Zinc L-Carnosine (Polaprezinc, CAS 107667-60-7) is a 1:1 chelated complex of zinc and the antioxidant dipeptide L-carnosine. With molecular formula C9H12N4O3Zn and a molecular weight of 289.6, it is one of the most studied ingredients in the gut-health category.
Why formulators choose the chelated complex
- Dual activity: L-carnosine contributes antioxidant capacity while zinc is delivered in a bioavailable, chelated form.
- Stable stoichiometry: the 1:1 complex is reproducible batch to batch, which matters for capsule and sachet blends.
- Clinical history: decades of gastrointestinal research support its use in stomach-comfort and mucosal-support formulas.
Main applications
- Gut health supplements: gastric comfort and mucosal support.
- Digestive wellness: stomach-support blends and daily digestive formulas.
- Immune support: zinc-delivery formulations.
- Sports nutrition: GI comfort during heavy training blocks.
- Veterinary nutrition: animal gut-health applications.
Specification snapshot
- CAS: 107667-60-7 · Formula: C9H12N4O3Zn · MW: 289.6
- Appearance: white to off-white crystalline powder
- Solubility: sparingly soluble in water; practically insoluble in organic solvents
- Zinc content: typically ≥22% · Purity: HPLC ≥98%
Formulation notes
Because the complex is only sparingly water-soluble, it is usually positioned in capsules, tablets and powder blends rather than clear beverages. Where a clear drink is required, suspension or solubilisation systems should be evaluated first.
FAQ
Is zinc L-carnosine the same as zinc plus L-carnosine? No. Polaprezinc is a defined 1:1 chelate, not a physical blend.
What purity is available in bulk? HPLC ≥98%, with zinc content typically ≥22%; batch COA confirms the actual values.
Zinc L-Carnosine (Polaprezinc, CAS 107667-60-7)
Aogubio Co., Ltd (Imaherb) is a GMP-certified manufacturer of bulk cosmetic and supplement ingredients. Every batch ships with COA, MSDS and heavy metal test reports.