Payment: T/T, L/C Product Origin: China Shipping Port: Beijing/Shanghai/Hangzhou Order (MOQ): 1kg Lead Time: 3 working days Production capacity: 30kg/month Storage condition: Stored in cool, dry place, room temperature. Package material: bottle Package size: 1kg/bottle Safety information: Not dangerous goods| Item | Specification |
| Appearance | White or off-white powder |
| Identification | Infrared spectroscopy |
| The retention times of the major peaks of the Sample solution correspond to those of the Standard solution, as obtained in the Assay. | |
| Residue on ignition | ≤0.5% |
| Organic impurities | 11’-Desmethylmibemycin A4 oxime ≤0.7% |
| (20’R)-Hydroxymilbemycin A4 keto form ≤0.5% | |
| Milbemycin A4 keto form ≤0.7% | |
| Milbemycin D-oxime ≤3.0% | |
| Any other individual impurity ≤0.5% | |
| Total impurities ≤3.5% | |
| Water determination | ≤3.0% |
| Residual solvents | Ethanol ≤5000ppm |
| N-Heptane ≤5000ppm | |
| Acetone ≤5000ppm | |
| Dichloromethane ≤600ppm | |
| Chloroform ≤60ppm | |
| Microbial limit | Total aerobic bacteria ≤500cfu/g |
| Total combined yeasts and molds ≤100cfu/g | |
| Escherichia coli Absent/g | |
| Assay | Milbemycin Oxime (A3+A4): 95.0%~101.0%, calculated on the anhydrous basis |
| Ratio A4 / (A3+A4) ≥0.80 | |
| Ratio A3 / (A3+A4) ≤0.20% |