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-(2,4-dichlorophenoxy)-N-(1-(5,6,7,8-tetrahydrocinnolin-3-yl)piperidin-4-yl)acetamide	2-(2,4-dichlorophenoxy)-N-(1-(5,6,7,8-tetrahydrocinnolin-3-yl)piperidin-4-yl)acetamide	分子量：435.3 密度：N/A 沸点：N/A 熔点：N/A	2034320-03-9	C₂₁H₂₄Cl₂N₄O₂
(2R)-3-{[(5-fluoro-2-hydroxyphenyl)methyl]amino}propane-1,2-diol	(2R)-3-{[(5-fluoro-2-hydroxyphenyl)methyl]amino}propane-1,2-diol	分子量：215.22 密度：N/A 沸点：N/A 熔点：N/A	2137057-88-4	C₁₀H₁₄FNO₃
(2R)-3-{[(2-fluoro-4-hydroxyphenyl)methyl]amino}propane-1,2-diol	(2R)-3-{[(2-fluoro-4-hydroxyphenyl)methyl]amino}propane-1,2-diol	分子量：215.22 密度：N/A 沸点：N/A 熔点：N/A	2137025-97-7	C₁₀H₁₄FNO₃
(2R)-3-{[(4-methoxy-3-methylphenyl)methyl]amino}propane-1,2-diol	(2R)-3-{[(4-methoxy-3-methylphenyl)methyl]amino}propane-1,2-diol	分子量：225.28 密度：N/A 沸点：N/A 熔点：N/A	2137057-73-7	C₁₂H₁₉NO₃
(2R)-3-{[(3-chloro-4-hydroxyphenyl)methyl]amino}propane-1,2-diol	(2R)-3-{[(3-chloro-4-hydroxyphenyl)methyl]amino}propane-1,2-diol	分子量：231.67 密度：N/A 沸点：N/A 熔点：N/A	2137027-06-4	C₁₀H₁₄ClNO₃
ethyl (3R)-1-benzyl-4-oxopiperidine-3-carboxylate hydrochloride	ethyl (3R)-1-benzyl-4-oxopiperidine-3-carboxylate hydrochloride	分子量：297.78 密度：N/A 沸点：N/A 熔点：N/A	1823182-44-0	C₁₅H₂₀ClNO₃
N-(2-methyl-3-oxo-2,3,5,6,7,8-hexahydrocinnolin-6-yl)-2-phenylacetamide	N-(2-methyl-3-oxo-2,3,5,6,7,8-hexahydrocinnolin-6-yl)-2-phenylacetamide	分子量：297.35 密度：N/A 沸点：N/A 熔点：N/A	1904369-97-6	C₁₇H₁₉N₃O₂
6-(Chloromethyl)benzofuran	6-(Chloromethyl)benzofuran	分子量：166.60 密度：N/A 沸点：N/A 熔点：N/A	1092350-86-1	C₉H₇ClO
(4-Bromo-7-fluoro-1H-indol-3-yl)methanamine	(4-Bromo-7-fluoro-1H-indol-3-yl)methanamine	分子量：243.08 密度：N/A 沸点：N/A 熔点：N/A	1360953-34-9	C₉H₈BrFN₂
tert-Butyl 3-hydroxy-5-methylpicolinate	tert-Butyl 3-hydroxy-5-methylpicolinate	分子量：209.24 密度：N/A 沸点：N/A 熔点：N/A	2089320-19-2	C₁₁H₁₅NO₃
2-Fluoro-7-methoxybenzothiazole	2-Fluoro-7-methoxybenzothiazole	分子量：183.20 密度：N/A 沸点：N/A 熔点：N/A	1261460-98-3	C₈H₆FNOS
1-(6-Nitropyridin-3-yl)piperidin-2-one	1-(6-Nitropyridin-3-yl)piperidin-2-one	分子量：221.21 密度：N/A 沸点：N/A 熔点：N/A	1416537-23-9	C₁₀H₁₁N₃O₃
2-Bromo-1-(2-fluoro-3-nitrophenyl)ethanone	2-Bromo-1-(2-fluoro-3-nitrophenyl)ethanone	分子量：262.03 密度：N/A 沸点：N/A 熔点：N/A	1336804-14-8	C₈H₅BrFNO₃
