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-[[4-[(2-Methylpropan-2-yl)oxycarbonylamino]phenyl]carbamoyl]phenyl] acetate	[2-[[4-[(2-Methylpropan-2-yl)oxycarbonylamino]phenyl]carbamoyl]phenyl] acetate	分子量：370.4 密度：N/A 沸点：N/A 熔点：N/A	1098069-06-7	C₂₀H₂₂N₂O₅
Cytidine, N-phenyl-	Cytidine, N-phenyl-	分子量：319.31 密度：N/A 沸点：N/A 熔点：N/A	18839-89-9	C₁₅H₁₇N₃O₅
Cyclohexane, 1-ethynyl-4-methoxy-, trans-	Cyclohexane, 1-ethynyl-4-methoxy-, trans-	分子量：138.21 密度：N/A 沸点：N/A 熔点：N/A	2472890-09-6	C₉H₁₄O
2-(1-(tert-Butoxycarbonyl)piperidin-4-yl)-2-hydroxyacetic acid	2-(1-(tert-Butoxycarbonyl)piperidin-4-yl)-2-hydroxyacetic acid	分子量：259.30 密度：N/A 沸点：N/A 熔点：N/A	1783989-87-6	C₁₂H₂₁NO₅
2,2-Dimethyl-7-bromo-3,4-dihydro-2H-1-benzopyran	2,2-Dimethyl-7-bromo-3,4-dihydro-2H-1-benzopyran	分子量：241.12 密度：N/A 沸点：N/A 熔点：N/A	263903-20-4	C₁₁H₁₃BrO
2-Amino-1-[3-(dimethylamino)phenyl]propan-1-one	2-Amino-1-[3-(dimethylamino)phenyl]propan-1-one	分子量：192.26 密度：N/A 沸点：N/A 熔点：N/A	1513639-75-2	C₁₁H₁₆N₂O
3-((2,6-Dichlorophenyl)thio)propanenitrile	3-((2,6-Dichlorophenyl)thio)propanenitrile	分子量：232.13 密度：N/A 沸点：N/A 熔点：N/A	1286143-56-3	C₉H₇Cl₂NS
4-(Difluoromethoxy)-1,2-dimethylbenzene	4-(Difluoromethoxy)-1,2-dimethylbenzene	分子量：172.17 密度：N/A 沸点：N/A 熔点：N/A	1225520-28-4	C₉H₁₀F₂O
1-(4-ethyl-3-oxo-3,4-dihydro-2-quinoxalinyl)-N-[3-(3-methylpiperidino)propyl]-4-piperidinecarboxamide	1-(4-ethyl-3-oxo-3,4-dihydro-2-quinoxalinyl)-N-[3-(3-methylpiperidino)propyl]-4-piperidinecarboxamide	分子量：439.6 密度：N/A 沸点：N/A 熔点：N/A	1189439-60-8	C₂₅H₃₇N₅O₂
Ethyl 5-(methylamino)-1,3,4-thiadiazole-2-carboxylate	Ethyl 5-(methylamino)-1,3,4-thiadiazole-2-carboxylate	分子量：187.22 密度：N/A 沸点：N/A 熔点：N/A	90641-75-1	C₆H₉N₃O₂S
N-(2-cyanophenyl)-3-[3-(4-methyl-3,5-dioxo-2-phenyl-2,3,4,5-tetrahydro-1,2,4-triazin-6-yl)-1,2,4-oxadiazol-5-yl]propanamide	N-(2-cyanophenyl)-3-[3-(4-methyl-3,5-dioxo-2-phenyl-2,3,4,5-tetrahydro-1,2,4-triazin-6-yl)-1,2,4-oxadiazol-5-yl]propanamide	分子量：443.4 密度：N/A 沸点：N/A 熔点：N/A	1189494-85-6	C₂₂H₁₇N₇O₄
5-Bromo-3-chloro-2-methoxyaniline	5-Bromo-3-chloro-2-methoxyaniline	分子量：236.49 密度：N/A 沸点：N/A 熔点：N/A	1547274-38-3	C₇H₇BrClNO
(-)-Przewalskin B	(-)-Przewalskin B	分子量：330.4 密度：N/A 沸点：N/A 熔点：N/A	924896-96-8	C₂₀H₂₆O₄
3-[1-(4-chlorophenyl)-2-nitroethyl]-4-hydroxy-6-methyl-2H-pyran-2-one	3-[1-(4-chlorophenyl)-2-nitroethyl]-4-hydroxy-6-methyl-2H-pyran-2-one	分子量：309.70 密度：N/A 沸点：N/A 熔点：N/A	325474-40-6	C₁₄H₁₂ClNO₅
