1. Understanding Zinc Carnosine: A Primer for Global Trade Zinc carnosine (CAS 107667-60-7), also known scientifically as Polaprezinc, is a stable chelated compound formed by binding a zinc ion to L‑carnosine, a dipeptide composed of β‑alanine and L‑histidine. This combination is not a simple mixture but a distinct molecule, containing approximately 23% zinc and 77% L‑carnosine by mass. It is a white to slightly off‑white powder with a molecular formula of C₉H₁₂N₄O₃Zn and a molecular weight of approximately 288.60 g/mol. For over three decades, this compound has been the subject of extensive clinical research, primarily for its ability to support mucosal integrity, protect the stomach lining, and promote the healing of…