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 |
| Ethyl 2-amino-6-fluorobenzoate hydrochloride
|
Ethyl 2-amino-6-fluorobenzoate hydrochloride
|
分子量：219.64
密度：N/A
沸点：N/A
熔点：N/A
|
1432680-72-2
|
C9H11ClFNO2
|
| Methyl 5-chloro-2-acetamidopyridine-4-carboxylate
|
Methyl 5-chloro-2-acetamidopyridine-4-carboxylate
|
分子量：228.63
密度：N/A
沸点：N/A
熔点：N/A
|
1820648-39-2
|
C9H9ClN2O3
|
| 5-Tert-butyl 1-methyl (2R)-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}pentanedioate
|
5-Tert-butyl 1-methyl (2R)-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}pentanedioate
|
分子量：439.5
密度：N/A
沸点：N/A
熔点：N/A
|
1820576-16-6
|
C25H29NO6
|
| 1-Methyl 4-prop-2-EN-1-YL (2S)-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}butanedioate
|
1-Methyl 4-prop-2-EN-1-YL (2S)-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}butanedioate
|
分子量：409.4
密度：N/A
沸点：N/A
熔点：N/A
|
170943-09-6
|
C23H23NO6
|
| methyl (2R)-5-{[(benzyloxy)carbonyl]amino}-2-{[(tert-butoxy)carbonyl]amino}pentanoate
|
methyl (2R)-5-{[(benzyloxy)carbonyl]amino}-2-{[(tert-butoxy)carbonyl]amino}pentanoate
|
分子量：380.4
密度：N/A
沸点：N/A
熔点：N/A
|
1820583-13-8
|
C19H28N2O6
|
| Methyl (2S)-2-{[(benzyloxy)carbonyl]amino}-5-(1,3-dioxoisoindol-2-YL)pentanoate
|
Methyl (2S)-2-{[(benzyloxy)carbonyl]amino}-5-(1,3-dioxoisoindol-2-YL)pentanoate
|
分子量：410.4
密度：N/A
沸点：N/A
熔点：N/A
|
142165-70-6
|
C22H22N2O6
|
| 1,5-Dimethyl (2S)-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}pentanedioate
|
1,5-Dimethyl (2S)-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}pentanedioate
|
分子量：397.4
密度：N/A
沸点：N/A
熔点：N/A
|
1820572-04-0
|
C22H23NO6
|
| methyl (2R)-2-{[(tert-butoxy)carbonyl]amino}-5-(3-nitrocarbamimidamido)pentanoate
|
methyl (2R)-2-{[(tert-butoxy)carbonyl]amino}-5-(3-nitrocarbamimidamido)pentanoate
|
分子量：333.34
密度：N/A
沸点：N/A
熔点：N/A
|
1820570-44-2
|
C12H23N5O6
|
| methyl (2R)-3-cyclohexyl-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}propanoate
|
methyl (2R)-3-cyclohexyl-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}propanoate
|
分子量：407.5
密度：N/A
沸点：N/A
熔点：N/A
|
1820583-21-8
|
C25H29NO4
|
| (R)-1-tert-Butyl 4-methyl 2-((tert-butoxycarbonyl)amino)succinate
|
(R)-1-tert-Butyl 4-methyl 2-((tert-butoxycarbonyl)amino)succinate
|
分子量：303.35
密度：N/A
沸点：N/A
熔点：N/A
|
77004-76-3
|
C14H25NO6
|
| Methyl (2R)-2-{[(benzyloxy)carbonyl]amino}-5-carbamimidamidopentanoate
|
Methyl (2R)-2-{[(benzyloxy)carbonyl]amino}-5-carbamimidamidopentanoate
|
分子量：322.36
密度：N/A
沸点：N/A
熔点：N/A
|
108729-23-3
|
C15H22N4O4
|
| Ethyl 2-ethoxy-4-(2-methoxy-2-oxoethyl)benzoate
|
