CAS No:107868-30-4
Shelf life:4 years
The detailed specifications are as below:
| Items | Standard |
| Characteristics | White crystalline powder |
| Identification | A:IR B:RT(HPLC) |
| Residue on ignition | ≤0.20% |
| solubility | Freely soluble in N,N-dimethylformamide;soluble in methanol;insoluble in water. |
| Water | ≤0.30% |
| Specific optical rotation | +290°～+300° |
| Impurity | Exemestane related compound B≤0.15% Exemestane related compound C(AAD)≤1.0% Exemestane related compound D≤0.10% Any unspecified impurity≤0.1% Total impurity≤2.5% |
| Residual solvents | Ethanol ≤5000ppm Ethyl acetate≤5000ppm |
| Micron | 100%≤20μm |
| Assay(HPLC) | 97.0～102.0% |