(+)-Norpropoxyphene-d5 (maleate)

(+)-Norpropoxyphene-d5 (maleate) (Item No. 15838) is an analytical reference standard intended for use as an internal standard for the quantification of norpropoxyphene (Item No. 15291) by GC- or LC-MS. Norpropoxyphene is categorized as an opioid.1 It is a metabolite of propoxyphene (Item Nos. 22769| ISO60184).2 This product is intended for research and forensic applications.WARNING This product is not for human or veterinary use.

[1] ANNE DEPRIEST. Urine drug testing of chronic pain patients. III. Normetabolites as biomarkers of synthetic opioid use.[J]. Journal of analytical toxicology, 2010, 34 8: 444-449. DOI: 10.1093/jat/34.8.444
[2] BRIDGIT CREWS. Unstable propoxyphene metabolite excreted in human urine is detected by liquid chromatography-tandem mass spectrometry.[J]. Journal of analytical toxicology, 2009, 33 7: 379-383. DOI: 10.1093/jat/33.7.379