title: Spectrophotometric determination of meclizine hydrochloride and pyridoxine hydrochloride in laboratory prepared mixtures and in their pharmaceutical preparation.
abstract: In this paper, three rapid, simple, accurate and precise spectrophotometric methods were developed for the determination of meclizine hydrochloride in the presence of pyridoxine hydrochloride without previous separation. The methods under study are dual wavelength (DWL), ratio difference (RD) and continuous wavelet transform (CWT). On the other hand, pyridoxine hydrochloride (PYH) was determined directly at 291nm. The methods obey Beer's law in the range of (5-50μg/mL) for both compounds. All the methods were validated according to the ICH guidelines where the accuracy was found to be 98.29, 99.59, 100.42 and 100.62% for DWL, RD, CWT and PYH; respectively. Moreover the precision of the methods were calculated in terms of %RSD and it was found to be 0.545, 0.372, 1.287 and 0.759 for DWL, RD,CWT and PYH; respectively. The selectivity of the proposed methods was tested using laboratory prepared mixtures and assessed by applying the standard addition technique. So, they can be used for the routine analysis of pyridoxine hydrochloride and meclizine hydrochloride in quality-control laboratories.
authors.affiliation: Analytical Chemistry Department, Faculty of Pharmacy, Modern University for Technology and Information (MTI), Egypt.
authors.forename: Maha M
authors.initials: MM
authors.lastname: Ibrahim
authors.affiliation: Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Egypt.
authors.forename: Eman S
authors.initials: ES
authors.lastname: Elzanfaly
authors.affiliation: Analytical Chemistry Department, Faculty of Pharmacy, Modern University for Technology and Information (MTI), Egypt. Electronic address: mohamedbadrelzeiny@gmail.com.
authors.forename: Mohamed B
authors.initials: MB
authors.lastname: El-Zeiny
authors.affiliation: Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Egypt.
authors.forename: Nesreen K
authors.initials: NK
authors.lastname: Ramadan
authors.affiliation: Analytical Chemistry Department, Faculty of Pharmacy, Modern University for Technology and Information (MTI), Egypt; Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Egypt.
authors.forename: Khadiga M
authors.initials: KM
authors.lastname: Kelani
mesh_terms: D002626:Chemistry, Pharmaceutical; D008468:Meclizine / Q000032:analysis*; D011736:Pyridoxine / Q000032:analysis*; D012015:Reference Standards; D015203:Reproducibility of Results; D013053:Spectrophotometry / Q000379:methods*; D058067:Wavelet Analysis
chemical_list: D008468:Meclizine; D011736:Pyridoxine
keywords: Continuous wavelet transform; Dual wave length; Meclizine HCl; Pyridoxine HCl; Ratio difference; Spectrophotometric methods