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 2228223-64-9|2-{[2-Bromo-5-(trifluoromethyl)phenyl]methyl}oxirane CAS 2229535-23-1|tert-butyl N-[4-(1H-pyrazol-4-yl)phenyl]carbamate CAS 2229342-02-1|1-[2-(5-Methylpyrazin-2-yl)propan-2-yl]cyclopropan-1-amine CAS 2228624-91-5|5-{[1-(Methylamino)cyclopropyl]methyl}thiophene-2-carbonitrile CAS 2146005-82-3|2-Chloro-1-[4-fluoro-2-(trifluoromethyl)phenyl]ethan-1-ol CAS 2228548-31-8|{Pyrazolo[1,5-a]pyrimidin-2-yl}methanesulfonamide CAS 2227701-90-6|(3R)-3-(3-bromo-4-methoxyphenyl)-3-hydroxypropanoic acid CAS 2228481-94-3|3-(Aminomethyl)-3-(5-methyl-1,2-oxazol-3-yl)cyclobutan-1-ol CAS 2649086-99-5|3-(2-Isocyanatopropan-2-yl)-4,5,6,7-tetrahydro-1-benzothiophene CAS 2229424-04-6|1-(1-Ethylcyclobutyl)cyclobutane-1-carbonitrile CAS 2227810-95-7|(1S)-1-{pyrazolo[1,5-a]pyridin-3-yl}ethan-1-ol CAS 2227862-74-8|(3R)-3-hydroxy-3-(4-methylthiophen-2-yl)propanoic acid CAS 2228223-37-6|2-(Aminomethyl)-3-{[(tert-butoxy)carbonyl](methyl)amino}butanoic acid CAS 2229629-68-7|(6-chloro-1-methyl-1H-indol-3-yl)methanesulfonamide CAS 2229423-99-6|tert-butyl N-[2-(5-chloro-2-hydroxy-3-methoxyphenyl)-1-oxopropan-2-yl]-N-methylcarb CAS 2228624-67-5|tert-butyl N-{1-[1-(cyclopropylmethyl)-1H-1,2,3-triazol-4-yl]-2-oxoethyl}-N-methylc CAS 2227701-85-9|(1R)-1-(3-chloro-5-fluorophenyl)-2,2,2-trifluoroethan-1-ol CAS 2228950-02-3|[1-(Cyclopentylmethyl)-4,4-difluorocyclohexyl]methanamine CAS 2229307-26-8|3-[2-(Dimethylamino)phenyl]oxolane-2,5-dione CAS 2228121-61-5|2-Amino-3-hydroxy-3-[2-methyl-4-(trifluoromethyl)phenyl]propanoic acid CAS 2228742-45-6|3-[5-(Methoxycarbonyl)furan-2-yl]-1,2-oxazole-5-carboxylic acid CAS 2408968-96-5|Methyl 6-(trifluoromethyl)morpholine-2-carboxylate CAS 2408969-26-4|Methyl 6-(trifluoromethyl)morpholine-2-carboxylate hydrochloride CAS 2228624-56-2|4-[1-(hydroxymethyl)cyclopropyl]-N,N-dimethylbenzamide CAS 2228949-85-5|O-[1-(3-trifluoromethanesulfonylphenyl)ethyl]hydroxylamine CAS 2228270-59-3|4-{Pyrazolo[1,5-a]pyridin-3-yloxy}piperidine CAS 2229306-97-0|tert-butyl N-[4-(3-amino-2-hydroxypropyl)-2-methoxyphenyl]carbamate CAS 2229534-84-1|2-(1-bromopropan-2-yl)-5H,6H,7H,8H-imidazo[1,2-a]pyridine CAS 2408937-46-0|(3aR,6aS)-3a,6a-dimethyl-hexahydro-1H-furo[3,4-c]pyrrole-5-carboxamide CAS 2229513-54-4|4-(3-Methoxypyridin-2-yl)butanal CAS 2228624-39-1|3-(3-Cyclopentylpropyl)piperidin-3-ol CAS 2228547-41-7|1-(1,5-dimethyl-1H-pyrazol-3-yl)-3-oxocyclobutane-1-carboxylic acid CAS 2228223-11-6|4,4-Difluoro-3-(4-methylnaphthalen-1-yl)butanoic acid CAS 