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
(1R,2S)-2-(1-Methylpiperidin-4-yl)cyclopropan-1-amine	(1R,2S)-2-(1-Methylpiperidin-4-yl)cyclopropan-1-amine	分子量：154.25 密度：N/A 沸点：N/A 熔点：N/A	1903840-47-0	C₉H₁₈N₂
1-[1-[(2-Methylpropan-2-yl)oxycarbonyl]piperidin-2-yl]cyclobutane-1-carboxylic acid	1-[1-[(2-Methylpropan-2-yl)oxycarbonyl]piperidin-2-yl]cyclobutane-1-carboxylic acid	分子量：283.36 密度：N/A 沸点：N/A 熔点：N/A	2229174-20-1	C₁₅H₂₅NO₄
1-(5-Bromopyrimidin-2-yl)-2-fluoroethanol	1-(5-Bromopyrimidin-2-yl)-2-fluoroethanol	分子量：221.03 密度：N/A 沸点：N/A 熔点：N/A	2228148-11-4	C₆H₆BrFN₂O
(3S,6R)-4-(((9H-fluoren-9-yl)methoxy)carbonyl)-6-methylmorpholine-3-carboxylic acid	(3S,6R)-4-(((9H-fluoren-9-yl)methoxy)carbonyl)-6-methylmorpholine-3-carboxylic acid	分子量：367.4 密度：N/A 沸点：N/A 熔点：N/A	2381318-90-5	C₂₁H₂₁NO₅
3-[(1R,3S)-3-{[(tert-butoxy)carbonyl]amino}-2,2-dimethylcyclobutyl]propanoic acid	3-[(1R,3S)-3-{[(tert-butoxy)carbonyl]amino}-2,2-dimethylcyclobutyl]propanoic acid	分子量：271.35 密度：N/A 沸点：N/A 熔点：N/A	2287238-17-7	C₁₄H₂₅NO₄
2-[(3R,5S)-1-(9H-Fluoren-9-ylmethoxycarbonyl)-5-methoxycarbonylpyrrolidin-3-yl]acetic acid	2-[(3R,5S)-1-(9H-Fluoren-9-ylmethoxycarbonyl)-5-methoxycarbonylpyrrolidin-3-yl]acetic acid	分子量：409.4 密度：N/A 沸点：N/A 熔点：N/A	2375248-85-2	C₂₃H₂₃NO₆
2-Bromo-N-(cyclopropylmethyl)-4-nitrobenzamide	2-Bromo-N-(cyclopropylmethyl)-4-nitrobenzamide	分子量：299.12 密度：N/A 沸点：N/A 熔点：N/A	2809954-95-6	C₁₁H₁₁BrN₂O₃
4-Amino-2-bromo-N-(2,2-difluoroethyl)benzamide	4-Amino-2-bromo-N-(2,2-difluoroethyl)benzamide	分子量：279.08 密度：N/A 沸点：N/A 熔点：N/A	2814656-90-9	C₉H₉BrF₂N₂O
2-Bromo-4-nitro-N-(2,2,2-trifluoroethyl)benzamide	2-Bromo-4-nitro-N-(2,2,2-trifluoroethyl)benzamide	分子量：327.05 密度：N/A 沸点：N/A 熔点：N/A	2819315-76-7	C₉H₆BrF₃N₂O₃
Ethyl 5-cyano-4-methyl-1H-pyrazole-3-carboxylate	Ethyl 5-cyano-4-methyl-1H-pyrazole-3-carboxylate	分子量：179.18 密度：N/A 沸点：N/A 熔点：N/A	829-06-1	C₈H₉N₃O₂
5-Chloro-3-iodo-1-tetrahydropyran-2-yl-pyrazolo[4,3-d]pyrimidine	5-Chloro-3-iodo-1-tetrahydropyran-2-yl-pyrazolo[4,3-d]pyrimidine	分子量：364.57 密度：N/A 沸点：N/A 熔点：N/A	2581225-72-9	C₁₀H₁₀ClIN₄O
Methyl 5-formyl-4-methoxy-3-methylpicolinate	Methyl 5-formyl-4-methoxy-3-methylpicolinate	分子量：209.20 密度：N/A 沸点：N/A 熔点：N/A	2581222-16-2	C₁₀H₁₁NO₄
