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
1-(3,4a,5,10b-Tetrahydro-2H-chromeno[4,3-b][1,4]oxazin-4-yl)prop-2-en-1-one	1-(3,4a,5,10b-Tetrahydro-2H-chromeno[4,3-b][1,4]oxazin-4-yl)prop-2-en-1-one	分子量：245.27 密度：N/A 沸点：N/A 熔点：N/A	2361656-97-3	C₁₄H₁₅NO₃
N-(Cyanomethyl)-3-(4-fluorophenyl)-1,2-oxazole-5-carboxamide	N-(Cyanomethyl)-3-(4-fluorophenyl)-1,2-oxazole-5-carboxamide	分子量：245.21 密度：N/A 沸点：N/A 熔点：N/A	2361877-62-3	C₁₂H₈FN₃O₂
N-(Cyanomethyl)-6-methylpyrazolo[1,5-a]pyrimidine-3-carboxamide	N-(Cyanomethyl)-6-methylpyrazolo[1,5-a]pyrimidine-3-carboxamide	分子量：215.21 密度：N/A 沸点：N/A 熔点：N/A	2361720-45-6	C₁₀H₉N₅O
4H,5H,6H,7H-pyrazolo[1,5-a]pyrazin-3-ol dihydrochloride	4H,5H,6H,7H-pyrazolo[1,5-a]pyrazin-3-ol dihydrochloride	分子量：139.16 密度：N/A 沸点：N/A 熔点：N/A	2344679-04-3	C₆H₉N₃O
4,4-Difluoro-2-methyl-1-(prop-2-enoyl)pyrrolidine-2-carboxylic acid	4,4-Difluoro-2-methyl-1-(prop-2-enoyl)pyrrolidine-2-carboxylic acid	分子量：219.18 密度：N/A 沸点：N/A 熔点：N/A	2305564-87-6	C₉H₁₁F₂NO₃
(1-(3-Chlorophenyl)-3-methyl-1H-thieno[2,3-c]pyrazol-5-yl)(3-(2-methoxyphenyl)pyrrolidin-1-yl)methanone	(1-(3-Chlorophenyl)-3-methyl-1H-thieno[2,3-c]pyrazol-5-yl)(3-(2-methoxyphenyl)pyrrolidin-1-yl)methanone	分子量：452.0 密度：N/A 沸点：N/A 熔点：N/A	2305411-97-4	C₂₄H₂₂ClN₃O₂S
(3S,6R)-6-Methyl-4-[(2-methylpropan-2-yl)oxycarbonyl]morpholine-3-carboxylic acid	(3S,6R)-6-Methyl-4-[(2-methylpropan-2-yl)oxycarbonyl]morpholine-3-carboxylic acid	分子量：245.27 密度：N/A 沸点：N/A 熔点：N/A	2361599-13-3	C₁₁H₁₉NO₅
2-Methyl-1-(oxolan-3-yl)butane-1,3-dione	2-Methyl-1-(oxolan-3-yl)butane-1,3-dione	分子量：170.21 密度：N/A 沸点：N/A 熔点：N/A	1862594-67-9	C₉H₁₄O₃
5-(azetidin-3-yl)-2,3-dihydro-1H-pyrazol-3-one	5-(azetidin-3-yl)-2,3-dihydro-1H-pyrazol-3-one	分子量：139.16 密度：N/A 沸点：N/A 熔点：N/A	2245186-94-9	C₆H₉N₃O
Methyl 4-azaspiro[2.4]heptane-7-carboxylate	Methyl 4-azaspiro[2.4]heptane-7-carboxylate	分子量：155.19 密度：N/A 沸点：N/A 熔点：N/A	2344680-69-7	C₈H₁₃NO₂
3-(Acetamidomethyl)-1H-indole-2-carboxylic acid	3-(Acetamidomethyl)-1H-indole-2-carboxylic acid	分子量：232.23 密度：N/A 沸点：N/A 熔点：N/A	2361872-13-9	C₁₂H₁₂N₂O₃
N-[3-(1-Methylpyrazol-4-yl)phenyl]prop-2-enamide	N-[3-(1-Methylpyrazol-4-yl)phenyl]prop-2-enamide	分子量：227.26 密度：N/A 沸点：N/A 熔点：N/A	2361657-88-5	C₁₃H₁₃N₃O
