Fig. 4From: Untargeted metabolomics reveals the effect of lovastatin on steroid-induced necrosis of the femoral head in rabbitsIdentification of a selected marker. a Peak of potential biomarker of m/z 494 in extracted ion chromatogram with positive mode. b Compound structure and corresponding mass spectrum. c MS/MS spectrum on the collision energy was 20 eV. d standard MS/MS fragmentation in Metlin DatabasesBack to article page