/A 沸点：N/A 熔点：N/A	898606-73-0	C₁₈H₂₀BrNO₅S
N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-{[5-(4-fluorophenyl)furan-2-yl]methyl}benzamide	N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-{[5-(4-fluorophenyl)furan-2-yl]methyl}benzamide	分子量：413.5 密度：N/A 沸点：N/A 熔点：N/A	879590-09-7	C₂₂H₂₀FNO₄S
N-[(5-bromofuran-2-yl)methyl]-2-butoxy-N-(1,1-dioxidotetrahydrothiophen-3-yl)benzamide	N-[(5-bromofuran-2-yl)methyl]-2-butoxy-N-(1,1-dioxidotetrahydrothiophen-3-yl)benzamide	分子量：470.4 密度：N/A 沸点：N/A 熔点：N/A	898623-07-9	C₂₀H₂₄BrNO₅S
ethyl 2-{[(4-methyl-1,2,3-thiadiazol-5-yl)carbonyl]amino}-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carboxylate	ethyl 2-{[(4-methyl-1,2,3-thiadiazol-5-yl)carbonyl]amino}-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carboxylate	分子量：337.4 密度：N/A 沸点：N/A 熔点：N/A	898610-78-1	C₁₄H₁₅N₃O₃S₂
N-[4-(4-butoxyphenyl)-1,2,5-oxadiazol-3-yl]-4-methoxybenzamide	N-[4-(4-butoxyphenyl)-1,2,5-oxadiazol-3-yl]-4-methoxybenzamide	分子量：367.4 密度：N/A 沸点：N/A 熔点：N/A	898611-13-7	C₂₀H₂₁N₃O₄
Enalapril hydrochloride	Enalapril hydrochloride	分子量：412.9 密度：N/A 沸点：N/A 熔点：N/A	138332-08-8	C₂₀H₂₉ClN₂O₅
N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-{[5-(4-fluorophenyl)furan-2-yl]methyl}-3-methyl-1-benzofuran-2-carboxamide	N-(1,1-dioxidotetrahydrothiophen-3-yl)-N-{[5-(4-fluorophenyl)furan-2-yl]methyl}-3-methyl-1-benzofuran-2-carboxamide	分子量：467.5 密度：N/A 沸点：N/A 熔点：N/A	879574-74-0	C₂₅H₂₂FNO₅S
N-{5-[(2-fluorobenzyl)sulfanyl]-1,3,4-thiadiazol-2-yl}-4-oxo-1-phenyl-1,4-dihydropyridazine-3-carboxamide	N-{5-[(2-fluorobenzyl)sulfanyl]-1,3,4-thiadiazol-2-yl}-4-oxo-1-phenyl-1,4-dihydropyridazine-3-carboxamide	分子量：439.5 密度：N/A 沸点：N/A 熔点：N/A	892625-20-6	C₂₀H₁₄FN₅O₂S₂
1-(4-chlorophenyl)-N-(4-fluorophenyl)-4-oxo-1,4-dihydropyridazine-3-carboxamide	1-(4-chlorophenyl)-N-(4-fluorophenyl)-4-oxo-1,4-dihydropyridazine-3-carboxamide	分子量：343.7 密度：N/A 沸点：N/A 熔点：N/A	898615-78-6	C₁₇H₁₁ClFN₃O₂
N-(4-bromophenyl)-1-(4-chlorophenyl)-4-oxo-1,4-dihydropyridazine-3-carboxamide	N-(4-bromophenyl)-1-(4-chlorophenyl)-4-oxo-1,4-dihydropyridazine-3-carboxamide	分子量：404.6 密度：N/A 沸点：N/A 熔点：N/A	898615-80-0	C₁₇H₁₁BrClN₃O₂
