4-(2-((Ethyl-d5)(4-hydroxybutyl)amino)propyl)phenol 2-hydroxypropane-1,2,3-tricarboxylate,4-(2-((Ethyl-d5)(4-hydroxybutyl)amino)propyl)phenol 2-hydroxypropane-1,2,3-tricarboxylate,"Labeled Mebeverine, intended for use as an internal standard for the quantification of Mebeverine by GC- or LC-mass spectrometry.",Mebeverine Metabolite