Table 3 Precision and accuracy of FEX related compounds using the proposed HPLC method
| Impurity A | Impurity B | Impurity C | Impurity D | |
|---|---|---|---|---|
| Overall mean % recovery a | 101.5 | 102.0 | 101.9 | 98.4 |
| Intra-day precision (RSD) | 1.55 | 1.23 | 0.88 | 1.32 |
| Inter-day precision (RSD) | 1.78 | 1.56 | 1.20 | 1.67 |