Imidazo[1,2-a]quinoline-1-carboxylic acid	Imidazo[1,2-a]quinoline-1-carboxylic acid	分子量：212.20 密度：N/A 沸点：N/A 熔点：N/A	1159828-26-8	C₁₂H₈N₂O₂
Hydrazine, (2,6-difluoro-3,5-dimethoxyphenyl)-	Hydrazine, (2,6-difluoro-3,5-dimethoxyphenyl)-	分子量：204.17 密度：N/A 沸点：N/A 熔点：N/A	1841081-45-5	C₈H₁₀F₂N₂O₂
2-Boc-5-hydroxy-7-oxo-2-azaspiro[3.4]octane	2-Boc-5-hydroxy-7-oxo-2-azaspiro[3.4]octane	分子量：241.28 密度：N/A 沸点：N/A 熔点：N/A	2091140-76-8	C₁₂H₁₉NO₄
3,4-Dimethoxy-N,I+/-,I+/--trimethylbenzeneethanamine	3,4-Dimethoxy-N,I+/-,I+/--trimethylbenzeneethanamine	分子量：223.31 密度：N/A 沸点：N/A 熔点：N/A	136483-54-0	C₁₃H₂₁NO₂
3-Ethoxy-1-phenylcyclobutanecarboxylic acid	3-Ethoxy-1-phenylcyclobutanecarboxylic acid	分子量：220.26 密度：N/A 沸点：N/A 熔点：N/A	1779136-92-3	C₁₃H₁₆O₃
Methyl 2-(2-chlorophenyl)-6-oxo-1,6-dihydropyridine-3-carboxylate	Methyl 2-(2-chlorophenyl)-6-oxo-1,6-dihydropyridine-3-carboxylate	分子量：263.67 密度：N/A 沸点：N/A 熔点：N/A	1707371-97-8	C₁₃H₁₀ClNO₃
Methyl 5-nitro-3-propoxybenzofuran-2-carboxylate	Methyl 5-nitro-3-propoxybenzofuran-2-carboxylate	分子量：279.24 密度：N/A 沸点：N/A 熔点：N/A	1707391-74-9	C₁₃H₁₃NO₆
3-(Difluoromethoxy)-5-nitrobenzofuran-2-carboxylic acid	3-(Difluoromethoxy)-5-nitrobenzofuran-2-carboxylic acid	分子量：273.15 密度：N/A 沸点：N/A 熔点：N/A	1708079-40-6	C₁₀H₅F₂NO₆
4-Chloro-3-isopropoxythiophene-2-carboxylic acid	4-Chloro-3-isopropoxythiophene-2-carboxylic acid	分子量：220.67 密度：N/A 沸点：N/A 熔点：N/A	1774902-71-4	C₈H₉ClO₃S
2-Chloro-4-methyl-6,7-dihydro-5H-cyclopenta[b]pyridine-3-carbonitrile	2-Chloro-4-methyl-6,7-dihydro-5H-cyclopenta[b]pyridine-3-carbonitrile	分子量：192.64 密度：N/A 沸点：N/A 熔点：N/A	1122022-84-7	C₁₀H₉ClN₂
[4-Methyl-5-(trifluoromethyl)-4H-1,2,4-triazol-3-yl]methanol	[4-Methyl-5-(trifluoromethyl)-4H-1,2,4-triazol-3-yl]methanol	分子量：181.12 密度：N/A 沸点：N/A 熔点：N/A	1549675-25-3	C₅H₆F₃N₃O
2-(Piperidin-1-yl)benzo[d]thiazole-4-carboxylicacid	2-(Piperidin-1-yl)benzo[d]thiazole-4-carboxylicacid	分子量：262.33 密度：N/A 沸点：N/A 熔点：N/A	1713639-21-4	C₁₃H₁₄N₂O₂S
1-(2-Cyclopropylpyrazolo[1,5-a]pyrazin-4-yl)piperidine-4-carboxylic acid	1-(2-Cyclopropylpyrazolo[1,5-a]pyrazin-4-yl)piperidine-4-carboxylic acid	分子量：286.33 密度：N/A 沸点：N/A 熔点：N/A	1708288-25-8	C₁₅H₁₈N₄O₂