Ethyl 2-ethoxy-4-(2-methoxy-2-oxoethyl)benzoate
|
分子量：266.29
密度：N/A
沸点：N/A
熔点：N/A
|
855868-68-7
|
C14H18O5
|
| Methyl (2S)-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}-2-phenylacetate
|
Methyl (2S)-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}-2-phenylacetate
|
分子量：387.4
密度：N/A
沸点：N/A
熔点：N/A
|
1820574-62-6
|
C24H21NO4
|
| Methyl 1-(3,4-difluorophenyl)-5-oxopyrrolidine-3-carboxylate
|
Methyl 1-(3,4-difluorophenyl)-5-oxopyrrolidine-3-carboxylate
|
分子量：255.22
密度：N/A
沸点：N/A
熔点：N/A
|
1820604-85-0
|
C12H11F2NO3
|
| methyl (2S)-2-{[(tert-butoxy)carbonyl]amino}-3-[(9H-xanthen-9-yl)carbamoyl]propanoate
|
methyl (2S)-2-{[(tert-butoxy)carbonyl]amino}-3-[(9H-xanthen-9-yl)carbamoyl]propanoate
|
分子量：426.5
密度：N/A
沸点：N/A
熔点：N/A
|
1820581-52-9
|
C23H26N2O6
|
| 1-Benzyl 4-methyl (2S)-2-{[(benzyloxy)carbonyl]amino}butanedioate
|
1-Benzyl 4-methyl (2S)-2-{[(benzyloxy)carbonyl]amino}butanedioate
|
分子量：371.4
密度：N/A
沸点：N/A
熔点：N/A
|
1820579-34-7
|
C20H21NO6
|
| Methyl (2S)-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}hexanoate
|
Methyl (2S)-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}hexanoate
|
分子量：367.4
密度：N/A
沸点：N/A
熔点：N/A
|
1820579-45-0
|
C22H25NO4
|
| Methyl 8-bromo-6-chloroimidazo[1,2-A]pyridine-2-carboxylate
|
Methyl 8-bromo-6-chloroimidazo[1,2-A]pyridine-2-carboxylate
|
分子量：289.51
密度：N/A
沸点：N/A
熔点：N/A
|
1820683-44-0
|
C9H6BrClN2O2
|
| MEthyl (2-methyl-2H-pyrazol-3-yl)acrylate
|
MEthyl (2-methyl-2H-pyrazol-3-yl)acrylate
|
分子量：166.18
密度：N/A
沸点：N/A
熔点：N/A
|
1563651-10-4
|
C8H10N2O2
|
| Methyl (2R)-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}-4-methylpentanoate
|
Methyl (2R)-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}-4-methylpentanoate
|
分子量：367.4
密度：N/A
沸点：N/A
熔点：N/A
|
172846-55-8
|
C22H25NO4
|
| Methyl 1-(3-bromophenyl)cyclobutane-1-carboxylate
|
Methyl 1-(3-bromophenyl)cyclobutane-1-carboxylate
|
分子量：269.13
密度：N/A
沸点：N/A
熔点：N/A
|
1820607-51-9
|
C12H13BrO2
|
| 4-Methyl-1-thia-4,8-diazaspiro[4.5]decan-3-one hydrochloride
|
4-Methyl-1-thia-4,8-diazaspiro[4.5]decan-3-one hydrochloride
|
分子量：222.74
密度：N/A
沸点：N/A
熔点：N/A
|
1432680-93-7
|
C8H15ClN2OS
|
| Methyl 5-fluoro-2-[4-fluoro-2-(methoxycarbonyl)phenyl]benzoate
|
Methyl 5-fluoro-2-[4-fluoro-2-(methoxycarbonyl)phenyl]benzoate
|
分子量：306.26
密度：N/A
沸点：N/A
熔点：N/A
|
1820640-40-1
|
C16H12F2O4
|
| Methyl 4-chloro-3-(2-methylpropoxy)benzoate
|
Methyl 4-chloro-3-(2-methylpropoxy)benzoate
|
分子量：242.70
密度：N/A
沸点：N/A
熔点：N/A
|
1820619-35-9
|
C12H15ClO3
|
| Methyl 2-(5-chloro-3-fluoropyridin-2-yl)acetate
|
Methyl 2-(5-chloro-3-fluoropyridin-2-yl)acetate
|