N-[1-(5-Fluoro-1H-indol-3-yl)propan-2-yl]prop-2-enamide	N-[1-(5-Fluoro-1H-indol-3-yl)propan-2-yl]prop-2-enamide	分子量：246.28 密度：N/A 沸点：N/A 熔点：N/A	2361657-22-7	C₁₄H₁₅FN₂O
N-(1,1-Dioxo-9-oxa-1lambda6-thiaspiro[5.5]undecan-4-yl)prop-2-enamide	N-(1,1-Dioxo-9-oxa-1lambda6-thiaspiro[5.5]undecan-4-yl)prop-2-enamide	分子量：273.35 密度：N/A 沸点：N/A 熔点：N/A	2361638-94-8	C₁₂H₁₉NO₄S
N-[[4-(2-Methylimidazol-1-yl)phenyl]methyl]prop-2-enamide	N-[[4-(2-Methylimidazol-1-yl)phenyl]methyl]prop-2-enamide	分子量：241.29 密度：N/A 沸点：N/A 熔点：N/A	2361639-92-9	C₁₄H₁₅N₃O
N-Methyl-N-[1-(1-methylsulfonylcyclopropyl)ethyl]prop-2-enamide	N-Methyl-N-[1-(1-methylsulfonylcyclopropyl)ethyl]prop-2-enamide	分子量：231.31 密度：N/A 沸点：N/A 熔点：N/A	2361641-59-8	C₁₀H₁₇NO₃S
1-[4-[(2,5-Difluorophenyl)methyl]-1,4-diazepan-1-yl]prop-2-en-1-one	1-[4-[(2,5-Difluorophenyl)methyl]-1,4-diazepan-1-yl]prop-2-en-1-one	分子量：280.31 密度：N/A 沸点：N/A 熔点：N/A	2361638-01-7	C₁₅H₁₈F₂N₂O
N-[1-[(3-Methoxyphenyl)methyl]cyclopropyl]prop-2-enamide	N-[1-[(3-Methoxyphenyl)methyl]cyclopropyl]prop-2-enamide	分子量：231.29 密度：N/A 沸点：N/A 熔点：N/A	2361655-95-8	C₁₄H₁₇NO₂
N-[1-Benzyl-3-(hydroxymethyl)piperidin-3-yl]prop-2-enamide	N-[1-Benzyl-3-(hydroxymethyl)piperidin-3-yl]prop-2-enamide	分子量：274.36 密度：N/A 沸点：N/A 熔点：N/A	2361637-86-5	C₁₆H₂₂N₂O₂
N-[2-Hydroxy-1-(3-methoxyphenyl)ethyl]prop-2-enamide	N-[2-Hydroxy-1-(3-methoxyphenyl)ethyl]prop-2-enamide	分子量：221.25 密度：N/A 沸点：N/A 熔点：N/A	2361638-86-8	C₁₂H₁₅NO₃
N-(2,6-Dimethylphenyl)-N-(2-hydroxypropyl)prop-2-enamide	N-(2,6-Dimethylphenyl)-N-(2-hydroxypropyl)prop-2-enamide	分子量：233.31 密度：N/A 沸点：N/A 熔点：N/A	2361656-17-7	C₁₄H₁₉NO₂
N-(2-Cyano-5-methylphenyl)-N-propan-2-ylprop-2-enamide	N-(2-Cyano-5-methylphenyl)-N-propan-2-ylprop-2-enamide	分子量：228.29 密度：N/A 沸点：N/A 熔点：N/A	2361641-63-4	C₁₄H₁₆N₂O
N-(5-Hydroxy-6,7,8,9-tetrahydro-5H-benzo[7]annulen-3-yl)prop-2-enamide	N-(5-Hydroxy-6,7,8,9-tetrahydro-5H-benzo[7]annulen-3-yl)prop-2-enamide	分子量：231.29 密度：N/A 沸点：N/A 熔点：N/A	2361642-37-5	C₁₄H₁₇NO₂
N-[(2-Hydroxy-3,4-dihydro-1H-naphthalen-2-yl)methyl]prop-2-enamide	N-[(2-Hydroxy-3,4-dihydro-1H-naphthalen-2-yl)methyl]prop-2-enamide	分子量：231.29 密度：N/A 沸点：N/A 熔点：N/A	2361642-05-7	C₁₄H₁₇NO₂
N-[[4-(4-Hydroxypiperidin-1-yl)phenyl]methyl]prop-2-enamide	N-[[4-(4-Hydroxypiperidin-1-yl)phenyl]methyl]prop-2-enamide	分子量：260.33 密度：N/A 沸点：N/A 熔点：N/A	2361641-40-7	C₁₅H₂₀N₂O₂
