Selective Consecutive Determination of Desloratadine and Montelukast Sodium in Their Pure and Binary Dosage Form Based on Pencil Graphite Electrochemical Sensors

Abstract

In this study, we present a new, green electrochemical method for potentiometric estimation of desloratadine and montelukast sodium in their pure and binary dosage form. For that, three pencil graphite sensors were fabricated; the first one was prepared to analyse desloratadine drug (DES) by coating the graphite bar with the coating membrane, which comprises the ion pair of desloratadine and ammonium reineckate reagent (RNK), the polymer poly vinyl chloride (PVC), and the plasticizers dibutyl phthalate (DBP). The second one, which was used to analyse montelukast (MON), was constructed by using the ion pair of cadmium chloride reagent (Cd.) with montelukast and the same earlier named polymer and plasticizer. As a trial to analyse both of the drugs by the same sensor consecutively, we have constructed a combined pencil graphite electrode, which contains the two earlier suggested ion pairs, that is, we can use this electrode to selectively analyse for each drug. The proposed electrodes were effectively used for analysis of DES and MON as a single dosage form and as combined pharmaceutical preparation, without any need for prior separation that was performed depending on the difference in the efficient pH range for each sensor. The proposed sensors exhibited a Nernstian equation slopes of −30.11, 27.70, (−29.16, 29.79) mv. decade−1 in the linearity range 5.00 × 10−5−1.00 × 10−2 and 1.00 × 10−5 − 1.00 × 10−2 M, respectively. The sensors exhibit high sensitivity according to LOD values ((0.036–0.018) − (0.025-0.026) µM), respectively, and important selectivity toward the studied drugs in presence of interfering ions and excipients. The optimum circumstances were studied, and the method was validated by application of ICH rules. Finally, the method was compared with a documented method, and the required statistical values were calculated.

A comprehensive review of the analytical methods used for the determination of selected antihistamines in pharmaceutical dosage forms and biological fluids

“…The Current study describes the construction of three carbon paste electrodes for the quantitative measurement of the third-generation antihistamines fexofenadine (FEX), Desloratadine (DES), and Levocetirizine (LEV) (Sakur, Nashed, & Noureldin, 2022), DES and MKT was also estimated in their pure and binary dosage form by fabricating three pencil graphite sensors (Sakur, Nashed, & Noureldin, 2021). Another voltammetric method depends on the examination of the electrochemical behavior of desloratadine (DLOR), and its derivative 3-hydroxydesloratadine (3OH-DLOR) was investigated by direct current (DCP) polarography, cyclic (CV), differential pulse (DPV) and square-wave (SWV) voltammetry (Aleksić, Radulović, Kapetanović, & Savić, 2010).…”

Development of a green synchronous spectrofluorimetric technique for simultaneous determination of Montelukast sodium and Bilastine in pharmaceutical formulations

“…The available literature review revealed various methods for analyzing MTK. These methods were spectrophotometric [ 8 , 9 ], spectrofluorimetric [ 10 , 11 ], HPTLC [ 7 , 12 , 13 ], HPLC [ 14 , 15 ] and electrochemical methods [ 16 , 17 ]. BIL is a second-generation antihistaminic medication that is administered orally to treat allergic rhinitis symptoms [ 18 ].…”