Research Article

Stability-Indicating High-Performance Thin-Layer Chromatographic Method for Quantitative Estimation of Emtricitabine in Bulk Drug and Pharmaceutical Dosage Form

Table 2

Intraday and interday precision of emtricitabine ( 𝑛 = 6 ).

Concentration (ng spot−1) Repeatability Intermediate precision
Measured conc.
(ng spot−1) ± S.D
RSD%S.E.Measured conc.
(ng spot−1) ± S.D
RSD%S.E.

70 6 8 . 9 7 ± 0 . 3 6 0.520.15 6 8 . 9 3 ± 0 . 4 1 0.590.17
90 8 9 . 1 9 ± 0 . 2 9 0.320.12 8 8 . 9 5 ± 0 . 3 8 0.420.16
110 1 0 8 . 8 9 ± 0 . 3 4 0.310.14 1 0 9 . 0 8 ± 0 . 2 9 0.260.12