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 2755724-67-3|2,2-Dichloro-1-(2,4-dimethoxyphenyl)ethanol CAS 2229495-40-1|2-(2-Fluoro-1-hydroxyethyl)-6-methoxyphenol CAS 16865-12-6|4,7-Dibromo-2,5,6-trichloro-1H-benzimidazole CAS 2023906-32-1|4-hexyl-4-methyl-4H,5H,6H,7H-furo[3,2-c]pyridine CAS 2172443-74-0|tert-butyl 4-chloro-2-cyclopropyl-5H,8H,9H-pyrimido[4,5-b]azepine-9-carboxylate CAS 174658-23-2|4-Amino-3-[(3-chloropropyl)thio]benzonitrile CAS 2680853-22-7|tert-butyl N-(5,6-difluoropyridin-3-yl)carbamate CAS 2680611-55-4|Tert-butyl 2-amino-2-(1-methoxycyclopentyl)acetate CAS 2228656-65-1|5-[1-methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl]-1H-imidazol-2-amine CAS 2171672-00-5|4-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-2-methylbutanoyl}morpholin CAS 2014827-05-3|4-(3-ethylpentan-3-yl)-4H,5H,6H,7H-furo[3,2-c]pyridine CAS 916263-22-4|5-(2-Bromo-5-methoxyphenyl)-1,3-benzodioxole CAS 2228423-48-9|2-Methyl-1-(4-methyloxan-4-yl)propan-2-ol CAS 2228952-01-8|1-Amino-3-(4-methyloxan-4-yl)propan-2-ol CAS 2001908-04-7|6,7-dihydro-5H-spiro[furo[3,2-c]pyridine-4,3'-oxane] CAS 2137679-22-0|3-Methyl-5-propyl-1,2-oxazole-4-carbaldehyde CAS 2674163-64-3|6-Bromo-2-oxo-1,2-dihydroquinolin-4-yl trifluoromethanesulfonate CAS 2137895-75-9|2-[Ethyl({[2-(propan-2-yl)phenyl]methyl})amino]ethan-1-ol CAS 2138337-00-3|1-[(3-Aminocyclopentyl)methyl]-3-(2-methylpropyl)urea CAS 1856283-07-2|1-[3-(Aminomethyl)cyclopentyl]-3-butylurea CAS 2648996-79-4|N-(4-methoxy-2-nitrophenyl)-4,5-dihydro-1H-imidazol-2-amine CAS 2305022-76-6|Rue596TD9Y CAS 2550288-12-3|8EX8Cpd5NX CAS 2739982-86-4|W4P65U6Hwd CAS 2137678-98-7|4-{4H,5H,6H,7H-pyrazolo[1,5-a]pyrimidin-3-yl}aniline CAS 72272-76-5|[3H]methyltrienolone CAS 2435544-20-8|tert-Butyl 4-fluoro-2-methyl-5-nitrobenzoate CAS 2137077-58-6|(1S)-2-methoxy-1-[1-(2-methoxyethyl)-1H-1,2,3-triazol-5-yl]ethan-1-ol CAS 2137427-34-8|2-{5-[(1R)-1-hydroxy-2-methoxyethyl]-1H-1,2,3-triazol-1-yl}propan-1-ol CAS 2137056-78-9|(1S)-1-(1-tert-butyl-1H-1,2,3-triazol-5-yl)-2-methoxyethan-1-ol CAS 2138336-54-4|1-[1-(cyclopropylmethyl)-1H-1,2,3-triazol-5-yl]-2-methoxyethan-1-ol CAS 2138336-49-7|2-methoxy-1-[1-(propan-2-yl)-1H-1,2,3-triazol-5-yl]ethan-1-ol CAS 2137066-42-1|(1S)-1-(1-cyclopropyl-1H-1,2,3-triazol-5-yl)-2-methoxyethan-1-ol CAS 2137056-67-6|2-(3-{5-[(1S)-1-hydroxy-2-methoxyethyl]-1H-1,2,3-triazol-1-yl}propyl)-2,3-dihydro-1 CAS 2137633-30-6|5-(But-3-yn-1-yl)-1,2,3,6-tetrahydropyridin-3-ol