2-Amino-4-(1,3-dioxolan-2-yl)butanoic acid	2-Amino-4-(1,3-dioxolan-2-yl)butanoic acid	分子量：175.18 密度：N/A 沸点：N/A 熔点：N/A	83240-68-0	C₇H₁₃NO₄
3'-Fluoro-5'-(4,4,5,5-tetramethyl[1,3,2]dioxaborolan-2-yl)biphenyl-2-carbonitrile	3'-Fluoro-5'-(4,4,5,5-tetramethyl[1,3,2]dioxaborolan-2-yl)biphenyl-2-carbonitrile	分子量：323.2 密度：N/A 沸点：N/A 熔点：N/A	462652-02-4	C₁₉H₁₉BFNO₂
Tert-butyl 2-(piperidin-3-ylmethoxy)acetate	Tert-butyl 2-(piperidin-3-ylmethoxy)acetate	分子量：229.32 密度：N/A 沸点：N/A 熔点：N/A	146118-56-1	C₁₂H₂₃NO₃
1-{4-[Bis(4-fluorophenyl)methyl]piperazin-1-yl}-2-(3,5-dimethyl-1,2-oxazol-4-yl)ethanone	1-{4-[Bis(4-fluorophenyl)methyl]piperazin-1-yl}-2-(3,5-dimethyl-1,2-oxazol-4-yl)ethanone	分子量：425.5 密度：N/A 沸点：N/A 熔点：N/A	919874-94-5	C₂₄H₂₅F₂N₃O₂
Ethyl 5-hydroxy-3-methyl-1-phenylpyrazole-4-carboxylate	Ethyl 5-hydroxy-3-methyl-1-phenylpyrazole-4-carboxylate	分子量：246.26 密度：N/A 沸点：N/A 熔点：N/A	21272-30-0	C₁₃H₁₄N₂O₃
[2-(2,2-Dimethylpropanoylamino)-3-methoxyphenyl]boronic acid	[2-(2,2-Dimethylpropanoylamino)-3-methoxyphenyl]boronic acid	分子量：251.09 密度：N/A 沸点：N/A 熔点：N/A	170959-23-6	C₁₂H₁₈BNO₄
(S)-ethyl 4-((tert-butoxycarbonyl)amino)-3-oxopentanoate	(S)-ethyl 4-((tert-butoxycarbonyl)amino)-3-oxopentanoate	分子量：259.30 密度：N/A 沸点：N/A 熔点：N/A	69619-23-4	C₁₂H₂₁NO₅
4,5-dimethyl-1H-imidazole-2-carbonitrile	4,5-dimethyl-1H-imidazole-2-carbonitrile	分子量：121.14 密度：N/A 沸点：N/A 熔点：N/A	1238058-12-2	C₆H₇N₃
10-[[13-(dimethylamino)-12,14-dioxa-13-phosphapentacyclo[13.8.0.02,11.03,8.018,23]tricosa-1(15),2(11),3,5,7,9,16,18,20,22-decaen-10-yl]methoxymethyl]-N,N-dimethyl-12,14-dioxa-13-phosphapentacyclo[13.8.0.02,11.03,8.018,23]tricosa-1(15),2(11),3,5,7,9,16,18,20,22-decaen-13-amine	10-[[13-(dimethylamino)-12,14-dioxa-13-phosphapentacyclo[13.8.0.02,11.03,8.018,23]tricosa-1(15),2(11),3,5,7,9,16,18,20,22-decaen-10-yl]methoxymethyl]-N,N-dimethyl-12,14-dioxa-13-phosphapentacyclo[13.8.0.02,11.03,8.018,23]tricosa-1(15),2(11),3,5,7,9,16,18,20,22-decaen-13-amine	分子量：760.7 密度：N/A 沸点：N/A 熔点：N/A	869492-11-5	C₄₆H₃₈N₂O₅P₂
Ethyl 1-(4-chlorophenyl)-1H-imidazole-4-carboxylate	Ethyl 1-(4-chlorophenyl)-1H-imidazole-4-carboxylate	分子量：250.68 密度：N/A 沸点：N/A 熔点：N/A	114067-92-4	C₁₂H₁₁ClN₂O₂
