Table 2 System suitability parameters of the proposed HPLC-UV method
Parameters | Cefadroxil | Cefprozil | Cephalexin (I.S) | Cefradine |
|---|---|---|---|---|
Retention time (tR) | 2.84 | 5.46 | 6.27 | 8.4 |
K′ (capacity factor) | 1.44 | 3.7 | 4.41 | 6.24 |
Number of plates (N) | 5662 | 7019 | 7544 | 8122 |
Height equivalent to the theoretical plates (HETP) | 0.0018 | 0.0014 | 0.0013 | 0.0012 |
Tailing | 0.85 | 0.80 | 0.8 | 0.79 |
Resolution (Rs) | 13.02 | 3 | 6.64 | |
Selectivity | 2.64 | 1.06 | 1.38 | |