. . "3-Methylthiofentanyl binds to the mu, delta, and kappa opioid receptors. These ultimately lead to decreased pain sensation as well as a number of side effects, such as euphoria, sedation, depressed breathing."@en . . . . . . . . . . "Humans and other mammals"@en . . . "3-Methyl-thiofentanyl"@en . . . . "3-Methylthiofentanyl"@en . . . . . . . . . . "illicit"@en . . "experimental"@en . "Side effects of fentanyl analogues are similar to those of fentanyl itself, which include itching, nausea and potentially serious respiratory depression which can be life-threatening."@en . "86052-04-2"@en . . . . . . . . "3-Methyl-thiofentanyl is an opioid analgesic that is an analogue of fentanyl."@en . .