1-(3-Chloro-2-methylpropyl)-4-(3-chlorophenyl)piperazine	1-(3-Chloro-2-methylpropyl)-4-(3-chlorophenyl)piperazine	分子量：287.2 密度：N/A 沸点：N/A 熔点：N/A	151447-87-9	C₁₄H₂₀Cl₂N₂
Ethyl(2-fluoroethyl)amine	Ethyl(2-fluoroethyl)amine	分子量：91.13 密度：N/A 沸点：N/A 熔点：N/A	104165-40-4	C₄H₁₀FN
Methyl 4-bromo-2,5-bis(trifluoromethyl)benzoate	Methyl 4-bromo-2,5-bis(trifluoromethyl)benzoate	分子量：351.04 密度：N/A 沸点：N/A 熔点：N/A	1260793-79-0	C₁₀H₅BrF₆O₂
(1R,6S)-6-({[2-({[(1S,6R)-6-carboxy-3-cyclohexenyl]carbonyl}amino)ethyl]amino}carbonyl)-3-cyclohexene-1-carboxylic acid	(1R,6S)-6-({[2-({[(1S,6R)-6-carboxy-3-cyclohexenyl]carbonyl}amino)ethyl]amino}carbonyl)-3-cyclohexene-1-carboxylic acid	分子量：364.4 密度：N/A 沸点：N/A 熔点：N/A	415973-33-0	C₁₈H₂₄N₂O₆
(1R,5R)-N-(4-Bromophenyl)-1,5,6,8-tetrahydro-8-oxo-1,5-methano-2H-pyrido[1,2-a][1,5]diazocine-3(4H)-carbothioamide	(1R,5R)-N-(4-Bromophenyl)-1,5,6,8-tetrahydro-8-oxo-1,5-methano-2H-pyrido[1,2-a][1,5]diazocine-3(4H)-carbothioamide	分子量：404.3 密度：N/A 沸点：N/A 熔点：N/A	26003-16-7	C₁₈H₁₈BrN₃OS
rac-(1R,3R,4S)-2-azabicyclo[2.2.1]heptane-3-carboxylic acid	rac-(1R,3R,4S)-2-azabicyclo[2.2.1]heptane-3-carboxylic acid	分子量：141.17 密度：N/A 沸点：N/A 熔点：N/A	134877-61-5	C₇H₁₁NO₂
1-(3-Methoxyphenyl)-1-heptyne	1-(3-Methoxyphenyl)-1-heptyne	分子量：202.29 密度：N/A 沸点：N/A 熔点：N/A	118476-15-6	C₁₄H₁₈O
CID 11883968	CID 11883968	分子量：259.26 密度：N/A 沸点：N/A 熔点：N/A	1415811-74-3	C₁₄H₁₃NO₄
(I(2)S)-I(2)-Bromobenzeneethanol	(I(2)S)-I(2)-Bromobenzeneethanol	分子量：201.06 密度：N/A 沸点：N/A 熔点：N/A	204516-35-8	C₈H₉BrO
Methyl 4-(formyloxy)benzoate	Methyl 4-(formyloxy)benzoate	分子量：180.16 密度：N/A 沸点：N/A 熔点：N/A	3981-70-2	C₉H₈O₄
2-(5-Chloro-2-pyridyloxy)ethanenitrile	2-(5-Chloro-2-pyridyloxy)ethanenitrile	分子量：168.58 密度：N/A 沸点：N/A 熔点：N/A	643014-41-9	C₇H₅ClN₂O
1-(Iodomethyl)-3-methylbenzene	1-(Iodomethyl)-3-methylbenzene	分子量：232.06 密度：N/A 沸点：N/A 熔点：N/A	35509-94-5	C₈H₉I
1-Chloro-3-(1,2,3,4-tetrahydroisoquinolin-2-yl)propan-2-ol	1-Chloro-3-(1,2,3,4-tetrahydroisoquinolin-2-yl)propan-2-ol	分子量：225.71 密度：N/A 沸点：N/A 熔点：N/A	66611-36-7	C₁₂H₁₆ClNO
