Metabolite characterization of ambrisentan, in in vitro and in vivo matrices by UHPLC QTOF MS MS: Detection of glutathione conjugate of epoxide metabolite evidenced by in vitro GSH trapping assay Semantic Scholar Glutathione Quantification GSSG GSH Quantification Kit Oxidized Reduced Glutathione Assay Dojindo TN003277: A streamlined solution for confident detection and identification of isotope labeled glutathione trapped reactive drug Comparison of trapping profiles between d peptides and glutathione in the identification of reactive metabolites ScienceDirect