5-Fluoro-4-methylsulfanylpyridin-3-amine	5-Fluoro-4-methylsulfanylpyridin-3-amine	分子量：158.20 密度：N/A 沸点：N/A 熔点：N/A	2445791-42-2	C₆H₇FN₂S
2-[2,3,5,6-Tetramethyl-4-(1-oxobutyl)phenoxy]acetic acid	2-[2,3,5,6-Tetramethyl-4-(1-oxobutyl)phenoxy]acetic acid	分子量：278.34 密度：N/A 沸点：N/A 熔点：N/A	1225-21-4	C₁₆H₂₂O₄
2-((Difluoromethoxy)methyl)thiazole	2-((Difluoromethoxy)methyl)thiazole	分子量：165.16 密度：N/A 沸点：N/A 熔点：N/A	2448420-31-1	C₅H₅F₂NOS
1-(3-Bicyclo[4.1.0]heptanyl)-2-chloroethanone	1-(3-Bicyclo[4.1.0]heptanyl)-2-chloroethanone	分子量：172.65 密度：N/A 沸点：N/A 熔点：N/A	2008278-62-2	C₉H₁₃ClO
1-[5-(4,6-dichloro-2-pyrimidinyl)-2-methyl-1-piperidinyl]Ethanone	1-[5-(4,6-dichloro-2-pyrimidinyl)-2-methyl-1-piperidinyl]Ethanone	分子量：288.17 密度：N/A 沸点：N/A 熔点：N/A	2445862-19-9	C₁₂H₁₅Cl₂N₃O
Methyl (2R)-2-aminohex-5-ynoate;hydrochloride	Methyl (2R)-2-aminohex-5-ynoate;hydrochloride	分子量：177.63 密度：N/A 沸点：N/A 熔点：N/A	2460739-83-5	C₇H₁₂ClNO₂
3-Bromo-6-chloro-5-(4-chlorophenyl)pyrazin-2-amine	3-Bromo-6-chloro-5-(4-chlorophenyl)pyrazin-2-amine	分子量：318.98 密度：N/A 沸点：N/A 熔点：N/A	2819691-32-0	C₁₀H₆BrCl₂N₃
Methyl 4-bromo-2-(cyclopropylmethoxy)-6-fluorobenzoate	Methyl 4-bromo-2-(cyclopropylmethoxy)-6-fluorobenzoate	分子量：303.12 密度：N/A 沸点：N/A 熔点：N/A	2814331-23-0	C₁₂H₁₂BrFO₃
(R)-tert-butyl (1-(4-cyanopiperidin-1-yl)-1-oxobutan-2-yl)carbamate	(R)-tert-butyl (1-(4-cyanopiperidin-1-yl)-1-oxobutan-2-yl)carbamate	分子量：295.38 密度：N/A 沸点：N/A 熔点：N/A	2801954-82-3	C₁₅H₂₅N₃O₃
(R)-2,5-dioxopyrrolidin-1-yl 3-((tert-butoxycarbonyl)amino)butanoate	(R)-2,5-dioxopyrrolidin-1-yl 3-((tert-butoxycarbonyl)amino)butanoate	分子量：300.31 密度：N/A 沸点：N/A 熔点：N/A	2819315-40-5	C₁₃H₂₀N₂O₆
1-(3-Fluorobenzyl)azetidine-3-carbonitrile	1-(3-Fluorobenzyl)azetidine-3-carbonitrile	分子量：190.22 密度：N/A 沸点：N/A 熔点：N/A	2814656-74-9	C₁₁H₁₁FN₂
1-(2-Fluorobenzyl)azetidine-3-carbonitrile	1-(2-Fluorobenzyl)azetidine-3-carbonitrile	分子量：190.22 密度：N/A 沸点：N/A 熔点：N/A	2819315-48-3	C₁₁H₁₁FN₂
Methyl 1,2-diazaspiro[2.5]oct-1-ene-6-carboxylate	Methyl 1,2-diazaspiro[2.5]oct-1-ene-6-carboxylate	分子量：168.19 密度：N/A 沸点：N/A 熔点：N/A	36908-75-5	C₈H₁₂N₂O₂
1-Chloro-2-(cyclopropylmethoxy)-3-ethynylbenzene	1-Chloro-2-(cyclopropylmethoxy)-3-ethynylbenzene	分子量：206.67 密度：N/A 沸点：N/A 熔点：N/A	2805157-15-5	C₁₂H₁₁ClO
