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An alternative stability-indicating reverse-phase high-performance liquid chromatography (RP-HPLC) approach remained established to quantify silodosin (SLD) and dutasteride (DTS) in the mixture, validated per International Council of Harmonization (ICH) recommendations. A Shimadzu Model LC-2030 PLUS (IND) HPLC system, 231 nm detection wavelength, and 10 minutes run duration were used to create the method. A 75:25 mobile phase of methanol and water with 0.05% OPA was used at 1-mL/min. The concentrations of SLD (8–40 μg/mL) and DTS (0.5–2.5 μg/mL) were shown to be linearly related, with R2 values of 0.9998 for SLD and 0.9993 for DTS. Both of the drugs had accuracy and precision within 2% RSD. SLD and DTS mean recoveries were 97.5 to 102%. According to ICH criteria, degradation trials with acid, alkali, oxidizing agent, and heat assessed the approach’s stability. The established approach is fast, accurate, sensitive, and precise for routine SLD and DTS analysis from bulk as well as pharmaceutical dosage forms.
Pathade et al. (Tue,) studied this question.
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