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-Methyl-5,6,7,8-tetrahydroimidazo[1,2-c]pyrimidine	2-Methyl-5,6,7,8-tetrahydroimidazo[1,2-c]pyrimidine	分子量：137.18 密度：N/A 沸点：N/A 熔点：N/A	1338064-10-0	C₇H₁₁N₃
1-(5-Iodo-2-(trifluoromethylthio)phenyl)hydrazine	1-(5-Iodo-2-(trifluoromethylthio)phenyl)hydrazine	分子量：334.10 密度：N/A 沸点：N/A 熔点：N/A	1805714-88-8	C₇H₆F₃IN₂S
2-(2,6-Dimethylpyridin-4-yl)quinoline	2-(2,6-Dimethylpyridin-4-yl)quinoline	分子量：234.29 密度：N/A 沸点：N/A 熔点：N/A	850622-06-9	C₁₆H₁₄N₂
(R)-Ethyl 3-amino-4,4-dimethylpentanoate	(R)-Ethyl 3-amino-4,4-dimethylpentanoate	分子量：173.25 密度：N/A 沸点：N/A 熔点：N/A	179320-83-3	C₉H₁₉NO₂
2-(Pyridin-4-yl)-2,6-diazaspiro[3.3]heptane	2-(Pyridin-4-yl)-2,6-diazaspiro[3.3]heptane	分子量：175.23 密度：N/A 沸点：N/A 熔点：N/A	1256821-63-2	C₁₀H₁₃N₃
Ethyl 3-methyl-1,2,3,4-tetrahydroisoquinoline-3-carboxylate	Ethyl 3-methyl-1,2,3,4-tetrahydroisoquinoline-3-carboxylate	分子量：219.28 密度：N/A 沸点：N/A 熔点：N/A	92040-93-2	C₁₃H₁₇NO₂
5,6-Dichloropyrimidine-4-carbaldehyde	5,6-Dichloropyrimidine-4-carbaldehyde	分子量：176.99 密度：N/A 沸点：N/A 熔点：N/A	1806317-35-0	C₅H₂Cl₂N₂O
5-Bromo-3-chloropyrazolo[1,5-a]pyridine-2-carboxylic acid	5-Bromo-3-chloropyrazolo[1,5-a]pyridine-2-carboxylic acid	分子量：275.48 密度：N/A 沸点：N/A 熔点：N/A	1379333-87-5	C₈H₄BrClN₂O₂
5,5-Dimethyl-1-(piperidin-4-yl)imidazolidin-2-one	5,5-Dimethyl-1-(piperidin-4-yl)imidazolidin-2-one	分子量：197.28 密度：N/A 沸点：N/A 熔点：N/A	1426139-18-5	C₁₀H₁₉N₃O
Ethyl 4-bromo-3-chloroquinoline-2-carboxylate	Ethyl 4-bromo-3-chloroquinoline-2-carboxylate	分子量：314.56 密度：N/A 沸点：N/A 熔点：N/A	1203579-34-3	C₁₂H₉BrClNO₂
(6-Bromo-5-chloropyridin-3-yl)methanol	(6-Bromo-5-chloropyridin-3-yl)methanol	分子量：222.47 密度：N/A 沸点：N/A 熔点：N/A	951652-94-1	C₆H₅BrClNO
Isopropyl 4-(furan-2-yl)-2-methylbenzo[4,5]imidazo[1,2-a]pyrimidine-3-carboxylate	Isopropyl 4-(furan-2-yl)-2-methylbenzo[4,5]imidazo[1,2-a]pyrimidine-3-carboxylate	分子量：335.4 密度：N/A 沸点：N/A 熔点：N/A	1956327-27-7	C₁₉H₁₇N₃O₃
2-Chloro-4-(1H-pyrazol-4-yl)pyridine	2-Chloro-4-(1H-pyrazol-4-yl)pyridine	分子量：179.60 密度：N/A 沸点：N/A 熔点：N/A	1935917-44-4	C₈H₆ClN₃
