Fig. 3From: Utility of sustainable ratio derivative spectrophotometry for the concurrent assay of synergistic repurposed drugs for COVID-19 infections; Insilico pharmacokinetics proofFourier convoluted zero-order spectra of different concentrations of FVM (5, 10, 20 μg/mL) and IVM (2.5, 10, 15 μg/mL) showing zero crossing of IVM at 270 nmBack to article page