CAS No:5593-20-4
Shelf life:2 years
Packaging and storage: Preserve in tight, light-resistant containers
The detailed specifications are as below:
| Items | Standard |
| Description | White or almost white crystalline powder |
| Solubility | practically insoluble in water, freely soluble in acetone and in methylene chloride, sparingly soluble in ethanol |
| Identification (IR,TLC) | complies with the Standard |
| Specific rotation (In dioxane) | +63°～+70° |
| Loss on drying | Not more than 1.0% |
| Residue on ignition | Not more than 0.2% |
| Related substances (HPLC) | |
| -Single impurity | Not more than 1.0% |
| -Sum impurities | Not more than 2.0% |
| Residue of solvents | |
| Acetone | Not more than 5000ppm |
| Methanol | Not more than 3000ppm |
| Chloroform | Not more than 60ppm |
| 1,4-dioxane | Not more than 380ppm |
| Pyridine | Not more than 200ppm |
| Particle size | 90%≤30um |
| Assay(HPLC,basis on drying) | 97.0%～103.0% |