8-Ethynyl-6,9-diazaspiro[4.5]decan-7-one	8-Ethynyl-6,9-diazaspiro[4.5]decan-7-one	分子量：178.23 密度：N/A 沸点：N/A 熔点：N/A	1956307-00-8	C₁₀H₁₄N₂O
Ethyl 3-(3-(hydroxymethyl)-5-methyl-4H-1,2,4-triazol-4-yl)benzoate	Ethyl 3-(3-(hydroxymethyl)-5-methyl-4H-1,2,4-triazol-4-yl)benzoate	分子量：261.28 密度：N/A 沸点：N/A 熔点：N/A	1956386-39-2	C₁₃H₁₅N₃O₃
2-((1R)-1-Aminoethyl)-4-fluoro-1-(methylsulfonyl)benzene	2-((1R)-1-Aminoethyl)-4-fluoro-1-(methylsulfonyl)benzene	分子量：217.26 密度：N/A 沸点：N/A 熔点：N/A	1213416-36-4	C₉H₁₂FNO₂S
3-Methoxy-2-nitro-9H-fluoren-9-one	3-Methoxy-2-nitro-9H-fluoren-9-one	分子量：255.22 密度：N/A 沸点：N/A 熔点：N/A	106594-99-4	C₁₄H₉NO₄
N-Cyclopentyl-1-(pyrido[2,3-b]pyrazin-7-yl)piperidine-3-carboxamide	N-Cyclopentyl-1-(pyrido[2,3-b]pyrazin-7-yl)piperidine-3-carboxamide	分子量：325.4 密度：N/A 沸点：N/A 熔点：N/A	1357993-51-1	C₁₈H₂₃N₅O
5-Amino-1-((3aS,4R,6S,6aR)-6-(2-hydroxyethoxy)-2,2-dimethyltetrahydro-3aH-cyclopenta[d][1,3]dioxol-4-yl)-1H-1,2,3-triazole-4-carboxamide	5-Amino-1-((3aS,4R,6S,6aR)-6-(2-hydroxyethoxy)-2,2-dimethyltetrahydro-3aH-cyclopenta[d][1,3]dioxol-4-yl)-1H-1,2,3-triazole-4-carboxamide	分子量：327.34 密度：N/A 沸点：N/A 熔点：N/A	1456538-52-5	C₁₃H₂₁N₅O₅
6,7-Dihydro-5H-pyrrolo[1,2-c]imidazol-6-ol	6,7-Dihydro-5H-pyrrolo[1,2-c]imidazol-6-ol	分子量：124.14 密度：N/A 沸点：N/A 熔点：N/A	1824408-04-9	C₆H₈N₂O
Ethyl 2-(6-chloro-2-fluoropyridin-3-yl)acetate	Ethyl 2-(6-chloro-2-fluoropyridin-3-yl)acetate	分子量：217.62 密度：N/A 沸点：N/A 熔点：N/A	1805955-11-6	C₉H₉ClFNO₂
Ethyl-3-(3-benzyloxyphenyl)-2-ethoxy-propanoate	Ethyl-3-(3-benzyloxyphenyl)-2-ethoxy-propanoate	分子量：328.4 密度：N/A 沸点：N/A 熔点：N/A	251978-01-5	C₂₀H₂₄O₄
(2S,3S)-2-((R)-3-((tert-butoxycarbonyl)amino)-2-oxopyrrolidin-1-yl)-3-methylpentanoic acid	(2S,3S)-2-((R)-3-((tert-butoxycarbonyl)amino)-2-oxopyrrolidin-1-yl)-3-methylpentanoic acid	分子量：314.38 密度：N/A 沸点：N/A 熔点：N/A	301840-23-3	C₁₅H₂₆N₂O₅
Cyclopenta-2,4-dien-1-yldimethyl(3-phenyl-1H-inden-1-yl)silane	Cyclopenta-2,4-dien-1-yldimethyl(3-phenyl-1H-inden-1-yl)silane	分子量：314.5 密度：N/A 沸点：N/A 熔点：N/A	948573-96-4	C₂₂H₂₂Si
tert-Butyl 3-amino-2-benzylazetidine-1-carboxylate	tert-Butyl 3-amino-2-benzylazetidine-1-carboxylate	分子量：262.35 密度：N/A 沸点：N/A 熔点：N/A	1368039-36-4	C₁₅H₂₂N₂O₂
