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Specifications of the NF
| Parameter | Specification |
|---|---|
| Appearance | White to pale yellow‐white crystalline powder |
| Chemical composition | |
| Zinc l‐Carnosine (DM)( a ) | 98.0–102.0% |
| Zinc (DM)( a ) |
21.5–23.0% |
| Water | ≤ 5% |
| Optical rotation [α]D (c 2, 3N HCl) (DM) | +8° to +9° |
| l‐Histidine | ≤ 2% |
| Other impurities | ≤ 0.1% |
| Total other impurities | ≤ 1% |
| Microbiological | |
| Total aerobic microbial count | ≤ 1,000 CFU/g |
| Total yeast/mould count | ≤ 100 CFU/g |
DM: Dry matter (calculated as dry matter).
