| Items | Specification |
| Appearance |
White or almost white crystalline powder
crystalline granular powder |
| Identification | Positive |
| Appearance of Solution | Meets the requirements |
| Acidity | 3.0--4. 5 |
| Specific Optical Rotation | -121° -- -128° |
| Related Substances | Meets the requirements |
| Heavy Metals | ≤ 0.002% |
| Loss on Drying | ≤ 0.5% |
| Sulphated Ash | ≤ 0.1 |
| Assay | 99.6% |
| Standand | BP2000/EP5.0 |