Table 4.
Determination of PHE and DOX in its tablet dosage form and application of standard addition technique using the established methods. a average of 3 determinations of tablet dosage form.
| PHE | DOX | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HPLC method | HPTLC method | HPLC method | HPTLC method | |||||||||
| Taken (µg/mL) | Added (µg/mL) | Recovery % | Taken (µg/band) | Added (µg/band) | Recovery % | Taken (µg/mL) | Added (µg/mL) | Recovery % | Taken (µg/band) | Added (µg/band) | Recovery % | |
| Dosage form (10 mg PHE/10.5 mg DOX) | 6.00 | 3.00 | 101.66 | 6.00 | 3.00 | 101.54 | 6.50 | 3.25 | 101.57 | 6.50 | 3.25 | 99.49 |
| 6.00 | 99.01 | 6.00 | 100.81 | 6.50 | 98.94 | 6.50 | 100.56 | |||||
| 12.00 | 98.69 | 12.00 | 100.65 | 13.00 | 98.66 | 13.00 | 99.49 | |||||
| Meana % ± SD | 99.78 ± 1.63 | Meana % ± SD | 101.04 ± 0.47 | Meana % ± SD | 99.72 ± 1.60 | Meana % ± SD | 99.84 ± 0.61 | |||||