Mathematically Processed UV Spectroscopic Method for Quantification of Chlorthalidone and Azelnidipine in Bulk and Formulation: Evaluation of Greenness and Whiteness

Figure 2

(a) Normal spectra of CTL (blue), AZE (red), and Mixture (black); (b) first derivative spectra of CTL (blue), AZE (red), and mixture (black); (c) first derivative spectra (1–15 μg/mL) of AZE; (d) first derivative spectra (1–15 μg/mL) of CTL.

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