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Spectrofluorimetric Determination of Terbinafine Hydrochloride and Linezolid in their Dosage Forms and Human Plasma

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Abstract

A highly sensitive, simple and rapid spectrofluorimetric method was developed for the determination of Terbinafine HCl (TRH) and linezolid (LNZ) in their pharmaceutical formulations. The proposed method is based on measuring the native fluorescence of the studied drugs in water at 336 nm after excitation at 275 nm for TRH and 375 nm after excitation at 254 nm for LNZ. The fluorescence–concentration plots were rectilinear over the range of 0.02–0.15 μg/mL for TRH and 0.5–5.0 μg/mL for LNZ. With lower detection limits of 3.0 and 110.0 ng/mL and a lower quantification limit of 9.0 and 320.0 ng/mL for TRH and LNZ, respectively. The method was successfully applied to the analysis of TRH in its commercial tablets, cream, gel and spray formulations and the results were in good agreement with those obtained with the official method. In addition the method was also applied to the analysis of LNZ in its capsule and I.V solution and the results were in good agreement with those obtained with the comparison method. The effect of sensitizers was studied. The method was extended to the determination of the studied drugs in spiked human plasma and the results were satisfactory.

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Authors and Affiliations

  1. Department of Analytical Chemistry, Faculty of Pharmacy, University of Mansoura, 35516, Mansoura, Egypt

    F. Belal, M. K. Sharaf El-Din, M. I. Eid & R. M. El-Gamal

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  1. F. Belal
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  2. M. K. Sharaf El-Din
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  3. M. I. Eid
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  4. R. M. El-Gamal
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Correspondence to R. M. El-Gamal.

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Belal, F., Sharaf El-Din, M.K., Eid, M.I. et al. Spectrofluorimetric Determination of Terbinafine Hydrochloride and Linezolid in their Dosage Forms and Human Plasma. J Fluoresc 23, 1077–1087 (2013). https://doi.org/10.1007/s10895-013-1237-3

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  • DOI: https://doi.org/10.1007/s10895-013-1237-3

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