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 2228602-88-6|5-(3,5-difluoropyridin-4-yl)-1-methyl-1H-pyrazol-4-amine CAS 2246855-72-9|2-((3-(Benzyloxy)cyclobutylidene)methyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane CAS 2139662-88-5|(4-Bromo-3-chlorophenyl)methyl 4-methylbenzene-1-sulfonate CAS 2159729-39-0|(3-Bromo-4-chlorophenyl)methyl 4-methylbenzene-1-sulfonate CAS 2229264-82-6|1-Amino-3-[2-(propan-2-yloxy)phenyl]propan-2-ol CAS 2227841-58-7|rac-[(1R,2R)-2-[2-(propan-2-yloxy)phenyl]cyclopropyl]methanamine CAS 2229306-19-6|Methyl 6-(1-amino-2-hydroxypropan-2-yl)pyridine-3-carboxylate CAS 2229236-79-5|3-(4-Cyanothiophen-2-yl)-2,2-dimethylpropanoic acid CAS 2757961-66-1|1-((2R,3R,4S,5R)-3,4-Dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-1H-pyrazole-3 CAS 2229379-48-8|3-(2,5-Dimethylthiophen-3-yl)-1,2-oxazol-5-amine CAS 2229310-44-3|2-Methoxy-3-(4-methylpyrimidin-5-yl)propanoic acid CAS 2228584-86-7|[2,2-Dimethyl-1-(4-methylpyrimidin-5-yl)cyclopropyl]methanol CAS 2229588-28-5|[2,2-Dimethyl-1-(4-methylpyrimidin-5-yl)cyclopropyl]methanamine CAS 2229185-09-3|3-(4-Methylpyrimidin-5-yl)but-3-en-1-amine CAS 2228399-27-5|3-{[2-(Methylsulfanyl)phenyl]methyl}pyrrolidin-3-ol CAS 2228753-38-4|2-Methyl-2-(thian-3-yl)oxirane CAS 2228772-51-6|1-amino-5-(1H-1,2,4-triazol-1-yl)pentan-3-ol CAS 2228602-86-4|methyl 5-(1-amino-2-methylpropan-2-yl)-1-methyl-1H-pyrrole-2-carboxylate CAS 2228861-25-2|methyl 5-(3-aminobutyl)-1-methyl-1H-pyrrole-2-carboxylate CAS 2228144-72-5|2-Cyclopropyl-4-(1-ethynylcyclopropyl)-1,3-thiazole CAS 2228290-06-8|methyl 5-(2-amino-2-methylpropyl)-1-methyl-1H-pyrrole-2-carboxylate CAS 2228830-42-8|2-Amino-3-(2,6-dimethylphenyl)-2-methylpropan-1-ol CAS 2227967-36-2|rac-(1R,3S)-3-(2,2-dimethylthiolan-3-yl)-2,2-dimethylcyclopropan-1-amine CAS 2228376-65-4|1-(3,3-Dimethylcyclohexyl)cyclobutane-1-carboxylic acid CAS 2229163-03-3|4-(2,2-Dimethylthiolan-3-yl)pyrrolidin-2-one CAS 2227951-81-5|(2S)-2-(2,2-dimethylthiolan-3-yl)oxirane CAS 2757927-99-2|3-Cyclopropyl-2,2-difluoropropyl 4-methylbenzene-1-sulfonate CAS 2229526-51-4|Methyl 3-(5-amino-1,2-oxazol-3-yl)thiophene-2-carboxylate CAS 2228598-76-1|1-(Isoquinolin-5-yl)cyclopropane-1-carbaldehyde CAS 2229212-01-3|3-(But-3-yn-1-yl)imidazo[1,2-a]pyrazine CAS 2229650-20-6|4-{5-[(Dimethylamino)methyl]-1,3-thiazol-2-yl}but-3-en-2-amine CAS 2172566-30-0|2-(2-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-3,3,3-trifluoropropanam CAS 2172475-00-0|2-{[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]methyl}-3,3,3-trifluor CAS 2172100-90-0|2-{[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]methyl}-3,3,3-trifluoro CAS 2172569-33-2|3-[N-ethyl-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4,4-difluorobutanamido]but CAS 2172607-47-3|4-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4,4-difluorobutanamido]-2-methylbu CAS 2171360-07-7|(2S)-3-cyclopropyl-2-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4,4-difluorobut CAS 2171928-66-6|(1RS&,2SR&)-2-[(1RS,3SR)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclo CAS 2172169-35-4|(2RS,3SR)-3-[(1RS&,3SR&)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclo CAS 2227791-30-0|(2R)-2-{[(1RS,3SR)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexyl]formamid CAS 2227936-58-3|rac-3-[(1R,3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexanecarbonyl]-1, CAS 2228045-64-3|rac-4-[(1R,3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexanecarbonyl]mor CAS 2228054-99-5|rac-3-{[(1R,3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexyl]formamido}b CAS 2172452-93-4|1-(1-Amino-2-methylcyclopropyl)-4-(2-methylbutan-2-yl)cyclohexan-1-ol CAS 2227738-51-2|(2S)-3-cyclopropyl-2-{[(1RS,3SR)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclo CAS 2227924-87-8|rac-(1R,3S)-3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]cyclohexane CAS 2227963-63-3|rac-(1R,3S)-3-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]cyclohexane- CAS 2137870-33-6|Ethyl 6-aminobicyclo[3.2.0]heptane-3-carboxylate CAS 