International Scholarly Research Notices / 2014 / Article / Tab 3 / Research Article
Stability-Indicating HPLC Method for the Simultaneous Determination of HIV Tablet Containing Emtricitabine, Tenofovir Disoproxil Fumarate, and Rilpivirine Hydrochloride in Pharmaceutical Dosage Forms Table 3 Evaluation data of robustness study.
Parameter
Sampling interval
EMT
TDF
RPV Amount present (mg) (%) %RSD Amount present (mg) (%) %RSD Amount present (mg) (%) %RSD Wavelength −1 nm 200.25 100.12 0.334 297.04 99.01 0.837 24.63 98.54 0.001 +1 nm 200.10 100.50 0.624 299.47 99.82 0.323 24.92 99.68 0.029 Mobile phase −2% 200.16 100.08 0.225 299.44 99.81 0.163 24.82 99.30 0.689 +2% 200.09 100.04 0.430 298.92 99.64 0.509 24.68 98.75 0.370 Flow rate −0.1 mL 198.81 99.40 0.837 300.55 100.18 0.019 24.47 97.89 1.469 +0.1 mL 196.28 98.14 3.192 298.49 99.49 0.403 24.68 98.74 0.378 pH −0.05 199.7 99.85 0.74 298.7 99.56 0.21 24.59 98.36 0.22 +0.05 199.9 99.95 0.63 300.4 100.1 0.11 24.71 98.84 0.34