AJAC  Vol.6 No.2 , January 2015
Development and Validation of Stability Indicating HPTLC Assay for Determination of Gemifloxacin Mesylate in Dosage Forms
Abstract: Simple and sensitive stability-indicating high performance thin layer chromatography (HPTLC) assay was developed and validated for quantitative determination of the antibacterial drug, gemifloxacin mesylate (GFX) in presence of its degradation products and ambroxol hydrochloride. The chromatographic separation was performed on HPTLC precoated silica gel plate 60F254 as stationary phase. The mobile phase consisted of a mixture of ethyl acetate: methanol: 25% ammonia, (8:4.5:3, v/v/v). The detection was performed using fluorescence mode and the emission intensity was measured using optical filter K400 after excitation at 342 nm. The Rf value for GFX was 0.47 ± 0.03. Good correlation coefficient was obtained over the concentration range of 1.5 - 180 ng/band. The LOD and LOQ of the proposed method were 0.28 and 0.86 ng/band, respectively. The proposed method was successfully applied for the analysis of GFX in its single and combined dosage forms. Moreover, it was utilized to investigate the kinetics of acidic, alkaline, neutral, oxidative and photolytic degradation of the drug. The apparent kinetic-order rate constants and half-life times of the degradation process were calculated. Furthermore, the proposed method was successfully applied for investigating the factors affecting the storage of GFX.
Cite this paper: Mahmoud, A. , Atia, N. , El-Shabouri, S. and El-Koussi, W. (2015) Development and Validation of Stability Indicating HPTLC Assay for Determination of Gemifloxacin Mesylate in Dosage Forms. American Journal of Analytical Chemistry, 6, 85-97. doi: 10.4236/ajac.2015.62008.

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