SPECIFICATION
| Appearance | White or almost white, crystalline powder or colourless crystals, hygroscopic. |
| PH | 5.5 – 9.5 |
| Specific optical rotation | −29.0° to −32.0° |
| Chlorides | ≤0.4% |
| Lead | ≤1ppm |
| Potassium | ≤0.2% |
| Sodium | ≤0.1% |
| Water | ≤4.0% |
| Sulfated ash | ≤0.5% |
| Assay | 97.0% – 103.0% (anhydrous substance) |
MOLECULAR STRUCTURE：
Molecular Formula: C7H15NO3