2172001-21-5|2-(1-{3-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]cyclohexyl}-N-(propan-2- CAS 2228013-63-4|rac-3-[(3R,5R)-5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxolane-3-carbo CAS 2227775-01-9|rac-2-({[(3R,5R)-5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxolan-3-yl]f CAS 2172238-44-5|1-{5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxolane-3-amido}cyclobutane CAS 2171930-53-1|2-(N-cyclopropyl-1-{5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxolan-3-y CAS 2172454-93-0|4-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2,2,4-trimethylpentanamido]-3-hydr CAS 2171443-53-9|3-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylbutanamido]-2,2,4-tri CAS 2172215-44-8|3-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylbutanamido]-2,2,4-trimethy CAS 2648915-27-7|(2S)-1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2,2,4-trimethylpentanoyl]pyrr CAS 2171707-73-4|3-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2,2,4-trimethylpentanoyl]-1,3-thia CAS 2172040-14-9|2-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2,2,4-trimethylpentanamido]-2-meth CAS 955997-28-1|(I+/-S)-I+/--(2,2-Dimethylpropyl)benzeneethanol CAS 2228300-01-2|2-[2-(Propan-2-yl)-1,3-thiazol-4-yl]prop-2-enoic acid CAS 2324090-30-2|Methyl (S)-4-bromo-2-((1,1,1-trifluoropropan-2-yl)oxy)benzoate CAS 2817669-24-0|(S)-3-(Trifluoromethyl)-5,6,7,7a,8,9,10,11-octahydropyrazino[1,2-d]pyrido[3,2-b][1, CAS 2228321-70-6|O-[1-(3,3-dimethylcyclopentyl)ethyl]hydroxylamine CAS 2817674-44-3|4-(Dimethylphosphoryl)-5-hydroxy-2-(4-methoxybenzyl)pyridazin-3(2H)-one CAS 2228321-55-7|3-Fluoro-3-(3-nitrophenyl)propan-1-amine CAS 54410-64-9|Nitrous acid, 3-phenylpropyl-1,1-d2 ester CAS 2138212-66-3|sodium 3-oxo-3,4-dihydro-2H-1,4-benzoxazine-7-sulfinate CAS 2708287-84-5|6,6-Dimethyl-4-azaspiro[2.4]heptane hcl CAS 2560586-04-9|2-(Tributylstannyl)-5-(trifluoromethyl)pyrimidine CAS 2137758-18-8|1-(2-Aminoethyl)-3-(aminomethyl)cyclohexan-1-ol CAS 2228689-44-7|2-(1-Amino-2-methoxypropan-2-yl)-4-chlorophenol CAS 1877079-81-6|6-Phenyl-1-oxaspiro[2.5]octane-2-carbonitrile CAS 2817674-71-6|tert-Butyl (R)-3-(mercaptomethyl)piperazine-1-carboxylate CAS 2137559-07-8|5-(3-Methyl-1,2,4-thiadiazol-5-yl)-2-nitropyridine CAS 2817668-87-2|Methyl 2,6-dichloro-5-(trifluoromethyl)nicotinate CAS 2229308-60-3|2,2-Dimethyl-3-(1-phenylcyclopropyl)propan-1-ol CAS 2138191-33-8|N-ethyl-4-(piperazin-2-yl)aniline CAS 2137737-59-6|5-Bromo-1-methoxy-2-(propan-2-yl)pentane CAS 2005347-08-8|2-(Bromomethyl)-2-(pent-4-en-1-yl)oxolane CAS 2137628-18-1|1-(2-Bromoethyl)-3-methoxycyclohexane CAS 2138131-20-9|2-(1-Chloropentan-2-yl)oxane CAS 2228722-14-1|1-[2-(1,3-Oxazol-5-yl)ethyl]cyclopropan-1-ol CAS 2137599-15-4|N-methyl-5,6,7,8-tetrahydroquinoline-6-sulfonamide CAS 1865120-00-8|1-[2-(Bromomethyl)butyl]-1-methylcyclopentane CAS 2228570-34-9|3-Ethoxy-4-hydroxybenzene-1-sulfonamide CAS 2171184-98-6|1-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanoyl]-1H,2H,3H-pyrazolo[1 CAS 2229618-64-6|2-Bromo-6-(2-chloro-1-hydroxyethyl)phenol CAS 2171250-91-0|2-[(2R)-1-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylbut-2-enoyl]pyrrol CAS 2228364-25-6|1-[1-(Isoquinolin-5-yl)cyclopropyl]cyclopropan-1-amine CAS 2227962-66-3|rac-2-({[(3R,5R)-5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxolan-3-yl]f CAS 2172160-96-0|9-(1,2-Thiazol-3-yl)-5-oxa-8-azaspiro[3.5]nonane CAS 2227982-20-7|rac-3-{[(2R,3R)-3-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxolan-2-yl]fo CAS 1179806-74-6|(3R,4R)-3-Hexyl-4-[(2S)-2-hydroxypentadecyl]-2-oxetanone CAS 2171972-07-7|2-(3,5-Dimethyl-1,2-oxazol-4-yl)-1-propylpyrrolidin-3-amine CAS 2171196-89-5|(1R)-1-(3-methyl-1-phenyl-1H-pyrazol-5-yl)ethan-1-amine CAS 2171590-29-5|4-Amino-5-(2,5-dimethylpyrazol-3-yl)-1-propan-2-ylpyrrolidin-2-one CAS 1637678-21-7|Tert-butyl 3-ethenyl-3-fluoropiperidine-1-carboxylate CAS 2228310-64-1|tert-butyl N-[2-(aminomethyl)-2,4,4-trimethylpentyl]carbamate CAS 2228245-49-4|3-(5,6,7,8-Tetrahydronaphthalen-1-yl)azetidine
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