3-Chloro-7-iodo-1H-indazole	3-Chloro-7-iodo-1H-indazole	分子量：278.48 密度：N/A 沸点：N/A 熔点：N/A	1388033-34-8	C₇H₄ClIN₂
1-(6-Chloropyridin-2-yl)prop-2-en-1-one	1-(6-Chloropyridin-2-yl)prop-2-en-1-one	分子量：167.59 密度：N/A 沸点：N/A 熔点：N/A	1553927-61-9	C₈H₆ClNO
2-(2-Bromo-4-chloro-3,5-dimethylphenoxy)acetamide	2-(2-Bromo-4-chloro-3,5-dimethylphenoxy)acetamide	分子量：292.55 密度：N/A 沸点：N/A 熔点：N/A	1706439-18-0	C₁₀H₁₁BrClNO₂
8-Azaspiro[bicyclo[3.2.1]octane-3,2'-morpholin]-5'-one	8-Azaspiro[bicyclo[3.2.1]octane-3,2'-morpholin]-5'-one	分子量：196.25 密度：N/A 沸点：N/A 熔点：N/A	1881288-15-8	C₁₀H₁₆N₂O₂
1-(3-((6-Methoxypyridazin-3-yl)oxy)pyrrolidin-1-yl)-2-phenoxyethanone	1-(3-((6-Methoxypyridazin-3-yl)oxy)pyrrolidin-1-yl)-2-phenoxyethanone	分子量：329.35 密度：N/A 沸点：N/A 熔点：N/A	2034502-49-1	C₁₇H₁₉N₃O₄
(2S,6S)-2-Methyl-6-(trifluoromethyl)morpholin-3-one	(2S,6S)-2-Methyl-6-(trifluoromethyl)morpholin-3-one	分子量：183.13 密度：N/A 沸点：N/A 熔点：N/A	2306247-88-9	C₆H₈F₃NO₂
2-(5-cyclopropylisoxazole-3-carbonyl)-3,4-dihydro-1H-dipyrido[1,2-a:4',3'-d]pyrimidin-11(2H)-one	2-(5-cyclopropylisoxazole-3-carbonyl)-3,4-dihydro-1H-dipyrido[1,2-a:4',3'-d]pyrimidin-11(2H)-one	分子量：336.3 密度：N/A 沸点：N/A 熔点：N/A	2034412-81-0	C₁₈H₁₆N₄O₃
4-(6-Chloro-1H-imidazo[4,5-c]pyridin-4-yl)morpholine	4-(6-Chloro-1H-imidazo[4,5-c]pyridin-4-yl)morpholine	分子量：238.67 密度：N/A 沸点：N/A 熔点：N/A	1639974-81-4	C₁₀H₁₁ClN₄O
4-(5-(6-Chloro-3-methylpyridazin-4-yl)-2-methoxypyridin-3-yl)morpholine	4-(5-(6-Chloro-3-methylpyridazin-4-yl)-2-methoxypyridin-3-yl)morpholine	分子量：320.77 密度：N/A 沸点：N/A 熔点：N/A	1800401-36-8	C₁₅H₁₇ClN₄O₂
N-(3-Chlorophenyl)-5-fluorothiophene-2-sulfonamide	N-(3-Chlorophenyl)-5-fluorothiophene-2-sulfonamide	分子量：291.8 密度：N/A 沸点：N/A 熔点：N/A	1855889-66-5	C₁₀H₇ClFNO₂S₂
(R)-3-(3,5-Dichlorophenyl)piperidine	(R)-3-(3,5-Dichlorophenyl)piperidine	分子量：230.13 密度：N/A 沸点：N/A 熔点：N/A	1336797-18-2	C₁₁H₁₃Cl₂N
Diphenyl(((3aR,5S,5aR,8aS,8bR)-2,2,7,7-tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4',5'-d]pyran-5-yl)methyl)phosphine	Diphenyl(((3aR,5S,5aR,8aS,8bR)-2,2,7,7-tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4',5'-d]pyran-5-yl)methyl)phosphine	分子量：428.5 密度：N/A 沸点：N/A 熔点：N/A	62102-18-5	C₂₄H₂₉O₅P
