Development and validation of a stability indicating method for seven novel derivatives of lamivudine with anti-HIV and anti-HBV activity in simulated gastric and intestinal fluids
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Otros documentos de la autoría: Gualdesi, María S.; Esteve-Romero, Josep; Briñón, Margarita C.; Raviolo, Mónica A.
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http://dx.doi.org/10.1016/j.jpba.2013.01.027 |
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Título
Development and validation of a stability indicating method for seven novel derivatives of lamivudine with anti-HIV and anti-HBV activity in simulated gastric and intestinal fluidsFecha de publicación
2013-05Editor
ElsevierCita bibliográfica
GUALDESI, María S., et al. Development and validation of a stability indicating method for seven novel derivatives of lamivudine with anti-HIV and anti-HBV activity in simulated gastric and intestinal fluids. Journal of pharmaceutical and biomedical analysis, 2013, 78: 52-56.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://www.sciencedirect.com/science/article/pii/S0731708513000368Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
A simple micellar liquid chromatography (MLC) method has been developed and validated for use in stability indicating studies of lamivudine and its carbonate derivatives with proved activity against human immunodefi ... [+]
A simple micellar liquid chromatography (MLC) method has been developed and validated for use in stability indicating studies of lamivudine and its carbonate derivatives with proved activity against human immunodeficiency and hepatitis B viruses (HIV and HBV, respectively), in simulated gastric (SGF) and intestinal (SIF) fluids samples. The optimized method involves a C18 column thermostated at 30 °C, UV detection at 272 nm, a flow rate of 1.0 mL min−1 and a micellar mobile phase composed by 0.15 M sodium dodecyl sulphate (SDS) – 4% (v/v) 1-butanol – 0.01 M KH2PO4–Na2HPO4 (pH 7), using zidovudine (AZT) as internal standard. Validation under Food and Drug Administration (FDA) guideline of the analytical parameters include: linearity (r2 > 0.9996), LODs (1.6 × 10−7–6.9 × 10−6 M) and LOQ (1 × 10−5 M), intra (0.02–1.48%) and inter-day precision (0.04–1.66%) expressed as relative standard deviation (R.S.D.), and robustness parameters (less than 1.98%). Using this method, recoveries ranging from 92.9 to 119% were obtained for the eight substances. Thus, this method provides a simple, sensitive, accurate and precise assay for the determination of all compounds that can be readily adaptable to routine use by clinical laboratories with standard equipment. In addition, we evaluated the stability of carbonates of lamivudine in buffer pH 1.2 and 6.8; SGF (pH 1.2) and SIF one (pH 6.8), all as indicated in United States Pharmacopeia (USP) 32. Finally, this chromatographic method was applied to stability studies which resulted in all the compounds following a pseudo-first-order kinetics, and in the determination of its kinetic constant and half-life time. [-]
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Journal of Pharmaceutical and Biomedical Analysis Volumes 78–79, 5 May 2013Derechos de acceso
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