O-Desmethyl-cis-tramadol (hydrochloride) (CRM) (Item No. 18751) is a certified reference material that is structurally categorized as an opioid. It is the main metabolite of cis-tramadol (Item Nos. ISO60149 | 15919). O-Desmethyl-cis-tramadol has ~400-500-fold higher affinity for μ-opioid receptors than the parent compound. However, O-desmethyl-cis-tramadol poorly suppresses the human serotonin transporter, unlike cis-tramadol. This product is intended for research and forensic applications.