2228376-04-1|methyl 1-methyl-4-(piperazin-1-yl)-1H-pyrazole-3-carboxylate CAS 2228742-04-7|[4,4-difluoro-1-(1-methyl-1H-pyrazol-5-yl)cyclohexyl]methanamine CAS 2228949-47-9|3-(2-Methyl-5-nitrophenyl)oxolane-2,5-dione CAS 2228547-33-7|1-(Dimethyl-1,3-oxazol-2-yl)-2,2-dimethylcyclopropane-1-carboxylic acid CAS 2228741-99-7|4-(5-Methoxypyridin-3-yl)-1,3-thiazol-2-amine CAS 2228376-02-9|tert-butyl N-{1-oxo-2-[1-(propan-2-yl)-1H-pyrazol-4-yl]propan-2-yl}carbamate CAS 2229534-79-4|2-[2-Fluoro-5-(trifluoromethyl)phenyl]-2-methoxypropan-1-amine CAS 2229341-54-0|tert-butyl N-[2-(1-amino-2,2-dimethylcyclopropyl)-4,5-dimethoxyphenyl]carbamate CAS 2393811-18-0|N-[1-(2-fluorophenyl)cyclobutyl]prop-2-enamide CAS 2229423-82-7|3-Amino-3-(4-fluoro-2-methylphenyl)cyclobutan-1-ol CAS 2228547-09-7|2-(8-Methoxy-2,3-dihydro-1,4-benzodioxin-6-yl)acetic acid CAS 2167579-29-3|6a-(Aminomethyl)-octahydrocyclopenta[b]pyrrol-2-one CAS 2227919-03-9|tert-butyl N-{1-[(3R)-3-hydroxybutyl]cyclobutyl}carbamate CAS 2228949-21-9|4-[1-(1-Aminoethyl)cyclopropyl]-2-methoxyphenol CAS 2229112-53-0|4-{Pyrazolo[1,5-a]pyrimidin-6-yloxy}piperidine CAS 2228547-04-2|2-Amino-2-(4-benzylmorpholin-2-yl)ethan-1-ol CAS 2229508-05-6|Tert-butyl 3-(2-chloro-6-hydroxyphenyl)piperazine-1-carboxylate CAS 2227905-99-7|(2S)-1-(3-chloro-2,4-difluorophenyl)propan-2-ol CAS 2229112-45-0|tert-butyl N-[3-(1-aminocyclohexyl)-4-hydroxyphenyl]carbamate CAS 2229423-61-2|2-(4-Amino-2-methylbutan-2-yl)-6-methoxyphenol CAS 2229619-41-2|tert-butyl N-[2-methyl-4-(pyrrolidin-2-yl)phenyl]carbamate CAS 2228375-93-5|3-amino-3-(1-methyl-1H-imidazol-2-yl)cyclobutan-1-ol CAS 2228270-22-0|1-(3-Ethoxy-4-methoxyphenyl)-4,4-difluorocyclohexan-1-amine CAS 2229508-00-1|1-(2-{[(Tert-butoxy)carbonyl]amino}-5-chlorophenyl)-2,2-difluorocyclopropane-1-carb CAS 2171918-18-4|1-cyclopropyl-5-(trifluoromethyl)-1H-1,2,3-triazole-4-carboxamide CAS 2229110-21-6|4-Bromo-3-(piperidin-2-yl)benzonitrile CAS 2229619-36-5|2-Bromo-6-[(3-methylazetidin-3-yl)oxy]phenol CAS 2227677-01-0|(3S)-3-hydroxy-3-(5-nitropyridin-2-yl)propanoic acid CAS 2228741-80-6|1-(4-Chloro-2-hydroxyphenyl)-2,2-dimethylcyclopropane-1-carboxylic acid CAS 2708094-24-8|3-Ethyl-4-fluoro-5-iodobenzaldehyde CAS 2171904-20-2|1-[2-(dimethylamino)ethyl]-5-(trifluoromethyl)-1H-1,2,3-triazole-4-carboxamide CAS 2227746-17-8|(2S)-4-(5-bromo-2,3-dimethoxyphenyl)butan-2-amine CAS 2228741-76-0|1-(2,6-Difluoro-4-methylphenyl)-3,3-difluorocyclobutan-1-amine CAS 1524718-17-9|4-[(5-Nitrothiophen-2-yl)methyl]piperidine CAS 2229423-57-6|Methyl 