(6-(Trifluoromethoxy)pyridin-2-yl)methanamine	(6-(Trifluoromethoxy)pyridin-2-yl)methanamine	分子量：192.14 密度：N/A 沸点：N/A 熔点：N/A	1361824-89-6	C₇H₇F₃N₂O
(2-(Trifluoromethoxy)pyridin-4-yl)methanamine	(2-(Trifluoromethoxy)pyridin-4-yl)methanamine	分子量：192.14 密度：N/A 沸点：N/A 熔点：N/A	1361696-54-9	C₇H₇F₃N₂O
5,6-Difluoro-7-methoxy-3,4-dihydronaphthalen-1(2H)-one	5,6-Difluoro-7-methoxy-3,4-dihydronaphthalen-1(2H)-one	分子量：212.19 密度：N/A 沸点：N/A 熔点：N/A	1273596-93-2	C₁₁H₁₀F₂O₂
2-Methyl-3-(1,2,3,4-tetrahydronaphthalen-2-yl)prop-1-en-1-yl acetate	2-Methyl-3-(1,2,3,4-tetrahydronaphthalen-2-yl)prop-1-en-1-yl acetate	分子量：244.33 密度：N/A 沸点：N/A 熔点：N/A	6884-39-5	C₁₆H₂₀O₂
3-(7-Acetamido-8-hydroxyquinolin-5-yl)propanoic acid	3-(7-Acetamido-8-hydroxyquinolin-5-yl)propanoic acid	分子量：274.27 密度：N/A 沸点：N/A 熔点：N/A	1248550-23-3	C₁₄H₁₄N₂O₄
5-(((2-Hydroxyethyl)thio)methyl)quinolin-8-ol	5-(((2-Hydroxyethyl)thio)methyl)quinolin-8-ol	分子量：235.30 密度：N/A 沸点：N/A 熔点：N/A	1248549-22-5	C₁₂H₁₃NO₂S
3-(8-Hydroxy-7-nitroquinolin-5-yl)propanoic acid	3-(8-Hydroxy-7-nitroquinolin-5-yl)propanoic acid	分子量：262.22 密度：N/A 沸点：N/A 熔点：N/A	1248565-28-7	C₁₂H₁₀N₂O₅
2-Formyl-6-(trifluoromethyl)nicotinonitrile	2-Formyl-6-(trifluoromethyl)nicotinonitrile	分子量：200.12 密度：N/A 沸点：N/A 熔点：N/A	1289051-90-6	C₈H₃F₃N₂O
Benzyl ((3R,4R)-4-(hydroxymethyl)tetrahydrofuran-3-yl)carbamate	Benzyl ((3R,4R)-4-(hydroxymethyl)tetrahydrofuran-3-yl)carbamate	分子量：251.28 密度：N/A 沸点：N/A 熔点：N/A	623582-55-8	C₁₃H₁₇NO₄
6-Chloro-8-iodo-3,4-dihydronaphthalen-1(2H)-one	6-Chloro-8-iodo-3,4-dihydronaphthalen-1(2H)-one	分子量：306.53 密度：N/A 沸点：N/A 熔点：N/A	1260010-93-2	C₁₀H₈ClIO
(S)-tert-Butyl 6-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-2-aminohexanoate	(S)-tert-Butyl 6-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-2-aminohexanoate	分子量：424.5 密度：N/A 沸点：N/A 熔点：N/A	754175-99-0	C₂₅H₃₂N₂O₄
Ethyl 7-bromo-3-hydroxy-5-methoxy-1H-indole-2-carboxylate	Ethyl 7-bromo-3-hydroxy-5-methoxy-1H-indole-2-carboxylate	分子量：314.13 密度：N/A 沸点：N/A 熔点：N/A	1360948-65-7	C₁₂H₁₂BrNO₄
1-Methyl-2-oxo-1,2-dihydropyrimidine-4-carboxylic acid	1-Methyl-2-oxo-1,2-dihydropyrimidine-4-carboxylic acid	分子量：154.12 密度：N/A 沸点：N/A 熔点：N/A	24806-53-9	C₆H₆N₂O₃
