Description
L-Hydroxyproline COA — 99% Purity Specification
| Test Parameter | Specification |
|---|---|
| Product Name | L-Hydroxyproline |
| Chemical Name | trans-4-Hydroxy-L-proline |
| CAS No. | 51-35-4 |
| Molecular Formula | C₅H₉NO₃ |
| Molecular Weight | 131.13 g/mol |
| Appearance | White crystalline powder |
| Identification | Conforms |
| Assay | 98.5–101.0% |
| Specific Rotation [α]D²⁰ | −74.0° to −77.0° |
| pH | 5.0–6.5 |
| Loss on Drying | ≤0.50% |
| Residue on Ignition | ≤0.10% |
| Chloride | ≤0.05% |
| Sulfate | ≤0.03% |
| Iron (Fe) | ≤10 ppm |
| Heavy Metals | ≤10 ppm |
| Lead (Pb) | ≤3 ppm |
| Arsenic (As) | ≤1 ppm |
| Cadmium (Cd) | ≤1 ppm |
| Mercury (Hg) | ≤0.1 ppm |
| Total Plate Count | ≤1,000 CFU/g |
| Yeast & Mold | ≤100 CFU/g |
| E. coli | Absent |
| Salmonella | Absent |
| Storage | Store in a cool, dry place in a tightly closed container |
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