Under the brand name
Mecysteine, cysteine methyl ester is a commercial drug for
mucolytic activity. The compound has an ability to break down or lower the viscosity of mucin-containing secretions or components of fluids by chronic and acute respiratory disorders. The drug is sold under the commercial names Delta in Paraguay, and Pectite and Zeotin in Japan. Cysteine methyl ester is also used as a building block for synthesis of N,S-
heterocycles. == References ==