Eicosatetraenoic acid, 5-hydroxy-	Eicosatetraenoic acid, 5-hydroxy-	分子量：320.5 密度：N/A 沸点：N/A 熔点：N/A	73179-98-3	C₂₀H₃₂O₃
4-hydroxy-N-(4-methoxyphenyl)-2-oxo-1,2-dihydroquinoline-3-carboxamide	4-hydroxy-N-(4-methoxyphenyl)-2-oxo-1,2-dihydroquinoline-3-carboxamide	分子量：310.30 密度：N/A 沸点：N/A 熔点：N/A	302922-44-7	C₁₇H₁₄N₂O₄
3-(4-fluorobenzyl)-4-hydroxy-1-(3-pyridinylmethyl)-2(1H)-pyridinone	3-(4-fluorobenzyl)-4-hydroxy-1-(3-pyridinylmethyl)-2(1H)-pyridinone	分子量：310.3 密度：N/A 沸点：N/A 熔点：N/A	477846-00-7	C₁₈H₁₅FN₂O₂
4-hydroxy-8-nitrothieno[2,3-b:4,5-b']dipyridine-2,7(1H,6H)-dione	4-hydroxy-8-nitrothieno[2,3-b:4,5-b']dipyridine-2,7(1H,6H)-dione	分子量：279.23 密度：N/A 沸点：N/A 熔点：N/A	634600-35-4	C₁₀H₅N₃O₅S
4-(2-Thiazolyl)-2(1H)-pyrimidinethione	4-(2-Thiazolyl)-2(1H)-pyrimidinethione	分子量：195.3 密度：N/A 沸点：N/A 熔点：N/A	874830-89-4	C₇H₅N₃S₂
(+-)-Benzenesulfonamide, 3-cyano-N-(4-((5,6-dihydro-4-hydroxy-6-(2-(4-hydroxyphenyl)ethyl)-6-(1-methylethyl)-2-oxo-2H-pyran-3-yl)thio)-5-(1,1-dimethylethyl)-2-methylphenyl)-	(+-)-Benzenesulfonamide, 3-cyano-N-(4-((5,6-dihydro-4-hydroxy-6-(2-(4-hydroxyphenyl)ethyl)-6-(1-methylethyl)-2-oxo-2H-pyran-3-yl)thio)-5-(1,1-dimethylethyl)-2-methylphenyl)-	分子量：634.8 密度：N/A 沸点：N/A 熔点：N/A	207736-60-5	C₃₄H₃₈N₂O₆S₂
(+-)-2-Pyridinesulfonamide, N-(4-((5,6-dihydro-4-hydroxy-6-(2-(4-hydroxyphenyl)ethyl)-6-(1-methylethyl)-2-oxo-2H-pyran-3-yl)thio)-5-(1,1-dimethylethyl)-2-methylphenyl)-	(+-)-2-Pyridinesulfonamide, N-(4-((5,6-dihydro-4-hydroxy-6-(2-(4-hydroxyphenyl)ethyl)-6-(1-methylethyl)-2-oxo-2H-pyran-3-yl)thio)-5-(1,1-dimethylethyl)-2-methylphenyl)-	分子量：610.8 密度：N/A 沸点：N/A 熔点：N/A	263842-56-4	C₃₂H₃₈N₂O₆S₂
(+-)-Methanesulfonamide, N-(4-((5,6-dihydro-4-hydroxy-6-(2-(4-hydroxyphenyl)ethyl)-6-methyl-2-oxo-2H-pyran-3-yl)thio)-5-(1,1-dimethylethyl)-2-methylphenyl)-	(+-)-Methanesulfonamide, N-(4-((5,6-dihydro-4-hydroxy-6-(2-(4-hydroxyphenyl)ethyl)-6-methyl-2-oxo-2H-pyran-3-yl)thio)-5-(1,1-dimethylethyl)-2-methylphenyl)-	分子量：519.7 密度：N/A 沸点：N/A 熔点：N/A	263842-61-1	C₂₆H₃₃NO₆S₂
n-[5-Tert-butyl-4-({6-hydroxy-2-[2-(4-hydroxyphenyl)ethyl]-2-methyl-4-oxo-3,4-dihydro-2h-pyran-5-yl}sulfanyl)-2-methylphenyl]-1-methyl-1h-imidazole-4-sulfonamide	n-[5-Tert-butyl-4-({6-hydroxy-2-[2-(4-hydroxyphenyl)ethyl]-2-methyl-4-oxo-3,4-dihydro-2h-pyran-5-yl}sulfanyl)-2-methylphenyl]-1-methyl-1h-imidazole-4-sulfonamide	分子量：585.7 密度：N/A 沸点：N/A 熔点：N/A	263842-66-6	C₂₉H₃₅N₃O₆S₂
