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  • Title: Identification of a flunixin metabolite in camel by gas chromatography-mass spectrometry.
    Author: Wasfi IA, Hadi AA, Alkatheeri NA, Barezaiq IM, ElGhazali M, Boni NS, Zorob O.
    Journal: J Chromatogr B Biomed Sci Appl; 1998 May 29; 709(2):209-15. PubMed ID: 9657217.
    Abstract:
    A flunixin metabolite, a hydroxylated product, has been identified in camel urine and plasma samples using gas chromatography-mass spectrometry (GC-MS) and GC-MS-MS in the electron impact and chemical ionization modes. Its major fragmentation pattern has been verified by GC-MS-MS in daughter ion and parent ion scan modes. The method could detect flunixin and its metabolite in camel urine after a single intravenous dose of 2.2 mg of flunixin/kg body weight for 96 and 48 h, respectively, which increases the reliability of antidoping control analysis.
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