L-Cystine

Molecular formula

Description

White crystalline powder; Molecular Formula: C₆H₁₂N₂O₄S₂; Molecular Weight: 240.30; CAS No.: 56-89-3; Two cysteine molecules linked by a disulfide bond, abundant in hair/keratin, antioxidant properties.

Main Applications

L-Cystine is formed from two L-cysteine molecules joined by a disulfide bond and is naturally abundant in hair and keratin, which explains its well-established role in sports nutrition and personal-care formulations targeting hair care, skin care and antioxidant support. Owing to its functional properties, it is also utilized in the food industry as a dough conditioner and flavoring agent, and serves as an active ingredient in pharmaceutical expectorant preparations.