Cysteamine is the chemical compound with the formula HSCH2CH2NH2. It is the simplest stable aminothiol and a degradation product of the amino acid cysteine. It is often used as the hydrochloride salt, HSCH2CH2NH3Cl. The comparatively high melting point of cysteamine (95-97 °C), indicates that it exists in a salt form.
It can also be prepared by the reaction of ethylenimine with hydrogen sulfide.〔
:(NHCH2CH2) + H2S → HSCH2CH2NH2
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』