CAS 2138174-20-4|5-(Methoxymethyl)-1,2,3,6-tetrahydropyridin-3-ol CAS 2137633-26-0|5-Cyclohexyl-1,2,3,6-tetrahydropyridin-3-ol CAS 2138336-31-7|5-(2-methyl-2H-1,2,3-triazol-4-yl)-1,2,3,6-tetrahydropyridin-3-ol CAS 2137678-28-3|5-(1-methyl-1H-pyrazol-4-yl)-1,2,3,6-tetrahydropyridin-3-ol CAS 2138174-12-4|5-(Pyridin-3-yl)-1,2,3,6-tetrahydropyridin-3-ol CAS 2138336-21-5|3-chloro-5-[1-(propan-2-yl)-1H-1,2,3-triazol-5-yl]-1,2,3,6-tetrahydropyridine CAS 2138336-16-8|3-Chloro-5-[(1,3-thiazol-4-yl)methyl]-1,2,3,6-tetrahydropyridine CAS 2174927-22-9|Methyl (S)-2-amino-3-(4,4-difluorocyclohexyl)propanoate hydrochloride CAS 96062-48-5|1,10-Phenanthroline, 3,8-diethyl-5,6-dimethyl- CAS 2138145-18-1|Sodium 2,4-dichloro-5-nitrobenzene-1-sulfinate CAS 2137887-54-6|3-Chloro-5-(4-methoxycyclohexyl)-1,2,3,6-tetrahydropyridine CAS 2138336-00-0|3-Chloro-5-[(oxan-3-yl)methyl]-1,2,3,6-tetrahydropyridine CAS 2138241-02-6|3-chloro-5-[(4-methyl-4H-1,2,4-triazol-3-yl)methyl]-1,2,3,6-tetrahydropyridine CAS 2137633-16-8|3-chloro-5-[(1,5-dimethyl-1H-pyrazol-4-yl)methyl]-1,2,3,6-tetrahydropyridine CAS 1860459-61-5|N-[3-(aminomethyl)cyclopentyl]-3-methoxypropanamide CAS 2137887-37-5|[(3,5-Dichlorophenyl)methyl][(3-fluoro-4-methylphenyl)methyl]amine CAS 2137627-81-5|3-(Bromomethyl)-3-(oxolan-2-yl)oxolane CAS 2138335-85-8|3-(2,4,6-Trifluorophenyl)pyrazolo[1,5-a]pyrimidine CAS 2138260-47-4|1-({1,1-Dioxo-octahydro-1lambda6-thiopyrano[2,3-c]pyrrol-4a-yl}methyl)-3-ethylurea CAS 2137677-88-2|4a-(aminomethyl)-N-(2-methoxyethyl)-1,1-dioxo-octahydro-1lambda6-thiopyrano[2,3-c]p CAS 2137811-46-0|4a-(aminomethyl)-N-ethyl-1,1-dioxo-octahydro-1lambda6-thiopyrano[2,3-c]pyrrole-6-ca CAS 2137737-36-9|4a-(Aminomethyl)-6-(1-methylcyclopropanecarbonyl)-octahydro-1lambda6-thiopyrano[2,3 CAS 2138260-38-3|N-({1,1-dioxo-octahydro-1lambda6-thiopyrano[2,3-c]pyrrol-4a-yl}methyl)-2-methylprop CAS 2137811-29-9|N-({1,1-dioxo-octahydro-1lambda6-thiopyrano[2,3-c]pyrrol-4a-yl}methyl)-2-methoxyace CAS 1237119-23-1|4-Cyclopropyl-2-methoxybenzamide CAS 2227669-04-5|(2S)-1-[2-(morpholin-4-yl)-1,3-thiazol-5-yl]propan-2-amine CAS 2172034-99-8|6-tert-butyl-3-[(ethylamino)methyl]-1-methyl-1H-indole-2-carbonitrile CAS 2171889-67-9|5-fluoro-1-methyl-3-{[(propan-2-yl)amino]methyl}-1H-indole-2-carbonitrile CAS 2172534-17-5|1-(1-Hydroxy-2-methylbutan-2-yl)-3,3-dimethylcyclohexan-1-ol CAS 2229529-42-2|4-Bromo-1,1,1,2-tetrafluoropentane CAS 2172038-27-4|1-Ethyl-4-(1-hydroxy-2-methylbutan-2-yl)piperidin-4-ol