3-Phenylpropanoylfentanyl (β'-phenylfentanyl) is an opioidanalgesic that is an analog of fentanyl, which was invented in 1981,[2] and has been sold as a designer drug, first identified in March 2017 in Sweden.[3]
^Drug Enforcement Administration, Department of Justice (2018). "Schedules of Controlled Substances:Temporary Placement of Fentanyl-Related Substances in Schedule I. Temporary amendment; temporary scheduling order". Federal Register. 83 (25): 5188–92. PMID29932611.
^Zhu YQ, Ge GL, Fang SN, Zhu YC, Dai QY, Tan ZY, Huang ZM, Chen XJ (March 1981). "[Studies on potent analgesics. I. Synthesis and analgesic activity of derivatives of fentanyl (author's transl)]". Yao Xue Xue Bao = Acta Pharmaceutica Sinica. 16 (3): 199–210. PMID6264735.