CAS Number

A CAS number, also known as a CAS registry number or CAS log number, is a unique identification number assigned by the Chemicals Service (CAS), a division of the American Chemical Society, to chemical substances. It is an important tool for retrieving information on chemicals that have multiple names. Chemical substances can be described in many different ways, such as by molecular formula, structural formula, systematic name, generic name, or trade name. However, the CAS Registry Number is unique to a single substance.

CAS 2171246-19-6|1-benzyl-4-[(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-(methylsulfanyl)bu CAS 2171596-59-9|2-{[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methoxy-4-methylpentanamido]met CAS 2171754-54-2|2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methoxy-N,4-dimethylpentanamido] CAS 2171788-53-5|3-[N-ethyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methoxy-4-methylpentanam CAS 2171715-68-5|2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methoxy-4-methyl-N-(propan-2-yl) CAS 2171596-50-0|1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methoxy-4-methylpentanamido]cycl CAS 2171784-17-9|1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methoxy-4-methylpentanoyl]azetid CAS 2171628-66-1|2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methoxy-4-methylpentanamido]acet CAS 2171715-58-3|3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-[(1,2-thiazol-4-yl)carbamoyl]propan CAS 2171701-86-1|4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-[(1,2,3-thiadiazol-4-yl)carbamoyl]b CAS 2172251-34-0|2-(cyclopropylmethyl)-3-[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylpent CAS 2171148-15-3|(1rs,3rs)-3-[(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylbutanamido] CAS 2171148-64-2|3-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2,2-difluoropropanamido]cyclobutan CAS 2171304-53-1|3-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-N,4,4-trimethylpentanamido]cyclobu CAS 2171449-68-4|3-[N-methyl4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methyloxolane-3-amido]cy CAS 2172629-11-5|2-{2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylbut-2-enamido]ethyl}-1, CAS 2172634-56-7|4-chloro-3-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylbut-2-enamido]ben CAS 2172632-79-8|2-chloro-5-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylbut-2-enamido]ben CAS 2172629-58-0|3-chloro-4-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylbut-2-enamido]ben CAS 2172608-22-7|3-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylbut-2-enamido]-3-(thiophen CAS 2172622-11-4|3-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylbut-2-enamido]propanoic ac CAS 2227794-72-9|(2R)-2-{[(1RS,2SR)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentyl]formami CAS 2227945-47-1|rac-4-{[(1R,2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentyl]formamido} CAS 2172013-20-4|1-[2-cyclobutyl-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoyl]azetidine-3- CAS 2228027-01-6|rac-2-{3-[(1R,2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentaneamido]cy CAS 2172251-15-7|2-cyclobutyl-3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylpentanamido]p CAS 2171715-48-1|2-cyclobutyl-3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylpentanamido]p CAS 2172609-94-6|2-cyclobutyl-3-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylbut-2-enamido CAS 2172170-75-9|3-{[1-benzyl-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pyrrolidin-3-yl]formamido CAS 2172552-54-2|2-cyclobutyl-3-{2-[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutyl]acetamid CAS 2171889-44-2|2-cyclobutyl-3-({1-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclobutyl}fo CAS 2171955-95-4|2-cyclobutyl-3-[2-cyclopropyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanam CAS 2649073-67-4|2-({5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-1,2-oxazol-3-yl}formamido CAS 2171889-28-2|3-({5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-1,2-oxazol-3-yl}formamido CAS 2171226-85-8|(2R)-2-({5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-1,2-oxazol-3-yl}form CAS 2171955-91-0|4-({5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-1,2-oxazol-3-yl}formamido CAS 2171954-65-5|4-(1-{5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-1,2-oxazol-3-yl}-N-meth CAS 2172170-59-9|3-(N-ethyl-1-{5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-1,2-oxazol-3-yl CAS 2171289-86-2|(2S)-2-({5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-1,2-oxazol-3-yl}form CAS 2171954-44-0|1-{5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-1,2-oxazole-3-amido}cyclob CAS 2171678-91-2|1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolane-2-carbonyl]piperidine-3-car CAS 2171788-29-5|1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolane-2-carbonyl]piperidine-4-car CAS 2308470-78-0|(2S)-1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolane-2-carbonyl]piperidine- CAS 2171678-83-2|2-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolane-2-amido]cyclopentane-1-carb CAS 2171596-26-0|3-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolane-2-carbonyl]-1,3-thiazolidin CAS 2308474-61-3|(4R)-3-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolane-2-carbonyl]-1,3-thiazo CAS 2171788-05-7|2-{1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolane-2-amido]cyclobutyl}aceti CAS 