N-[2-(4-Methoxyanilino)-2-oxoethyl]prop-2-enamide	N-[2-(4-Methoxyanilino)-2-oxoethyl]prop-2-enamide	分子量：234.25 密度：N/A 沸点：N/A 熔点：N/A	2361639-19-0	C₁₂H₁₄N₂O₃
2-Methyl-2-(prop-2-enoylamino)-3-pyrazol-1-ylpropanamide	2-Methyl-2-(prop-2-enoylamino)-3-pyrazol-1-ylpropanamide	分子量：222.24 密度：N/A 沸点：N/A 熔点：N/A	2361646-24-2	C₁₀H₁₄N₄O₂
1-[3-(Hydroxymethyl)-3-(trifluoromethyl)pyrrolidin-1-yl]prop-2-en-1-one	1-[3-(Hydroxymethyl)-3-(trifluoromethyl)pyrrolidin-1-yl]prop-2-en-1-one	分子量：223.19 密度：N/A 沸点：N/A 熔点：N/A	2361639-32-7	C₉H₁₂F₃NO₂
1-(4-Hydroxy-4-phenylazepan-1-yl)prop-2-en-1-one	1-(4-Hydroxy-4-phenylazepan-1-yl)prop-2-en-1-one	分子量：245.32 密度：N/A 沸点：N/A 熔点：N/A	2361656-52-0	C₁₅H₁₉NO₂
N-[1-(4-Chlorophenoxy)-2-cyanopropan-2-yl]prop-2-enamide	N-[1-(4-Chlorophenoxy)-2-cyanopropan-2-yl]prop-2-enamide	分子量：264.71 密度：N/A 沸点：N/A 熔点：N/A	2361646-17-3	C₁₃H₁₃ClN₂O₂
1-[3-Hydroxy-2-(2-phenylethyl)piperidin-1-yl]prop-2-en-1-one	1-[3-Hydroxy-2-(2-phenylethyl)piperidin-1-yl]prop-2-en-1-one	分子量：259.34 密度：N/A 沸点：N/A 熔点：N/A	2361642-76-2	C₁₆H₂₁NO₂
N-[(4-fluorophenyl)(1H-imidazol-2-yl)methyl]prop-2-enamide	N-[(4-fluorophenyl)(1H-imidazol-2-yl)methyl]prop-2-enamide	分子量：245.25 密度：N/A 沸点：N/A 熔点：N/A	2361642-43-3	C₁₃H₁₂FN₃O
1-[(3R,4R)-4-Fluoro-3-hydroxypiperidin-1-yl]prop-2-en-1-one	1-[(3R,4R)-4-Fluoro-3-hydroxypiperidin-1-yl]prop-2-en-1-one	分子量：173.18 密度：N/A 沸点：N/A 熔点：N/A	2305452-38-2	C₈H₁₂FNO₂
N-[(3S,4R)-3-Hydroxyoxan-4-yl]prop-2-enamide	N-[(3S,4R)-3-Hydroxyoxan-4-yl]prop-2-enamide	分子量：171.19 密度：N/A 沸点：N/A 熔点：N/A	2305483-51-4	C₈H₁₃NO₃
1-[(2R,6S)-2,6-Bis(hydroxymethyl)piperidin-1-yl]prop-2-en-1-one	1-[(2R,6S)-2,6-Bis(hydroxymethyl)piperidin-1-yl]prop-2-en-1-one	分子量：199.25 密度：N/A 沸点：N/A 熔点：N/A	2305148-65-4	C₁₀H₁₇NO₃
6-(1-Prop-2-enoylpyrrolidin-3-yl)-1H-pyrimidine-2,4-dione	6-(1-Prop-2-enoylpyrrolidin-3-yl)-1H-pyrimidine-2,4-dione	分子量：235.24 密度：N/A 沸点：N/A 熔点：N/A	2305526-37-6	C₁₁H₁₃N₃O₃
1-[(2S,4R)-4-Hydroxy-2-(methoxymethyl)pyrrolidin-1-yl]prop-2-en-1-one	1-[(2S,4R)-4-Hydroxy-2-(methoxymethyl)pyrrolidin-1-yl]prop-2-en-1-one	分子量：185.22 密度：N/A 沸点：N/A 熔点：N/A	2305125-08-8	C₉H₁₅NO₃
