Report on a New Opioid NPS: Chemical and In Vitro Functional Characterization of a Structural Isomer of the MT-45 Derivative Diphenpipenol., Cannaert, Annelies, Hulpia Fabian, Risseeuw Martijn, Van Uytfanghe Katleen, Deconinck Eric, Van Calenbergh Serge, Blanckaert Peter, and Stove Christophe , J Anal Toxicol, 2021 Feb 13, Volume 45, Issue 2, (2021)