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Revista Cubana de Farmacia

versión impresa ISSN 0034-7515versión On-line ISSN 1561-2988

Resumen

GARCIA PENA, Caridad Margarita et al. Determination of Diclofenac sodium by high-performance liquid chromatography in 0,1 % eyedrops. Rev Cubana Farm [online]. 2009, vol.43, n.3. ISSN 0034-7515.

Diclofenac sodium is a drug prescribed in eye anterior segment inflammation postoperative treatments, preoperative and postoperative cataract miosis inhibition, symptomatic treatment of non-infectious chronic conjunctivitis, of ocular inflammation, of ocular pain, and of refractory postsurgical photophobia. In present paper we developed and validated an analytical method by high-performance liquid chromatography to quality control, and stability studies of Diclofenac sodium of 1 % eyedrops. Method was based on active principle separation through endcapped 1 00RP-8 Lichrospher chromatographic column (5 µ) (250 x 4 mm) using UV detection to 254 nm, thus using a mobile phase including sodium a solution of hydrogen phosphate to a 2.5 pH: methanol in a 34:60 ratio. Calibration curve was plotted during the interval of 60 to 140 % where it was linear with a correlation coefficient equal to 0.9995; statistic test for interception and slope was considered as non-significant. We achieved a recovery rate of 100.25 % during study concentration interval, and Cochran (G) and Student (t) tests were not significant. Variation coefficient in repeating study was equal to 0.39 % for the 6 assayed replica, whereas in average precision analysis Fischer and Student tests were non-significant. Analytical method was linear, precise, specific and exact during the interval of study concentrations.

Palabras clave : CLAR/methods; Diclofenac sodium; validation; eyedrops.

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