Methyl 3-(benzyloxy)-4-ethynylbenzoate	Methyl 3-(benzyloxy)-4-ethynylbenzoate	分子量：266.29 密度：N/A 沸点：N/A 熔点：N/A	2816625-60-0	C₁₇H₁₄O₃
(S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(4-guanidinophenyl)propanoic acid	(S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(4-guanidinophenyl)propanoic acid	分子量：444.5 密度：N/A 沸点：N/A 熔点：N/A	351518-30-4	C₂₅H₂₄N₄O₄
3-((2-Cyclobutylethyl)amino)thietane 1,1-dioxide	3-((2-Cyclobutylethyl)amino)thietane 1,1-dioxide	分子量：203.30 密度：N/A 沸点：N/A 熔点：N/A	1866288-07-4	C₉H₁₇NO₂S
Methyl 2-(4-chlorophenyl)-4-oxazoleacetate	Methyl 2-(4-chlorophenyl)-4-oxazoleacetate	分子量：251.66 密度：N/A 沸点：N/A 熔点：N/A	22091-50-5	C₁₂H₁₀ClNO₃
Methyl 4-(1-methylcyclobutyl)benzoate	Methyl 4-(1-methylcyclobutyl)benzoate	分子量：204.26 密度：N/A 沸点：N/A 熔点：N/A	2386821-92-5	C₁₃H₁₆O₂
2-Chloro-3-fluoro-5-oxo-5H-benzo[4,5]thiazolo[3,2-a][1,8]naphthyridine-6-carboxylic acid	2-Chloro-3-fluoro-5-oxo-5H-benzo[4,5]thiazolo[3,2-a][1,8]naphthyridine-6-carboxylic acid	分子量：348.7 密度：N/A 沸点：N/A 熔点：N/A	105686-25-7	C₁₅H₆ClFN₂O₃S
tert-Butyl (6-(fluorosulfonyl)hexyl)carbamate	tert-Butyl (6-(fluorosulfonyl)hexyl)carbamate	分子量：283.36 密度：N/A 沸点：N/A 熔点：N/A	2167975-43-9	C₁₁H₂₂FNO₄S
1,4,5,8,9,12,13,16-Octabromo-2,3,6,7,10,11,14,15-octamethoxytetraphenylene	1,4,5,8,9,12,13,16-Octabromo-2,3,6,7,10,11,14,15-octamethoxytetraphenylene	分子量：1175.8 密度：N/A 沸点：N/A 熔点：N/A	1675269-07-4	C₃₂H₂₄Br₈O₈
N1-(Pyridin-4-ylmethyl)-N2,N2-bis(2-((pyridin-4-ylmethyl)amino)ethyl)ethane-1,2-diamine	N1-(Pyridin-4-ylmethyl)-N2,N2-bis(2-((pyridin-4-ylmethyl)amino)ethyl)ethane-1,2-diamine	分子量：419.6 密度：N/A 沸点：N/A 熔点：N/A	1370518-24-3	C₂₄H₃₃N₇
tert-Butyl (5-iodoisoxazol-3-yl)carbamate	tert-Butyl (5-iodoisoxazol-3-yl)carbamate	分子量：310.09 密度：N/A 沸点：N/A 熔点：N/A	2386780-38-5	C₈H₁₁IN₂O₃
3-((2-(Cyclopent-1-en-1-yl)ethyl)amino)thietane 1,1-dioxide	3-((2-(Cyclopent-1-en-1-yl)ethyl)amino)thietane 1,1-dioxide	分子量：215.31 密度：N/A 沸点：N/A 熔点：N/A	1882745-58-5	C₁₀H₁₇NO₂S
tert-Butyl (3-(fluorosulfonyl)propyl)(methyl)carbamate	tert-Butyl (3-(fluorosulfonyl)propyl)(methyl)carbamate	分子量：255.31 密度：N/A 沸点：N/A 熔点：N/A	2168738-80-3	C₉H₁₈FNO₄S
6-(Aminomethyl)-6-hydroxy-2-thiaspiro[3.3]heptane 2,2-dioxide	6-(Aminomethyl)-6-hydroxy-2-thiaspiro[3.3]heptane 2,2-dioxide	分子量：191.25 密度：N/A 沸点：N/A 熔点：N/A	2303848-27-1	C₇H₁₃NO₃S
