Betamethasone Valerate Betamethasone 2152-44-5
Appearance A white or almost white crystalline powder Identification The position of principal spot in the chromatogram abtaine with the test solution correspond to the standard. Specific optical rotation +75~+80? Loss on drying 0.5% max Residue on ignition 0.2% max Related substances Total impurities: 2.0% max Any individual impurities: 1.0%max Residual solvents Acetone: 5000ppm max Methanol:3000ppm max Tetrahydrofuran:720ppm max Pyridine: 200ppm max Assay,on dry base 97-103% |
Appearance A white or almost white crystalline powder Identification The position of principal spot in the chromatogram abtaine with the test solution correspond to the standard. Specific optical rotation +75~+80? Loss on drying 0.5% max Residue on ignition 0.2% max Related substances Total impurities: 2.0% max Any individual impurities: 1.0%max Residual solvents Acetone: 5000ppm max Methanol:3000ppm max Tetrahydrofuran:720ppm max Pyridine: 200ppm max Assay,on dry base 97-103% |
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