分子量：203.60
密度：N/A
沸点：N/A
熔点：N/A
|
1804879-61-5
|
C8H7ClFNO2
|
| Methyl 1-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}cyclopentane-1-carboxylate
|
Methyl 1-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}cyclopentane-1-carboxylate
|
分子量：365.4
密度：N/A
沸点：N/A
熔点：N/A
|
1820718-21-5
|
C22H23NO4
|
| Methyl (2S)-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}-3-(naphthalen-1-YL)propanoate
|
Methyl (2S)-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}-3-(naphthalen-1-YL)propanoate
|
分子量：451.5
密度：N/A
沸点：N/A
熔点：N/A
|
1820579-54-1
|
C29H25NO4
|
| Methyl (2R)-3-(tert-butoxy)-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}propanoate
|
Methyl (2R)-3-(tert-butoxy)-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}propanoate
|
分子量：397.5
密度：N/A
沸点：N/A
熔点：N/A
|
1820580-35-5
|
C23H27NO5
|
| Methyl 4-bromo-2-butoxybenzoate
|
Methyl 4-bromo-2-butoxybenzoate
|
分子量：287.15
密度：N/A
沸点：N/A
熔点：N/A
|
1820640-94-5
|
C12H15BrO3
|
| Methyl 1-cyclopropyl-6-fluoro-8-methoxy-7-[3-(methylamino)piperidin-1-YL]-4-oxoquinoline-3-carboxylate
|
Methyl 1-cyclopropyl-6-fluoro-8-methoxy-7-[3-(methylamino)piperidin-1-YL]-4-oxoquinoline-3-carboxylate
|
分子量：403.4
密度：N/A
沸点：N/A
熔点：N/A
|
1820717-27-8
|
C21H26FN3O4
|
| 6-Bromo-4-hydroxy-quinoline-3-carboxylic acid methyl ester
|
6-Bromo-4-hydroxy-quinoline-3-carboxylic acid methyl ester
|
分子量：282.09
密度：N/A
沸点：N/A
熔点：N/A
|
1593717-84-0
|
C11H8BrNO3
|
| 2-Chloro-5-(trifluoromethyl)cinnamic acid methyl ester
|
2-Chloro-5-(trifluoromethyl)cinnamic acid methyl ester
|
分子量：264.63
密度：N/A
沸点：N/A
熔点：N/A
|
1401024-30-3
|
C11H8ClF3O2
|
| 1-(9H-Fluoren-9-ylmethyl) 3-methyl azetidine-1,3-dicarboxylate
|
1-(9H-Fluoren-9-ylmethyl) 3-methyl azetidine-1,3-dicarboxylate
|
分子量：337.4
密度：N/A
沸点：N/A
熔点：N/A
|
1820604-93-0
|
C20H19NO4
|
| Methyl (2S)-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}-3-(triphenylmethoxy)propanoate
|
Methyl (2S)-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}-3-(triphenylmethoxy)propanoate
|
分子量：583.7
密度：N/A
沸点：N/A
熔点：N/A
|
171820-89-6
|
C38H33NO5
|
| Methyl 1-(3,4-dichlorophenyl)cyclopentane-1-carboxylate
|
Methyl 1-(3,4-dichlorophenyl)cyclopentane-1-carboxylate
|
分子量：273.15
密度：N/A
沸点：N/A
熔点：N/A
|
1820705-22-3
|
C13H14Cl2O2
|
| Methyl 4-bromo-2-propoxybenzoate
|
Methyl 4-bromo-2-propoxybenzoate
|
分子量：273.12
密度：N/A
沸点：N/A
熔点：N/A
|
1820665-98-2
|
C11H13BrO3
|
| tert-butyl N-[3-methoxy-1-(5-methylfuran-2-yl)propyl]carbamate
|
tert-butyl N-[3-methoxy-1-(5-methylfuran-2-yl)propyl]carbamate
|
分子量：269.34
密度：N/A
沸点：N/A
熔点：N/A
|
1432680-76-6
|
C14H23NO4
|
