Payment: T/T, L/C Product Origin: China Shipping Port: Beijing/Shanghai/Hangzhou Production capacity: 50kg/month Order(MOQ): 25kg Lead Time: 3 Working Days Storage condition: Stored in cool, dry place, room temperature. Package material: drum Package size: 25kg/drum Safety information: Not dangerous goods| Item | Specification |
| Appearance | Light cream-colored to light tan crystalline powder. |
| Solubility (annual) | Freely soluble in benzene and in chloroform; soluble in ethyl acetate and in alcohol; slightly soluble in methanol and in fiexed oils; practically insoluble in water. |
| Identification | Infrared Absorption: meets the requirement |
| HPLC: meets the requirement | |
| Limit of mercapto compounds | ≤0.10mL of 0.010N iodine is consumed |
| Organic impurities | Related compound B ≤0.2% |
| Related compound A ≤0.2% | |
| Related compound C ≤0.2% | |
| Related compound D ≤0.3% | |
| Epimer ≤0.3% | |
| Related compound I ≤0.1% | |
| Any unspecified impurity ≤0.10% | |
| Total impurities ≤1.0% | |
| Optical rotation | -41°~ -45° |
| Loss on drying | ≤0.5% |
| Residual solvents (In-house) | Methanol ≤3000ppm |
| Tetrahydrofuran ≤720ppm | |
| DMF ≤880ppm | |
| Particle size (In-house) | 95% not more than 20 microns |
| Assay | 97.0% ~103.0% on the dried basis |