title: Impurities in labeled diethylstilbestrol: identification of pseudodiethylstilbestrol.
abstract: Radioactive impurities known to exist in labeled diethylstilbestrol used in tissue residue studies in cattle include at least five different compounds, one of which is identified as pseudodiethylstilbestrol.
mesh_terms: D000818:Animals; D002417:Cattle; D004054:Diethylstilbestrol / Q000302:isolation & purification / Q000592:standards*; D004348:Drug Labeling; D007536:Isomerism; D011849:Radioactive Tracers
chemical_list: D011849:Radioactive Tracers; C013661:pseudodiethylstilbestrol; D004054:Diethylstilbestrol