China Pharmaceutical Intermediate CAS117704-25-3 Veterinary Raw Material Pure Doramectin Powder, Find details about China Doramectin Powder, Doramectin Raw Material from Pharmaceutical Intermediate CAS117704-25-3 Veterinary Raw Material Pure Doramectin Powder
Items | Specification | Results |
Appearance | White crystalline powder | pass |
Identification | HPLC: the retention time of major peak of test solution should correspond to that of reference solution. | conform |
IR: Sample spectrum corresponds to that of standard spectrum. | conform | |
Appearance of solution | The solution is clear and not more intensely colored than reference solution BY6. | conform |
Related substance | Avermectin: NMT2.0% | 0.41% |
Total impurities: NMT5.0% | 2.57% | |
Residual solvents | Ethanol:NMT30000ppm | 15500ppm |
Acetone:NMT5000ppm | 5ppm | |
BHT | NMT2000ppm | 43ppm |
Sulphate ash | NMT0.1% | 0.03% |
Water | NMT3.0% | 1.6% |
Heavy metal | NMT20ppm | 20ppm |
Assay | ≥95.0% | 99.1% |