A final rule listing cyclopropyl fentanyl in Schedule I has been issued (83 Fed. Reg. 469; Jan. 4, 2018). Cyclopropyl fentanyl is another fentanyl analog “designer drug” distributed in illicit channels for its similarity of effect to heroin, fentanyl and other widely abused opioids. The Drug Enforcement Administration published a notice of intent to schedule the substance under th... Read More