| methyl (2S)-2-{[(tert-butoxy)carbonyl]amino}-2-cyclopropylacetate
|
methyl (2S)-2-{[(tert-butoxy)carbonyl]amino}-2-cyclopropylacetate
|
分子量：229.27
密度：N/A
沸点：N/A
熔点：N/A
|
1449295-52-6
|
C11H19NO4
|
| 4-Bromo-7-chloro-6-(4-ethoxybenzyl)-2,3-dihydrobenzofuran
|
4-Bromo-7-chloro-6-(4-ethoxybenzyl)-2,3-dihydrobenzofuran
|
分子量：367.7
密度：N/A
沸点：N/A
熔点：N/A
|
1415477-25-6
|
C17H16BrClO2
|
| (S)-2-(3-ethoxy-4-methoxyphenyl)-1-(methylsulphonyl)-eth-2-ylamine N-acetyl-L-leucine salt
|
(S)-2-(3-ethoxy-4-methoxyphenyl)-1-(methylsulphonyl)-eth-2-ylamine N-acetyl-L-leucine salt
|
分子量：446.6
密度：N/A
沸点：N/A
熔点：N/A
|
1382429-55-1
|
C20H34N2O7S
|
| Methyl 2-(2-chlorophenyl)-2,2-difluoroacetate
|
Methyl 2-(2-chlorophenyl)-2,2-difluoroacetate
|
分子量：220.60
密度：N/A
沸点：N/A
熔点：N/A
|
1782332-00-6
|
C9H7ClF2O2
|
| 2-Amino-5-(4-methylphenyl)-1,3-oxazol-4-one;dihydrochloride
|
2-Amino-5-(4-methylphenyl)-1,3-oxazol-4-one;dihydrochloride
|
分子量：263.12
密度：N/A
沸点：N/A
熔点：N/A
|
1432680-09-5
|
C10H12Cl2N2O2
|
| Methyl 5-bromo-2-cyclohexaneamidobenzoate
|
Methyl 5-bromo-2-cyclohexaneamidobenzoate
|
分子量：340.21
密度：N/A
沸点：N/A
熔点：N/A
|
1820683-37-1
|
C15H18BrNO3
|
| methyl (2S)-2-{[(tert-butoxy)carbonyl]amino}-5-[3-(2,2,4,6,7-pentamethyl-3H-1-benzofuran-5-sulfonyl)carbamimidamido]pentanoate
|
methyl (2S)-2-{[(tert-butoxy)carbonyl]amino}-5-[3-(2,2,4,6,7-pentamethyl-3H-1-benzofuran-5-sulfonyl)carbamimidamido]pentanoate
|
分子量：540.7
密度：N/A
沸点：N/A
熔点：N/A
|
1820574-57-9
|
C25H40N4O7S
|
| Methyl 3-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}naphthalene-2-carboxylate
|
Methyl 3-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}naphthalene-2-carboxylate
|
分子量：423.5
密度：N/A
沸点：N/A
熔点：N/A
|
1820620-35-6
|
C27H21NO4
|
| Methyl 2-(morpholin-4-YL)pyridine-3-carboxylate
|
Methyl 2-(morpholin-4-YL)pyridine-3-carboxylate
|
分子量：222.24
密度：N/A
沸点：N/A
熔点：N/A
|
773134-07-9
|
C11H14N2O3
|
| Methyl 2-chloro-4-[4-(methoxycarbonyl)phenyl]benzoate
|
Methyl 2-chloro-4-[4-(methoxycarbonyl)phenyl]benzoate
|
分子量：304.72
密度：N/A
沸点：N/A
熔点：N/A
|
161225-09-8
|
C16H13ClO4
|
| 7,7-Difluorobicyclo[2.2.1]heptane-2-carboxylic acid
|
7,7-Difluorobicyclo[2.2.1]heptane-2-carboxylic acid
|
分子量：176.16
密度：N/A
沸点：N/A
熔点：N/A
|
1432679-45-2
|
C8H10F2O2
|
| Methyl 2-methyl-2-[(2-nitrobenzene)sulfonyl]propanoate
|
Methyl 2-methyl-2-[(2-nitrobenzene)sulfonyl]propanoate
|
分子量：287.29
密度：N/A
沸点：N/A
熔点：N/A
|
1820666-55-4
|
C11H13NO6S
|
| Methyl 2-methyl-3-[4-(trifluoromethoxy)phenyl]benzoate
|
Methyl 2-methyl-3-[4-(trifluoromethoxy)phenyl]benzoate
|
分子量：310.27
密度：N/A
沸点：N/A
熔点：N/A
|
1630035-51-6
|
C16H13F3O3
|