HPLC-MS identification of degradation products of levofloxacin.
- Author:
Wei-Jian WANG
1
;
Tao LI
;
Jun LI
;
Qi LIU
;
Yuan-Chao XIE
Author Information
1. Shandong Provincial Institute for Food and Drug Control, Jinan 250101, China.
- Publication Type:Journal Article
- MeSH:
Chromatography, High Pressure Liquid;
methods;
Drug Stability;
Levofloxacin;
Mass Spectrometry;
methods;
Ofloxacin;
analysis;
chemistry;
Photolysis
- From:
Acta Pharmaceutica Sinica
2012;47(4):498-501
- CountryChina
- Language:Chinese
-
Abstract:
The study aims to identify the degradation products of levofloxacin by HPLC-MS. The degradation products of levofloxacin were chromatographed on Agilent Zorbax Extend-C18 column (250 mm x 4.6 mm, 5 microm). The mobile phase was 0.1% ammonium acetate solution (using methanoic acid to adjust to pH 3.5)-acetonitrile at the flow rate of 0.5 mL x min(-1) (gradient elution), the column temperature was 40 degrees C. Descarboxyl levofloxacin, desmethyl levofloxacin and levofloxacin N-oxide were identified through comparing with the standard spectrum and the results of mass spectrometry, i.e. m/z 318.2 was descarboxyl levofloxacin, m/z 348.2 was desmethyl levofloxacin, m/z 378.1 was levofloxacin-N-oxide. This method is simple, fast, accurate and suitable for the identification of degradation products of levofloxacin.
