Item | Specification |
Appearance | White or yellowish-white crystalline powder |
Solubility | Practically insoluble in water, freely soluble in methylene chloride, soluble in alcohol. |
Identification | IR: corresponds with that of CRS standard HPLC: the retention time for H2B1a and H2B1b corresponds with that of standard preparation |
Appearance of solution | Clear and not more intensely colored than BY7 |
Specific optical rotation (anhydours and solvent-free substance) | -17 to -20° |
Related substances (%) | Individual impurities (RRT1.3-1.5)≤2.5 |
Any other individual impurities≤1 | |
Total≤5 | |
Disregard limit≤0.05 | |
Ethanol and formamide (%) | Ethanol≤5.0 |
Formamide≤3.0 | |
Water (%) | ≤1.0 |
Sulphated ash (%) | ≤0.1 |
Cat (ug/g) | ≤1 |
Assay (%), (HPLC, basis on drying) | H2B1A/(H2B1a + H2B1b) ≥ 90.0 95.0≤H2B1a + H2B1b≤102.0 |
Synonyms: Ivermectine
CAS No.: 70288-86-7
Quality: EP9
Molecular Formula: C48H74O14
Formula Weight: 875.09