S-Carboxymethyl-L-Cysteine(S-CMC), chemical formula : C5H9NO4S

S-Carboxymethyl-L-Cysteine (S-CMC) is a modified form of the amino acid L-cysteine, with the chemical formula C5H9NO4S. It is created by carboxymethylation of L-cysteine, enhancing its solubility and stability. S-CMC is known for its mucolytic properties, helping to break down mucus and make it easier to expel from the respiratory tract. This makes it valuable in treating respiratory conditions such as bronchitis and chronic obstructive pulmonary disease (COPD). Additionally, S-CMC is studied for its antioxidant effects and its ability to protect lung tissue from damage caused by oxidative stress. It is water-soluble and used in pharmaceutical formulations to support respiratory health. Proper storage in a cool, dry place away from direct sunlight ensures its effectiveness in medical applications.