Author: Tsou Tai-Li Lee Chiu-Wey Wang Hsian-Jenn Cheng Ya-Chung Liu Yu-Tien Chen Su-Hwei
Publisher: AOAC International
ISSN: 1944-7922
Source: Journal of AOAC International, Vol.92, Iss.4, 2009-07, pp. : 1089-1094
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Abstract
A new HPLC method has been developed and validated for the simultaneous determination of ticarcillin (TIC) and clavulanic acid (CA) in pharmaceutical formulations. The HPLC separation was achieved on a -cyclodextrin column (Cyclobond I, 250 4.6 mm, 5 mm) with methanol16 mM pH 6.0 ammonium acetate buffer (50 + 50, v/v) mobile phase at a flow rate of 0.8 mL/min. Detection was at 220 nm. Validation of the method was performed by evaluating specificity, robustness, accuracy, and precision. The calibration curves were linear in the range of 1100 g/mL for CA and 2200 g/mL for TIC. The LOQs based on the standard regression lines were 0.42 and 1.42 g/mL for CA and TIC, respectively, and the LOD were 0.14 and 0.47 g/mL, respectively. Total recoveries of synthetic mixtures (CA:TIC = 1:10, 1:15, and 1:30) were 99.25100.99 for CA and 99.54100.82 for TIC. Compared with the U.S. Pharmacopeia method, the proposed method has the advantage of a relatively low flow rate and short analysis time. The proposed method was successfully applied for the simultaneous determination of these two drugs in sterilized H2O and 5 dextrose injection solutions.
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