Dexamethasone Acetate

CAS number:1177-87-3

Molecular formula:C24H31FO6

molecular weight:434.4977

Chemical structure:

Product name Dexamethasone Acetate
Shelf Life
3 years
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%
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.