biphenylylacetic acid [ 3-biphenylylacetic acid,4-biphenylylacetic acid,Goldshield brand of 4-biphenylylacetic acid,Traxam,Whitehall brand of 4-biphenylylacetic acid,biphenylacetic acid,biphenylylacetic acid, 14C-labeled,felbinac ] metabolite of BHD 7538; RN given refers to cpd with unspecified locants for acetic acid moities