2-(2-Chloro-6-methoxyphenyl)-2-fluoroethan-1-amine	2-(2-Chloro-6-methoxyphenyl)-2-fluoroethan-1-amine	分子量：203.64 密度：N/A 沸点：N/A 熔点：N/A	1823800-60-7	C₉H₁₁ClFNO
3,3-Difluoro-D-proline	3,3-Difluoro-D-proline	分子量：151.11 密度：N/A 沸点：N/A 熔点：N/A	1821782-74-4	C₅H₇F₂NO₂
B-Benzo[b]naphtho[2,1-d]furan-8-ylboronic acid	B-Benzo[b]naphtho[2,1-d]furan-8-ylboronic acid	分子量：262.1 密度：N/A 沸点：N/A 熔点：N/A	1627917-21-8	C₁₆H₁₁BO₃
1-[3-[4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl]propyl]-2-pyrrolidinone	1-[3-[4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl]propyl]-2-pyrrolidinone	分子量：319.2 密度：N/A 沸点：N/A 熔点：N/A	1619987-85-7	C₁₆H₂₆BN₃O₃
(4-(2-methoxy-3-nitrophenyl)-1H-1,2,3-triazol-1-yl)methyl pivalate	(4-(2-methoxy-3-nitrophenyl)-1H-1,2,3-triazol-1-yl)methyl pivalate	分子量：334.33 密度：N/A 沸点：N/A 熔点：N/A	1609393-95-4	C₁₅H₁₈N₄O₅
Tert-butyl 3-(2-methylsulfonyloxyethoxy)azetidine-1-carboxylate	Tert-butyl 3-(2-methylsulfonyloxyethoxy)azetidine-1-carboxylate	分子量：295.35 密度：N/A 沸点：N/A 熔点：N/A	1619991-57-9	C₁₁H₂₁NO₆S
[(2R)-3-carboxy-2-(prop-2-enoyloxy)propyl]trimethylazanium	[(2R)-3-carboxy-2-(prop-2-enoyloxy)propyl]trimethylazanium	分子量：216.25 密度：N/A 沸点：N/A 熔点：N/A	20874-05-9	C₁₀H₁₈NO₄+
Methyl 3-amino-5-anilino-6-chloro-2-pyrazinecarboxylate	Methyl 3-amino-5-anilino-6-chloro-2-pyrazinecarboxylate	分子量：278.69 密度：N/A 沸点：N/A 熔点：N/A	1837-82-7	C₁₂H₁₁ClN₄O₂
Cyclopropa[3,4]cyclopenta[1,2-b]furan-2(3H)-one, 4-(5,5-dimethyl-1,3-dioxan-2-yl)hexahydro-, [3aR-(3aI+/-,3bI(2),4I+/-,4aI(2),5aI+/-)]-	Cyclopropa[3,4]cyclopenta[1,2-b]furan-2(3H)-one, 4-(5,5-dimethyl-1,3-dioxan-2-yl)hexahydro-, [3aR-(3aI+/-,3bI(2),4I+/-,4aI(2),5aI+/-)]-	分子量：252.31 密度：N/A 沸点：N/A 熔点：N/A	39521-49-8	C₁₄H₂₀O₄
(5E)-3-ethyl-5-[(5-nitro-2-furyl)methylene]-1,3-thiazolidine-2,4-dione	(5E)-3-ethyl-5-[(5-nitro-2-furyl)methylene]-1,3-thiazolidine-2,4-dione	分子量：268.25 密度：N/A 沸点：N/A 熔点：N/A	25603-13-8	C₁₀H₈N₂O₅S
2-oxo-N-(1-phenyl-2-(2H-1,2,3-triazol-2-yl)ethyl)-2H-chromene-3-carboxamide	2-oxo-N-(1-phenyl-2-(2H-1,2,3-triazol-2-yl)ethyl)-2H-chromene-3-carboxamide	分子量：360.4 密度：N/A 沸点：N/A 熔点：N/A	2034547-88-9	C₂₀H₁₆N₄O₃
1-{[(2R)-oxolan-2-yl]methyl}-1H-1,2,4-triazol-3-amine	1-{[(2R)-oxolan-2-yl]methyl}-1H-1,2,4-triazol-3-amine	分子量：168.20 密度：N/A 沸点：N/A 熔点：N/A	2137086-28-1	C₇H₁₂N₄O