N-[[3-(Oxolan-2-yl)-1H-1,2,4-triazol-5-yl]methyl]prop-2-enamide	N-[[3-(Oxolan-2-yl)-1H-1,2,4-triazol-5-yl]methyl]prop-2-enamide	分子量：222.24 密度：N/A 沸点：N/A 熔点：N/A	2305560-71-6	C₁₀H₁₄N₄O₂
N-[(1-Ethyl-2,4-dioxopyrimidin-5-yl)methyl]prop-2-enamide	N-[(1-Ethyl-2,4-dioxopyrimidin-5-yl)methyl]prop-2-enamide	分子量：223.23 密度：N/A 沸点：N/A 熔点：N/A	2305452-53-1	C₁₀H₁₃N₃O₃
1-[(3As,6R,6aR)-6-hydroxy-3,3a,4,5,6,6a-hexahydro-2H-cyclopenta[b]pyrrol-1-yl]prop-2-en-1-one	1-[(3As,6R,6aR)-6-hydroxy-3,3a,4,5,6,6a-hexahydro-2H-cyclopenta[b]pyrrol-1-yl]prop-2-en-1-one	分子量：181.23 密度：N/A 沸点：N/A 熔点：N/A	2305289-07-8	C₁₀H₁₅NO₂
N-(3-Fluoro-4-methylphenyl)-N-(oxan-4-yl)prop-2-enamide	N-(3-Fluoro-4-methylphenyl)-N-(oxan-4-yl)prop-2-enamide	分子量：263.31 密度：N/A 沸点：N/A 熔点：N/A	2305526-47-8	C₁₅H₁₈FNO₂
N-[(6-Tert-butyl-2-oxo-1H-pyridin-3-yl)methyl]prop-2-enamide	N-[(6-Tert-butyl-2-oxo-1H-pyridin-3-yl)methyl]prop-2-enamide	分子量：234.29 密度：N/A 沸点：N/A 熔点：N/A	2305414-71-3	C₁₃H₁₈N₂O₂
CID 139015469	CID 139015469	分子量：209.28 密度：N/A 沸点：N/A 熔点：N/A	2361655-76-5	C₁₂H₁₉NO₂
1-[2-(Hydroxymethyl)-2-methyl-3H-1,4-benzoxazin-4-yl]prop-2-en-1-one	1-[2-(Hydroxymethyl)-2-methyl-3H-1,4-benzoxazin-4-yl]prop-2-en-1-one	分子量：233.26 密度：N/A 沸点：N/A 熔点：N/A	2305386-42-7	C₁₃H₁₅NO₃
N-[2-(1,1-Difluoroethyl)-4-fluorophenyl]prop-2-enamide	N-[2-(1,1-Difluoroethyl)-4-fluorophenyl]prop-2-enamide	分子量：229.20 密度：N/A 沸点：N/A 熔点：N/A	2361645-85-2	C₁₁H₁₀F₃NO
N-[3-[[(1-Oxothiolan-1-ylidene)amino]methyl]phenyl]prop-2-enamide	N-[3-[[(1-Oxothiolan-1-ylidene)amino]methyl]phenyl]prop-2-enamide	分子量：278.37 密度：N/A 沸点：N/A 熔点：N/A	2305483-89-8	C₁₄H₁₈N₂O₂S
N-[2-(Triazol-2-yl)phenyl]prop-2-enamide	N-[2-(Triazol-2-yl)phenyl]prop-2-enamide	分子量：214.22 密度：N/A 沸点：N/A 熔点：N/A	2305526-50-3	C₁₁H₁₀N₄O
N-[1-(1,2,4-Oxadiazol-3-yl)cyclopropyl]prop-2-enamide	N-[1-(1,2,4-Oxadiazol-3-yl)cyclopropyl]prop-2-enamide	分子量：179.18 密度：N/A 沸点：N/A 熔点：N/A	2305386-51-8	C₈H₉N₃O₂
1-[2-Methyl-7-(trifluoromethyl)-2,3-dihydro-1,4-benzoxazin-4-yl]prop-2-en-1-one	1-[2-Methyl-7-(trifluoromethyl)-2,3-dihydro-1,4-benzoxazin-4-yl]prop-2-en-1-one	分子量：271.23 密度：N/A 沸点：N/A 熔点：N/A	2361655-82-3	C₁₃H₁₂F₃NO₂
1-Spiro[3H-1,4-benzoxazine-2,4'-oxane]-4-ylprop-2-en-1-one	1-Spiro[3H-1,4-benzoxazine-2,4'-oxane]-4-ylprop-2-en-1-one	分子量：259.30 密度：N/A 沸点：N/A 熔点：N/A	2305526-56-9	C₁₅H₁₇NO₃