SPECIFICATION
| Appearance | White or almost white crystalline powder or colourless needles |
| Appearance of solution | Clear and colorless |
| Assay | 98.0-102.0% |
| Specific optical rotation | +18.2°- +19.4° |
| Heavy metals | ≤10ppm |
| Iron | ≤5ppm |
| Loss on drying | ≤0.1% |
| Residue on ignition | ≤0.05% |
| Chromatographic purity | Any individual impurity ≤1.0% |
| Total impurities | ≤2.0% |
MOLECULAR STRUCTURE：
Molecular Formula:C5H10O5