2171596-18-0|2-{1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolane-2-carbonyl]pyrrolidin-3- CAS 2171955-55-6|2-{[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]methyl}cyclohexane-1-c CAS 2171606-57-6|4-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-4-methylpentanoyl}morpholi CAS 2171596-00-0|4-{[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolan-2-yl]formamido}-2-methoxybu CAS 2171678-65-0|1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolane-2-amido]cyclohexane-1-carbo CAS 2171606-33-8|2-{N-cyclopentyl-1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolan-2-yl]formam CAS 2171592-98-4|3-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolane-3-amido]oxolane-2-carboxyli CAS 2171955-47-6|(2RS,3SR)-3-[(1RS&,2SR&)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclo CAS 2227709-98-8|rac-(2R,3S)-3-{5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]furan-2-amido}o CAS 2227759-50-2|rac-(2R,3S)-3-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)benzamido]oxolane-2-car CAS 2172552-34-8|(2RS,3SR)-3-[(1RS&,2SR&)-2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)meth CAS 2227938-31-8|rac-(2R,3S)-3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pent-4-ynamido]oxolane- CAS 2171955-42-1|3-[3-cyclopropyl-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]propanoic CAS 2171176-21-7|2-[(2S)-N-benzyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3,3-dimethylbutanami CAS 2172576-36-0|2-{N-benzyl-1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentyl]formamido}a CAS 2172170-27-1|2-{N-benzyl-1-[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentyl]formamido}a CAS 2171935-49-0|2-[N-benzyl-3-cyclopropyl-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido] CAS 2172634-85-2|4-bromo-2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylbut-2-enamido]benz CAS 2171955-23-8|2-(2-{3-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclobutyl}acetamido)ace CAS 2171592-83-7|4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-{[2-hydroxy-2-(1H-imidazol-4-yl)eth CAS 2171226-78-9|4-[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]but-2-ynoic acid CAS 2227793-11-3|(3RS,4RS)-1-[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanoyl]-3,4-dimet CAS 2171453-74-8|2-[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanoyl]-octahydrocyclopenta CAS 2171176-16-0|4-[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]benzoic acid CAS 2171285-71-3|4-[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]-2-hydroxybenzoic CAS 2171289-85-1|5-{[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]methyl}pyridine-2 CAS 2171285-59-7|4-[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]-3-methylbenzoic a CAS 2171535-81-0|2-{1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoyl]piperidin-2-yl}acetic CAS 2171595-83-6|4-({bicyclo[4.1.0]heptan-2-yl}carbamoyl)-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}ami CAS 2171678-48-9|3-[(1,1-dioxo-1lambda6-thiepan-4-yl)carbamoyl]-3-({[(9H-fluoren-9-yl)methoxy]carbon CAS 2172552-25-7|1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoyl]-4-(methoxymethyl)piperidi CAS 2171854-38-7|1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methoxy-2-methylpropanoyl]-4-met CAS 2172169-73-0|1-{2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)acetamido]acetyl}-4-methylpiperi CAS 2228133-52-4|2-Fluoro-1-methyl-3-(prop-2-yn-1-yl)benzene CAS 2171450-36-3|1-[(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3,3-dimethylbutanoyl]-4-methy CAS 2171605-69-7|1-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3,3-dimethylbutanoyl]-4-methylpipe CAS 2171176-12-6|2-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutaneamido]-5-hydroxybenzoic CAS 2171225-88-8|(2S)-5-methoxy-5-oxo-2-{[(1rs,3rs)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyc CAS 2171352-04-6|(3R)-3-({3-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-2,2-difluorocyclopro CAS 2171431-34-6|(3R)-3-[2-(cyclopropylmethyl)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanam CAS 2171348-24-4|(3S)-3-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-(propan-2-yl)butanamido]but CAS 2171441-36-2|(3S)-3-[2-(cyclopropylmethyl)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanam CAS 2138084-14-5|5-Bromo-2-tert-butylcyclohexane-1-carbonitrile CAS 2308466-26-2|(3S)-3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methanesulfonylbutanamido]b CAS 2171156-99-1|(3S)-3-({2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethyl]-1,3-thiazol-4-yl}fo CAS 2171156-93-5|(3S)-3-{[4-bromo-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)phenyl]formamido}pent CAS 2171287-00-4|(3S)-3-{[3-bromo-5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)phenyl]formamido}pent CAS 2172552-11-1|3-cyclopropyl-4-{[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopent-2-en-1-yl] CAS 2171535-61-6|4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-5-(3-methylidenepyrrolidin-1-yl)-5-ox CAS 2171678-18-3|3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-{[(6-methyloxan-2-yl)methyl]carbamo CAS 2171782-88-8|4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-5-(4-methyl-5-oxo-1,4-diazepan-1-yl)- CAS 2171613-14-0|3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-(4-methyl-5-oxo-1,4-diazepan-1-yl)- CAS 2308480-58-0|3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-{[(2S)-1-hydroxy-4-methylpentan-2-y
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