Table 3 Quantitative determination of FPV and RDV in pharmaceutical preparations using the proposed methods, as well as the results of using the standard addition technique, with statistical comparison to the reported methods

Avipiravir tablets ^a

99.46 ± 0.765

100.23± 1.099

100.03 ± 1.169

Remdesivir- vial ^a

99.51 ± 0.658

100.20 ± 1.040

100.14 ± 1.319

Standard addition ^b

100.55 ± 0.986

100.12 ± 0.887

Standard addition ^b

100.98 ± 1.058

100.42 ± 0.974

t-Test (2.306)^c

0.905

0.869

t-Test (2.306)^c

0.120

0.085

F-test (6.388)^c

2.364

3.191

F-test (6.388)^c

1.440

1.607