Simultaneous determination of potassium clavulanate and cefixime in synthetic mixtures by high-performance liquid chromatography.
A simple, precise, and sensitive high-performance liquid chromatographic method was developed and validated for the simultaneous determination of potassium clavulanate and cefixime in synthetic mixture form. The analytes were separated on a C18 column by using 0.03 M disodium hydrogen phosphate buffer (pH 6.5)-methanol (84 + 16, v/v) as the mobile phase with detection at 220 nm. The method exhibited high sensitivity and good linearity in the concentration ranges of 12.5-62.5 and 20-100 microg/mL for potassium clavulanate and cefixime, respectively. The total run time for the 2 components was <8 min, and the average recovery was >101.5% with a relative standard deviation of <1.0%. The proposed method was validated according to guidelines of the International Conference on Harmonization by evaluation of linearity, recovery, selectivity, robustness, limits of detection and quantitation, and within- and between-day precision. The results obtained for the synthetic mixture show that the method is highly precise and accurate for the simultaneous determination of potassium clavulanate and cefixime.
Khan
Islam Ullah
IU
Government College University, Faculty of Science, Department of Chemistry, Lahore-54000, Pakistan.
Sharif
Shahzad
S
Ashfaq
Muhammad
M
Asghar
Muhammad Nadeem
MN
D000900:Anti-Bacterial Agents / Q000032:analysis*; D020682:Cefixime / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid; D019818:Clavulanic Acid / Q000032:analysis*; D004338:Drug Combinations; D004355:Drug Stability; D007202:Indicators and Reagents; D011786:Quality Control; D012015:Reference Standards; D015203:Reproducibility of Results; D012996:Solutions
D000900:Anti-Bacterial Agents; D004338:Drug Combinations; D007202:Indicators and Reagents; D012996:Solutions; D019818:Clavulanic Acid; D020682:Cefixime