A sulfur - containing essential amino acid, C5H11NO2S, obtained from various proteins or prepared synthetically and used as a dietary supplement and in pharmaceuticals.

• 蛋氨酸一种含磷的主要的氨基酸，C5H11NO2S，由多种蛋白质中获取或用合成方法形成，用作一种饮食的补充，并用于药剂学