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  • Title: Direct detection of boldenone sulfate and glucuronide conjugates in horse urine by ion trap liquid chromatography-mass spectrometry.
    Author: Pu F, McKinney AR, Stenhouse AM, Suann CJ, McLeod MD.
    Journal: J Chromatogr B Analyt Technol Biomed Life Sci; 2004 Dec 25; 813(1-2):241-6. PubMed ID: 15556539.
    Abstract:
    A study of the equine phase II metabolism of the anabolic agent boldenone is reported. Boldenone sulfate, boldenone glucuronide and their C17-epimers were synthesised as reference standards in our lab and a method was developed for their detection in a horse urine matrix. Solid phase extraction was used to purify the analytes, which were then detected by ion trap LC/MS. Negative and positive ionisation mode MS(2) were used for the detection of sulfate and glucuronide conjugates, respectively. Boldenone sulfate and 17-epiboldenone glucuronide were detected as the major and minor phase II metabolites, respectively, in horse urine samples collected following the administration of boldenone undecylenate by intramuscular injection.
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