CAS number: 1177-87-3
Molecular formula: C24H31FO6
molecular weight: 434.4977
Chemical structure:
Product name | Dexamethasone Acetate | |
Shelf Life | 3 years | |
Items | Standard | Results |
Description | White or almost white crystalline powder | Almost white crystalline powder |
Identification | IR Complies with the standard | Complies |
UV: no more than 3.0% | 1.1% | |
Specific Rotation | +82° to +88° | +86.9° |
Loss on drying | not more than 0.4% | 0.2% |
Residue on ignition | not more than 0.1% | 0.06% |
Chromatographic purity | principal impurity no more than 1.0% | 0.34% |
total impurities no more than 2.0% | 0.67% | |
Residual Solvents | Acetone no more than 1000ppm | 86ppm |
Heavy metal | Not more than 20ppm | Less than 20ppm |
Assay | 97.0% to 102.0% on dried base | 98.7% |
Conclusion: The test product complies with the requirements of USP39. |