A stability-indicating capillary electrophoresis method for the determination of emtricitabine and tenofovir disoproxil fumarate in pharmaceutical tablets

Acta Chromatographicae

Al-Showiman Hessa¹  Al-Shammary Dlayel J.¹  Al-Zoman Nourah Z.¹  Maher Hadir M.²  Al-Johar Haya I.³ 

[1] 1Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11495, Saudi Arabia;1Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11495, Saudi Arabia2Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Alexandria University, El-Messalah, Alexandria 21521, Egypt;1Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11495, Saudi ArabiaAuthor for correspondence: [e-mail]

关键词: CE–DAD;    stability indicating;    emtricitabine;    tenofovir disoproxil fumarate;   

DOI  :  10.1556/1326.2017.00057

学科分类：化学（综合）

来源: Akademiai Kiado Rt.

【 摘 要 】

A stability-indicating capillary electrophoresis method coupled to a diode array detector (DAD) was developed and validated for the simultaneous determination of emtricitabine (FTC) and tenofovir disoproxil fumarate (TDF) in combined tablets. This proposed method utilized a fused silica capillary (effective length, 62 cm; internal diameter [ID], 75 μm) and a background electrolyte (BGE) consisting of phosphate solution (pH 9.5, 50 mM). The separation was achieved at a voltage of 25 kV and a temperature of 21 °C using paracetamol as an internal standard. The described method was linear over the range of 5–200 μg/mL for both drugs (r = 0.9992). Intra- and inter-day relative standard deviation (RSD) (n = 9) was 0.41%. The limits of detection for FTC and TDF were 1.25 and 1.00 μg/mL, respectively. The average percentage recoveries of FTC and TDF from their tablet formulations were 99.66 ± 0.73 and 99.48 ± 0.33, respectively. The two drugs were subjected to thermal, photolytic, hydrolytic, and oxidative stress conditions, and then the stressed samples were analyzed by the proposed method. Degradation products produced as a result of stress studies did not interfere with the detection of FTC and TDF. The assay can thus be considered stability indicating.

【 授权许可】

Unknown