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. 2020 Mar 6;12(3):237. doi: 10.3390/pharmaceutics12030237

Figure 2.

Figure 2

Different options to correct scattering in UV-Vis spectra: (A) Uncorrected spectrum; (B) mean value over range, black bold range: Mean value calculation (at the top) and the corrected spectrum (at the bottom); (C) exponential fit, black bold range 300–350 nm: Fitting function range (at the top). Ritonavir is quantified at 240 nm using the corrected spectrum (at the bottom); (D) first derivative and the inflection point at 264 nm, where ritonavir is quantified (at the bottom).