Rapid stability-indicating UHPLC method for determination of lamivudine and tenofovir disoproxil fumarate in fixed-dose combination tablets

Authors

  • Danielle Evangelista Rabelo de Souza Divisão de Controle de Qualidade, Diretoria Industrial - Fundação Ezequiel Dias image/svg+xml
    • Nicoly Kaliny Magela Gomes Laboratório de Controle de Qualidade de Medicamentos e Cosméticos, Departamento de Produtos Farmacêuticos, Faculdade de Farmácia - Universidade Federal de Minas Gerais image/svg+xml
      • Gerson Antônio Pianetti Laboratório de Controle de Qualidade de Medicamentos e Cosméticos, Departamento de Produtos Farmacêuticos, Faculdade de Farmácia - Universidade Federal de Minas Gerais image/svg+xml
        • Bruno Gonçalves Pereira Divisão de Desenvolvimento de Medicamentos, Diretoria Industrial - Fundação Ezequiel Dias image/svg+xml
          • Christian Fernandes Laboratório de Controle de Qualidade de Medicamentos e Cosméticos, Departamento de Produtos Farmacêuticos, Faculdade de Farmácia - Universidade Federal de Minas Gerais image/svg+xml https://orcid.org/0000-0002-3905-3674

            DOI:

            https://doi.org/10.22456/2527-2616.117905

            Keywords:

            AIDS, antiviral drug, stability-indicating method, forced degradation, ultra high-performance liquid chromatography

            Abstract

            Lamivudine (3TC) and tenofovir disoproxil fumarate (TDF) are antiretroviral drugs widely used for AIDS treatment. Since safety, efficacy and quality are essential for drug products, stability studies must be performed. Therefore, degradation studies must be carried out to evaluate the degradation products formed. The active pharmaceutical ingredients 3TC and TDF, as well as the tablets containing the combination of these drugs were subjected to a comprehensive forced degradation. 3TC, TDF and the degradation products were analyzed by a stability-indicating ultra-high performance liquid chromatography (UHPLC) method developed and validated. A C8 (100 x 2.0 mm, 2.2 μm) column and a mobile phase composed of 0.1 M ammonium acetate buffer pH 4.0, acetonitrile and methanol in gradient elution, at 0.5 mL/min, were used. The injection volume was 4 μL and detection was at 260 nm. The method was selective, precise, accurate and linear in the range 0.1-0.6 mg mL-1 for the two drugs. 3TC was degraded in acidic, alkaline and oxidative environment and in the presence of metal ions. Two degradation products were observed. TDF was degraded in the same conditions than those 3TC was labile. In addition, TDF was degraded in neutral condition. Again, two degradation products were formed. Chemical structures were proposed for the degradation products using UHPLC-QTOF/MS. The stability-indicating method developed showed to be useful in stability studies and in the quality control of fixed-dose combination tablets containing 3TC and TDF.

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            Published

            15-12-2021 — Updated on 24-03-2026

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            How to Cite

            de Souza, D. E. R., Gomes, N. K. M., Pianetti, G. A., Pereira, B. G., & Fernandes, C. (2026). Rapid stability-indicating UHPLC method for determination of lamivudine and tenofovir disoproxil fumarate in fixed-dose combination tablets. Drug Analytical Research, 5(2), 17–24. https://doi.org/10.22456/2527-2616.117905 (Original work published December 15, 2021)

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