CAS 2171913-20-3|2-[1-Hydroxy-3-(propan-2-yl)cyclohexyl]-2-methylbutanoic acid CAS 2229150-02-9|2-Methoxy-3-(2-methyl-6-nitrophenyl)propanoic acid CAS 2229345-60-0|O-{2-[2-(propan-2-yl)phenyl]propyl}hydroxylamine CAS 2228816-80-4|2-(3-Amino-2-hydroxypropyl)-4,6-difluorophenol CAS 2769718-12-7|5,7-dichloro-3-methyl-1H-Pyrazolo[3,4-c]pyridine CAS 2228680-17-7|1-[1-(5-Methoxy-2-nitrophenyl)cyclopropyl]ethan-1-one CAS 2229488-84-8|3-Hydroxy-3-(2-methyl-5-nitrophenyl)propanenitrile CAS 2649082-66-4|1-Chloro-2,4-difluoro-3-isocyanatobenzene CAS 1957285-13-0|Tert-butyl 4-(3-chlorophenyl)-3-methylpiperazine-1-carboxylate CAS 2227767-29-3|(2R)-5-cyclopentylpentan-2-amine CAS 2228112-09-0|2-methyl-4-(5-methyl-1H-pyrazol-3-yl)butan-2-amine CAS 75487-60-4|2-(2-Benzofuranyl)-1-methyl-1H-benzimidazole CAS 1516002-43-9|3-(2-Methylfuran-3-yl)butan-1-amine CAS 2228603-86-7|2-[1-(2-Methylfuran-3-yl)cyclopropyl]ethan-1-amine CAS 2248398-97-0|1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 5-ethyl-1-(4-methoxyphenyl)-1H-pyrazole-4-ca CAS 2227773-29-5|(2R)-1-(quinolin-3-yl)propan-2-ol CAS 2228680-24-6|Methyl 2-[2-(1-hydroxycyclopropyl)ethyl]benzoate CAS 2228382-56-5|1-(2-Fluoro-3-nitrophenyl)-2-(methylamino)ethan-1-ol CAS 2228854-40-6|2-(1-{3H-[1,2,3]triazolo[4,5-b]pyridin-6-yl}cyclopropyl)propan-2-amine CAS 2228816-68-8|4-(1-methyl-1H-indol-5-yl)oxane-2,6-dione CAS 2228382-88-3|1-amino-3-[2-(1H-pyrazol-1-yl)phenyl]propan-2-ol CAS 2110790-52-6|2-(1,3-Thiazol-5-yl)propanenitrile CAS 2248287-31-0|1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl 1-(2-methoxyphenyl)-6-oxopiperidine-3-carbox CAS 1998115-61-9|(2R)-2-amino-5-(oxolan-3-yl)pentanoic acid CAS 2172263-54-4|2-Methoxy-2-(4-methyl-1,3-thiazol-5-yl)ethan-1-amine CAS 2229577-80-2|5-(2-Phenylpropan-2-yl)-1,2-oxazol-3-amine CAS 2227977-68-4|(2R)-5-methyloctan-2-ol CAS 2680784-18-1|benzyl N-[3-(3-fluoro-4-methylbenzoyl)-4H,5H,6H-cyclopenta[b]thiophen-2-yl]carbamat CAS 2680864-32-6|3-(5-{[(benzyloxy)carbonyl]amino}-4-(ethoxycarbonyl)-1H-pyrazol-1-yl)benzoic acid CAS 1864500-02-6|2-[2-Amino-1-(1,2,3-thiadiazol-4-yl)ethoxy]ethan-1-ol CAS 2172124-53-5|2-(3,3-Difluorocyclobutyl)-2-methoxypropan-1-amine CAS 2138412-86-7|[4-cyclopropyl-1-(propan-2-yl)-1H-pyrrol-3-yl]methanol CAS 15328-39-9|4-[5-(3-Methylphenyl)-1,3,4-thiadiazol-2-yl]pyridine CAS 2680549-98-6|2-(2,2,2-Trifluoroacetyl)-decahydroisoquinoline-1-carboxylic acid
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