2-(3-Bromo-6-(trifluoromethyl)pyridin-2-yl)oxazole	2-(3-Bromo-6-(trifluoromethyl)pyridin-2-yl)oxazole	分子量：293.04 密度：N/A 沸点：N/A 熔点：N/A	1211586-77-4	C₉H₄BrF₃N₂O
3-Bromo-2-(1H-1,2,3-triazol-4-yl)-6-(trifluoromethyl)pyridine	3-Bromo-2-(1H-1,2,3-triazol-4-yl)-6-(trifluoromethyl)pyridine	分子量：293.04 密度：N/A 沸点：N/A 熔点：N/A	1211583-90-2	C₈H₄BrF₃N₄
7-Chloro-2-(chloromethyl)-1H-benzo[d]imidazole-6-carboxylic acid	7-Chloro-2-(chloromethyl)-1H-benzo[d]imidazole-6-carboxylic acid	分子量：245.06 密度：N/A 沸点：N/A 熔点：N/A	1388035-71-9	C₉H₆Cl₂N₂O₂
(R)-Methyl 2-amino-3-(2-fluoro-4-hydroxyphenyl)propanoate	(R)-Methyl 2-amino-3-(2-fluoro-4-hydroxyphenyl)propanoate	分子量：213.21 密度：N/A 沸点：N/A 熔点：N/A	1213143-20-4	C₁₀H₁₂FNO₃
2-Amino-6-(difluoromethyl)benzoic acid	2-Amino-6-(difluoromethyl)benzoic acid	分子量：187.14 密度：N/A 沸点：N/A 熔点：N/A	1654011-33-2	C₈H₇F₂NO₂
2-Chloro-5-methoxy-3-(trifluoromethyl)pyridine	2-Chloro-5-methoxy-3-(trifluoromethyl)pyridine	分子量：211.57 密度：N/A 沸点：N/A 熔点：N/A	1245912-84-8	C₇H₅ClF₃NO
1,3-Dimethyl-1H-imidazo[4,5-b]pyrazine-2(3H)-thione	1,3-Dimethyl-1H-imidazo[4,5-b]pyrazine-2(3H)-thione	分子量：180.23 密度：N/A 沸点：N/A 熔点：N/A	84996-50-9	C₇H₈N₄S
4-Bromo-5-chloro-2-(trifluoromethyl)pyridine	4-Bromo-5-chloro-2-(trifluoromethyl)pyridine	分子量：260.44 密度：N/A 沸点：N/A 熔点：N/A	1211516-56-1	C₆H₂BrClF₃N
6-(2-(Benzyloxy)-3-formylphenyl)picolinonitrile	6-(2-(Benzyloxy)-3-formylphenyl)picolinonitrile	分子量：314.3 密度：N/A 沸点：N/A 熔点：N/A	1632370-50-3	C₂₀H₁₄N₂O₂
(2S,6R)-2-Methyl-5,6-dihydro-2H-2,6-methanobenzo[g][1,3]oxazocin-4(3H)-one	(2S,6R)-2-Methyl-5,6-dihydro-2H-2,6-methanobenzo[g][1,3]oxazocin-4(3H)-one	分子量：203.24 密度：N/A 沸点：N/A 熔点：N/A	1289085-09-1	C₁₂H₁₃NO₂
5-Hydroxy-1-((2R,4R,5S)-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-5-methylimidazolidine-2,4-dione	5-Hydroxy-1-((2R,4R,5S)-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-5-methylimidazolidine-2,4-dione	分子量：246.22 密度：N/A 沸点：N/A 熔点：N/A	127707-34-0	C₉H₁₄N₂O₆
6-(4-(Methylamino)phenyl)picolinaldehyde	6-(4-(Methylamino)phenyl)picolinaldehyde	分子量：212.25 密度：N/A 沸点：N/A 熔点：N/A	2167183-32-4	C₁₃H₁₂N₂O