Mecysteine

• CAT Number: I031854
• CAS Number: 2485-62-3
• Molecular Formula: C4H9NO2S
• Molecular Weight: 135.18
• Purity: 98%
• Synonyms: Acthiol J; Cysteine methyl ester; L-Cysteine, methyl ester; Mecysteine; Methyl ester of cysteine
• Solubility: To be determined
• Appearance: Solid powder
• Storage: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).
• IUPAC Name: Cysteine, methyl ester, L-
• InChI: InChI=1S/C4H9NO2S/c1-7-4(6)3(5)2-8/h3,8H,2,5H2,1H3/t3-/m0/s1
• InChIKey: MCYHPZGUONZRGO-VKHMYHEASA-N
• SMILES: COC(=O)[C@@H](N)CS

Mecysteine (Cat No.: I031854) is a mucolytic agent and cysteine derivative used to treat respiratory conditions involving excessive or thick mucus, such as chronic bronchitis and chronic obstructive pulmonary disease (COPD). It works by breaking down disulfide bonds in mucus glycoproteins, reducing mucus viscosity and facilitating expectoration. Mecysteine also exhibits mild antioxidant properties, helping to protect respiratory tissues from oxidative stress. It is typically administered orally and is valued for improving airway clearance, easing breathing, and enhancing patient comfort in mucus-related respiratory disorders.

Reference

1. Erdosteine for COPD exacerbations. Drug Ther Bull. 2008 Oct;46(10):79-80. doi: 10.1136/dtb.2008.09.0024. PMID: 18832259.