(2R)-2-Amino-3-((1-(6-nitrobenzo[d][1,3]dioxol-5-yl)ethyl)thio)propanoic acid	(2R)-2-Amino-3-((1-(6-nitrobenzo[d][1,3]dioxol-5-yl)ethyl)thio)propanoic acid	分子量：314.32 密度：N/A 沸点：N/A 熔点：N/A	1551078-43-3	C₁₂H₁₄N₂O₆S
(2S,2a'S,4'S,6a'S,6b'S,8a'S,8b'R,11a'S,12a'S,12b'R)-4'-Amino-6a',8a'-dimethylhexadecahydro-3H-spiro[furan-2,9'-naphtho[2',1':4,5]indeno[2,1-b]furan]-5,10'(2'H,4H)-dione	(2S,2a'S,4'S,6a'S,6b'S,8a'S,8b'R,11a'S,12a'S,12b'R)-4'-Amino-6a',8a'-dimethylhexadecahydro-3H-spiro[furan-2,9'-naphtho[2',1':4,5]indeno[2,1-b]furan]-5,10'(2'H,4H)-dione	分子量：401.5 密度：N/A 沸点：N/A 熔点：N/A	1042138-30-6	C₂₄H₃₅NO₄
tert-Butyl 3-(sulfamoylmethyl)azetidine-1-carboxylate	tert-Butyl 3-(sulfamoylmethyl)azetidine-1-carboxylate	分子量：250.32 密度：N/A 沸点：N/A 熔点：N/A	2172271-34-8	C₉H₁₈N₂O₄S
(8-Aminotricyclo[3.2.1.02,7]octan-1-yl)methanol	(8-Aminotricyclo[3.2.1.02,7]octan-1-yl)methanol	分子量：153.22 密度：N/A 沸点：N/A 熔点：N/A	2649061-04-9	C₉H₁₅NO
3-(2-((Tetrahydrofuran-3-yl)amino)ethyl)thietane 1,1-dioxide	3-(2-((Tetrahydrofuran-3-yl)amino)ethyl)thietane 1,1-dioxide	分子量：219.30 密度：N/A 沸点：N/A 熔点：N/A	1881136-06-6	C₉H₁₇NO₃S
tert-Butyl (5-cyanobicyclo[3.1.1]heptan-1-yl)carbamate	tert-Butyl (5-cyanobicyclo[3.1.1]heptan-1-yl)carbamate	分子量：236.31 密度：N/A 沸点：N/A 熔点：N/A	2375193-02-3	C₁₃H₂₀N₂O₂
4-[[Boc[3-(Boc-amino)propyl]amino]methyl]-2-pyrrolidinone	4-[[Boc[3-(Boc-amino)propyl]amino]methyl]-2-pyrrolidinone	分子量：371.5 密度：N/A 沸点：N/A 熔点：N/A	2838324-52-8	C₁₈H₃₃N₃O₅
4-(5-Hydroxypyrimidin-2-yl)tetrahydro-2H-thiopyran 1,1-dioxide	4-(5-Hydroxypyrimidin-2-yl)tetrahydro-2H-thiopyran 1,1-dioxide	分子量：228.27 密度：N/A 沸点：N/A 熔点：N/A	2169438-99-5	C₉H₁₂N₂O₃S
tert-Butyl (tert-butoxycarbonyl)(4-chloro-5-cyanopyridin-2-yl)carbamate	tert-Butyl (tert-butoxycarbonyl)(4-chloro-5-cyanopyridin-2-yl)carbamate	分子量：353.80 密度：N/A 沸点：N/A 熔点：N/A	2227205-55-0	C₁₆H₂₀ClN₃O₄
tert-Butyl (4-(fluorosulfonyl)butyl)carbamate	tert-Butyl (4-(fluorosulfonyl)butyl)carbamate	分子量：255.31 密度：N/A 沸点：N/A 熔点：N/A	2167546-48-5	C₉H₁₈FNO₄S
3-(2-((tert-Butoxycarbonyl)amino)ethyl)cyclobutanecarboxylic acid	3-(2-((tert-Butoxycarbonyl)amino)ethyl)cyclobutanecarboxylic acid	分子量：243.30 密度：N/A 沸点：N/A 熔点：N/A	2352790-29-3	C₁₂H₂₁NO₄