n-(5-Tert-butyl-4-{[6-hydroxy-4-oxo-2-(2-phenylethyl)-2-(propan-2-yl)-3,4-dihydro-2h-pyran-5-yl]sulfanyl}-2-methylphenyl)methanesulfonamide	n-(5-Tert-butyl-4-{[6-hydroxy-4-oxo-2-(2-phenylethyl)-2-(propan-2-yl)-3,4-dihydro-2h-pyran-5-yl]sulfanyl}-2-methylphenyl)methanesulfonamide	分子量：531.7 密度：N/A 沸点：N/A 熔点：N/A	263842-69-9	C₂₈H₃₇NO₅S₂
n-(5-Tert-butyl-4-{[6-hydroxy-4-oxo-2-(2-phenylethyl)-2-(propan-2-yl)-3,4-dihydro-2h-pyran-5-yl]sulfanyl}-2-methylphenyl)pyridine-3-sulfonamide	n-(5-Tert-butyl-4-{[6-hydroxy-4-oxo-2-(2-phenylethyl)-2-(propan-2-yl)-3,4-dihydro-2h-pyran-5-yl]sulfanyl}-2-methylphenyl)pyridine-3-sulfonamide	分子量：594.8 密度：N/A 沸点：N/A 熔点：N/A	263842-76-8	C₃₂H₃₈N₂O₅S₂
Pmid21757343C30	Pmid21757343C30	分子量：383.9 密度：N/A 沸点：N/A 熔点：N/A	1332336-37-4	C₂₀H₁₈ClN₃OS
[2-[6-(3-Chlorophenyl)-4-methylpyridin-3-yl]pyrrolidin-1-yl]-pyridin-3-ylmethanone	[2-[6-(3-Chlorophenyl)-4-methylpyridin-3-yl]pyrrolidin-1-yl]-pyridin-3-ylmethanone	分子量：377.9 密度：N/A 沸点：N/A 熔点：N/A	1332336-44-3	C₂₂H₂₀ClN₃O
4-Hydroxy-5-phenyl-7H-thieno[2,3-b]	4-Hydroxy-5-phenyl-7H-thieno[2,3-b]	分子量：243.28 密度：N/A 沸点：N/A 熔点：N/A	179337-87-2	C₁₃H₉NO₂S
1-(3-{[3-chloro-5-(trifluoromethyl)-2-pyridinyl]oxy}phenyl)-3-(2,4-dichlorobenzyl)-4-hydroxy-2(1H)-pyridinone	1-(3-{[3-chloro-5-(trifluoromethyl)-2-pyridinyl]oxy}phenyl)-3-(2,4-dichlorobenzyl)-4-hydroxy-2(1H)-pyridinone	分子量：541.7 密度：N/A 沸点：N/A 熔点：N/A	866049-47-0	C₂₄H₁₄Cl₃F₃N₂O₃
Dimethyl 5,5-dicyano-2-hydroxy-4,6-di(1-naphthyl)-1-cyclohexene-1,3-dicarboxylate	Dimethyl 5,5-dicyano-2-hydroxy-4,6-di(1-naphthyl)-1-cyclohexene-1,3-dicarboxylate	分子量：516.5 密度：N/A 沸点：N/A 熔点：N/A	1212156-96-1	C₃₂H₂₄N₂O₅
Dimethyl 5,5-dicyano-6-(4-fluorophenyl)-2-hydroxy-4-(4-methylphenyl)-1-cyclohexene-1,3-dicarboxylate	Dimethyl 5,5-dicyano-6-(4-fluorophenyl)-2-hydroxy-4-(4-methylphenyl)-1-cyclohexene-1,3-dicarboxylate	分子量：448.4 密度：N/A 沸点：N/A 熔点：N/A	1212132-35-8	C₂₅H₂₁FN₂O₅
6-Hydroxybenzo[d]isothiazol-3(2H)-one 1,1-dioxide	6-Hydroxybenzo[d]isothiazol-3(2H)-one 1,1-dioxide	分子量：199.19 密度：N/A 沸点：N/A 熔点：N/A	106971-57-7	C₇H₅NO₄S
2-Butoxy-5-tert-butylaniline	2-Butoxy-5-tert-butylaniline	分子量：221.34 密度：N/A 沸点：N/A 熔点：N/A	33353-65-0	C₁₄H₂₃NO
Benzenamine, 3,5-dimethyl-2-(3-phenylpropoxy)-	Benzenamine, 3,5-dimethyl-2-(3-phenylpropoxy)-	分子量：255.35 密度：N/A 沸点：N/A 熔点：N/A	1275723-73-3	C₁₇H₂₁NO
2-(Benzyloxy)-5-tert-butylaniline	2-(Benzyloxy)-5-tert-butylaniline	分子量：255.35 密度：N/A 沸点：N/A 熔点：N/A	1268063-43-9	C₁₇H₂₁NO
