Cysteamine
Skeletal formula (top) Ball-and-stick model of the cysteamine | |
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| Trade names | Cystagon, Procysbi, Cystaran, others |
| Other names | 2-Aminoethanethiol, β-Mercaptoethylamine, 2-Mercaptoethylamine, decarboxycysteine, thioethanolamine, mercaptamine bitartrate, cysteamine (USAN US) |
| AHFS/Drugs.com | Micromedex Detailed Consumer Information |
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| Routes of administration | By mouth, eye drops |
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| ECHA InfoCard | 100.000.421 |
| Chemical and physical data | |
| Formula | C2H7NS |
| Molar mass | 77.15 g·mol−1 |
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| Melting point | 95 to 97 °C (203 to 207 °F) |
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Cysteamine is an organosulfur compound with the formula HSCH2CH2NH2. A white, water-soluble solid, it contains both an amine and a thiol functional group. It is often used as the salt of the ammonium derivative [HSCH2CH2NH3]+, including the hydrochloride, phosphocysteamine, and the bitartrate. The intermediate pantetheine is broken down into cysteamine and pantothenic acid.
It is biosynthesized in mammals, including humans, by the degradation of coenzyme A. It is the biosynthetic precursor to the neurotransmitter hypotaurine.