Five fentanyl substances were transferred from temporary Schedule I control to permanent status, effective Nov. 29 (83 Fed. Reg. 61320). The five — furanyl fentanyl, 4-fluoroisobutyryl fentanyl, acryl fentanyl, tertrahydrofuranyl fentanyl, and ocfentanil — had been listed temporarily in Schedule I for several years following findings that they posed an imminent hazard to public saf... Read More