3-amino-2-{imidazo[1,2-a]pyridin-2-yl}propanoate CAS 2229534-49-8|5-(hydrazinylmethyl)-1-methyl-4-nitro-1H-pyrazole CAS 2227810-88-8|(3R)-3-(5-fluoro-2-methylphenyl)-3-hydroxypropanoic acid CAS 2228546-77-6|O-[1-(5-bromo-2-chloropyridin-3-yl)ethyl]hydroxylamine CAS 2229507-87-1|2-(2-Chloro-6-methylpyridin-3-yl)propanenitrile CAS 2228741-61-3|4-[(azetidin-3-yl)methyl]-1H-indole CAS 2229306-36-7|2-Bromo-3-(2,2-difluoro-1-hydroxyethyl)phenol CAS 2229112-32-5|2,2-Difluoro-2-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)ethan-1-amine CAS 2408970-43-2|(4-Methyl-2-(piperidin-1-yl)thiazol-5-yl)methanamine dihydrochloride CAS 2731006-44-1|4-bromo-1-(trifluoromethyl)-1H-imidazole-2-carbaldehyde CAS 2228546-65-2|3-Amino-2-(3-bromo-4-methylphenyl)-2-methylpropan-1-ol CAS 2229507-81-5|3-{[4-Methyl-3-(trifluoromethyl)phenyl]methyl}azetidine CAS 2731007-86-4|Tert-butyl 4-(dimethylamino)-4-formylpiperidine-1-carboxylate CAS 2228375-81-1|O-[2-(2,3-dihydro-1,4-benzodioxin-2-yl)propyl]hydroxylamine CAS 2229423-45-2|1-[4-(Methoxycarbonyl)thiophen-2-yl]cyclobutane-1-carboxylic acid CAS 2228270-04-8|1-{3-[(Difluoromethyl)sulfanyl]phenyl}-2,2-difluoroethan-1-one CAS 2227903-89-9|(1R)-2,2,2-trifluoro-1-(pyrimidin-2-yl)ethan-1-ol CAS 2228546-53-8|2-Methoxy-2-(3-methoxy-4-methylphenyl)propan-1-amine CAS 2228222-68-0|[1-(1-ethyl-2,3-dihydro-1H-indol-5-yl)cyclobutyl]methanol CAS 2228222-50-0|3-tert-butyl-4-(1-ethynylcyclopropyl)-1-methyl-1H-pyrazole CAS 2229306-31-2|2-[4-(Methoxycarbonyl)-5-methylfuran-2-yl]-3-methylbutanoic acid CAS 2229306-16-3|2-Amino-3-(4-methyl-3-nitrophenyl)propan-1-ol CAS 2227821-96-5|(2R)-4-[2-(morpholin-4-yl)-1,3-thiazol-5-yl]butan-2-amine CAS 2229534-27-2|tert-butyl N-[3-amino-2-(3-chloro-4-hydroxyphenyl)-2-methylpropyl]carbamate CAS 2228375-67-3|tert-butyl N-[4-(carbamimidoylmethyl)-2-chlorophenyl]carbamate CAS 2228075-22-5|tert-butyl (1S,4R)-5-(1-amino-2,2-dimethylcyclopropyl)-2-azabicyclo[2.1.1]hexane-2- CAS 2228222-15-7|2-(2-Methoxypyridin-4-yl)-2-methylpropan-1-ol CAS 2227716-72-3|rac-(1R,2R)-2-(2,4-dichloro-5-fluorophenyl)cyclopropane-1-carboxylic acid CAS 2229507-64-4|tert-butyl N-{3-fluoro-4-[1-(hydroxymethyl)-2,2-dimethylcyclopropyl]phenyl}carbamat CAS 2639423-62-2|2'-({[(Benzyloxy)carbonyl]amino}methyl)-[1,1'-biphenyl]-3-carboxylic acid CAS 2228269-57-4|2-[5-(2-Methylcyclopropyl)furan-2-yl]ethane-1-thiol CAS 2408957-51-5|Imidazo[1,5-a]pyridine-5-carboxylicacidhydrochloride CAS 2228375-45-7|2-Amino-2-(2-chloro-1,3-thiazol-5-yl)ethan-1-ol
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