Fig. 3From: Eco-friendly resolution of spectrally overlapping signals of a combined triple-action over-the-counter pharmaceutical formulation for symptomatic management of COVID-19 pandemic: application to content uniformity testingFirst derivative order (1D) absorption spectra of PAR (Blue line), ASP (red dotted line), and DIPH (green dashed line) at concentration 10.0 μg/mL, eachBack to article page