SPECIFICATION
| Appearance | White crystals or a crystalline powder |
| Identification | Infrared absorption |
| Assay | 98.5-101.5% |
| Residue on ignition | ≤0.3% |
| Chloride | ≤0.05% |
| Sulfate | ≤0.03% |
| Iron | ≤30ppm |
| Heavy metals | ≤15ppm |
| Lead | ≤5ppm |
| Related substances (TLC) | Any impurity ≤ 0.5% |
| Specific rotation | +6.3°- +7.3° |
| Loss on drying | ≤0.3% |
MOLECULAR STRUCTURE：
Molecular Formula:C5H10N2O3