Sulfonamide-Substituted Cyclooctylpyranone deriv. 35g	Sulfonamide-Substituted Cyclooctylpyranone deriv. 35g	分子量：514.0 密度：N/A 沸点：N/A 熔点：N/A	166335-20-2	C₂₇H₂₈ClNO₅S
5-tert-Butyl-2-(2-methoxy-ethoxy)-phenylamine	5-tert-Butyl-2-(2-methoxy-ethoxy)-phenylamine	分子量：223.31 密度：N/A 沸点：N/A 熔点：N/A	1558149-09-9	C₁₃H₂₁NO₂
N,N-dimethyl-2-(piperidin-3-yl)acetamide	N,N-dimethyl-2-(piperidin-3-yl)acetamide	分子量：170.25 密度：N/A 沸点：N/A 熔点：N/A	138304-50-4	C₉H₁₈N₂O
2-pyrazol-1-yl-4-(5-pyridin-2-yl-1H-pyrazol-4-yl)pyridine	2-pyrazol-1-yl-4-(5-pyridin-2-yl-1H-pyrazol-4-yl)pyridine	分子量：288.31 密度：N/A 沸点：N/A 熔点：N/A	1333492-52-6	C₁₆H₁₂N₆
7-Hydroxy-2-(3-trifluoromethyl-phenylamino)-4H-thiazolo[4,5-b]pyridin-5-one	7-Hydroxy-2-(3-trifluoromethyl-phenylamino)-4H-thiazolo[4,5-b]pyridin-5-one	分子量：327.28 密度：N/A 沸点：N/A 熔点：N/A	340812-47-7	C₁₃H₈F₃N₃O₂S
2-Hydroxy-7,8,9-trimethyl-1H-thieno[2,3-b;4,5-b']dipyridin-4-one	2-Hydroxy-7,8,9-trimethyl-1H-thieno[2,3-b;4,5-b']dipyridin-4-one	分子量：260.31 密度：N/A 沸点：N/A 熔点：N/A	939888-52-5	C₁₃H₁₂N₂O₂S
N-(3,4-difluorophenyl)-4-hydroxy-2-oxo-1,2-dihydroquinoline-3-carboxamide	N-(3,4-difluorophenyl)-4-hydroxy-2-oxo-1,2-dihydroquinoline-3-carboxamide	分子量：316.26 密度：N/A 沸点：N/A 熔点：N/A	333760-73-9	C₁₆H₁₀F₂N₂O₃
2-(Pyridin-4-YL)octahydropyrrolo[3,4-C]pyrrole	2-(Pyridin-4-YL)octahydropyrrolo[3,4-C]pyrrole	分子量：189.26 密度：N/A 沸点：N/A 熔点：N/A	1260228-13-4	C₁₁H₁₅N₃
3-Bromo-2-butoxy-5-methylaniline	3-Bromo-2-butoxy-5-methylaniline	分子量：258.15 密度：N/A 沸点：N/A 熔点：N/A	1554248-02-0	C₁₁H₁₆BrNO
2-Amino-2-(2-nitrophenyl)propan-1-ol	2-Amino-2-(2-nitrophenyl)propan-1-ol	分子量：196.20 密度：N/A 沸点：N/A 熔点：N/A	1270581-10-6	C₉H₁₂N₂O₃
N-(1-cyano-1-methylpropyl)quinoline-2-carboxamide	N-(1-cyano-1-methylpropyl)quinoline-2-carboxamide	分子量：253.30 密度：N/A 沸点：N/A 熔点：N/A	1252307-16-6	C₁₅H₁₅N₃O
3-amino-N-phenylpyridine-2-carboxamide	3-amino-N-phenylpyridine-2-carboxamide	分子量：213.23 密度：N/A 沸点：N/A 熔点：N/A	1154418-81-1	C₁₂H₁₁N₃O
9-Amino-2,3-dihydroxy-2,3-dimethylnonane	9-Amino-2,3-dihydroxy-2,3-dimethylnonane	分子量：203.32 密度：N/A 沸点：N/A 熔点：N/A	1246449-90-0	C₁₁H₂₅NO₂
4-((Benzhydrylamino)methyl)-2-ethoxyphenol	4-((Benzhydrylamino)methyl)-2-ethoxyphenol	分子量：333.4 密度：N/A 沸点：N/A 熔点：N/A	949925-15-9	C₂₂H₂₃NO₂
2-(2,3-Dimethylphenyl)-4-[1-(2-furylmethyl)pyrrolidin-3-yl]pyridine	2-(2,3-Dimethylphenyl)-4-[1-(2-furylmethyl)pyrrolidin-3-yl]pyridine	分子量：332.4 密度：N/A 沸点：N/A 熔点：N/A	1269358-85-1	C₂₂H₂₄N₂O