CAS number： 2152-44-5
Molecular formula： C27H37FO6
molecular weight： 476.57700
Chemical structure：
| Product name | Betamethasone Valerate | |
| Valerate Shelf life | 3 years | |
| Item | Specification | Result |
| Appearance | White to practically white powder | White powde |
| Identification (by IR) | Conforms to the CRS spectrum. | Conforms |
| Specific rotation | +75°-+82° (dried substance) | +76.3° |
| Loss on drying | <0.5% | 0.2% |
| Residue on ignition | <0.2% | 0.1% |
| Related substances (by HPLC) | Any impurity<L0% | 0.29% |
| Assay (by HPLC) | Total impurities<2.0% | 0.62% |
| Conclusion: | Meet the specification according to USP36 | |
