%0 Journal Article %T Unstable Propoxyphene Metabolite Excreted in Human Urine is Detected by Liquid Chromatography-Tandem Mass Spectrometry %A Crews, Bridgit %A Mikel, Charles %A Latyshev, Sergey %A West, Robert %A Pesce, Amadeo %J Journal of Analytical Toxicology %V 33 %N 7 %P 379-383 %@ 0146-4760 %D 2009-09-01 %I Oxford University Press %~ DeepDyve