USD $100.00-150.00 / Kilogram
USD $32.00-34.00 / Metric Ton
USD $1.00-10.00 / Kilogram
USD $90.00-100.00 / box
tests uspspecifications results appearance …
tests | usp specifications | results |
appearance | white or almost white crystalline powder, no odor and bitter.insoluble in water, freely soluble in chloroform, soluble in acetone or ethyl acetate, sparingly soluble in methanol of alcohol. | conforms |
identification tests (ir) | conforms to the reference spectrum | conforms |
specific optical rotation | -89°-95° | -92° |
crystallinity | should conform to requirements | conforms |
ph | between 7.5 and 10.0 | 8.7 |
water | ≤2.0% | 0.92% |
residue on ignition | ≤0.3% | 0.04% |
residual solvents | ethanol≤0.5% | not detected |
heavy metals | ≤20ppm | <20ppm |
assay (hplc, dried substance) | 9601040ug/mg | 981ug/mg |
conclusion: conforms to usp 28 specification for clarithromycin |