alexa Comparison of several methods used for the determination of cephalosporins. Analysis of cephalexin in pharmaceutical samples.
Chemistry

Chemistry

Medicinal chemistry

Author(s): Gallo Martnez L, Campns Falc P, Sevillano Cabeza A

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Abstract The precision of UV absorbance of intact and acid degraded cephalosporins, ninhydrin, high performance liquid chromatography and iodometric methods used for analysis of cefoxitin, cefotaxime, cephazolin and cephalexin were compared. To obtain the calibration graphs the analytical signal used were: absorbance, first derivative absorbance, second derivative absorbance and H-point Standard Additions Method by using absorbance values at two selected wavelengths as analytical signal. These methods and calibration graphs were also used for the determination of cephalexin in pharmaceutical samples.
This article was published in J Pharm Biomed Anal and referenced in Medicinal chemistry

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