4,6-Dichloro-2-(1,1-dimethylethylamino)pyrimidine	4,6-Dichloro-2-(1,1-dimethylethylamino)pyrimidine	分子量：220.10 密度：N/A 沸点：N/A 熔点：N/A	72063-76-4	C₈H₁₁Cl₂N₃
2-cyano-3-(2,5-dimethyl-1-propyl-1H-pyrrol-3-yl)-N-[4-(3-fluoro-4-methoxyphenyl)-1,3-thiazol-2-yl]prop-2-enamide	2-cyano-3-(2,5-dimethyl-1-propyl-1H-pyrrol-3-yl)-N-[4-(3-fluoro-4-methoxyphenyl)-1,3-thiazol-2-yl]prop-2-enamide	分子量：438.5 密度：N/A 沸点：N/A 熔点：N/A	939688-79-6	C₂₃H₂₃FN₄O₂S
4-methoxy-N-[(1Z)-3-oxo-3-[(2-phenylethyl)amino]-1-{5-[3-(trifluoromethyl)phenyl]furan-2-yl}prop-1-en-2-yl]benzamide	4-methoxy-N-[(1Z)-3-oxo-3-[(2-phenylethyl)amino]-1-{5-[3-(trifluoromethyl)phenyl]furan-2-yl}prop-1-en-2-yl]benzamide	分子量：534.5 密度：N/A 沸点：N/A 熔点：N/A	385390-60-3	C₃₀H₂₅F₃N₂O₄
(2R,6S)-1-[(benzyloxy)carbonyl]-2,6-piperidinedicarboxylic acid	(2R,6S)-1-[(benzyloxy)carbonyl]-2,6-piperidinedicarboxylic acid	分子量：307.30 密度：N/A 沸点：N/A 熔点：N/A	59234-43-4	C₁₅H₁₇NO₆
(S)-2-((tert-Butoxycarbonyl)amino)-3-mesitylpropanoic acid	(S)-2-((tert-Butoxycarbonyl)amino)-3-mesitylpropanoic acid	分子量：307.4 密度：N/A 沸点：N/A 熔点：N/A	287929-71-9	C₁₇H₂₅NO₄
N-[(1Z)-3-[(furan-2-ylmethyl)amino]-3-oxo-1-{5-[3-(trifluoromethyl)phenyl]furan-2-yl}prop-1-en-2-yl]benzamide	N-[(1Z)-3-[(furan-2-ylmethyl)amino]-3-oxo-1-{5-[3-(trifluoromethyl)phenyl]furan-2-yl}prop-1-en-2-yl]benzamide	分子量：480.4 密度：N/A 沸点：N/A 熔点：N/A	385418-59-7	C₂₆H₁₉F₃N₂O₄
N-{(1Z)-1-[5-(3-chlorophenyl)furan-2-yl]-3-[(2-hydroxyethyl)amino]-3-oxoprop-1-en-2-yl}-4-methoxybenzamide	N-{(1Z)-1-[5-(3-chlorophenyl)furan-2-yl]-3-[(2-hydroxyethyl)amino]-3-oxoprop-1-en-2-yl}-4-methoxybenzamide	分子量：440.9 密度：N/A 沸点：N/A 熔点：N/A	385419-66-9	C₂₃H₂₁ClN₂O₅
2,5-Dioxo-1-pyrrolidinyl 4-(2-pyridinylthio)pentanoate	2,5-Dioxo-1-pyrrolidinyl 4-(2-pyridinylthio)pentanoate	分子量：308.35 密度：N/A 沸点：N/A 熔点：N/A	851631-97-5	C₁₄H₁₆N₂O₄S
1-(2-Hydroxy-3-((3S,4R)-3-hydroxy-1-methylpiperidin-4-yl)-4,6-dimethoxyphenyl)ethan-1-one	1-(2-Hydroxy-3-((3S,4R)-3-hydroxy-1-methylpiperidin-4-yl)-4,6-dimethoxyphenyl)ethan-1-one	分子量：309.36 密度：N/A 沸点：N/A 熔点：N/A	113225-21-1	C₁₆H₂₃NO₅
ethyl (2S)-2-[(2S)-2-amino-4-methylpentanamido]propanoate	ethyl (2S)-2-[(2S)-2-amino-4-methylpentanamido]propanoate	分子量：230.30 密度：N/A 沸点：N/A 熔点：N/A	58455-27-9	C₁₁H₂₂N₂O₃