W-18

W-18 Health Canada has identified through scientific analysis that some pills being sold in Calgary as fentanyl—the typically blue-green, round fake OxyContin pills—actually contained a drug 100 times more potent than fentanyl, W-18. This synthetic is 1-(4-Nitrophenylethyl)piperidylidene-2-(4-chlorophenyl)sulfonamide a highly potent opioid agonist with a distinctive chemical structure which is not closely...