The Drug Enforcement Administration has issued a final rule temporarily listing seven fentanyl-related substances in Schedule I (83 Fed. Reg. 4580; Feb. 1, 2018). Drug codes published for two of those substances, valeryl fentanyl and ocfentanil, were corrected on March 9 (83 Fed. Reg. 10367). Temporary scheduling for the substances — valeryl fentanyl, para-fluorobutyryl fentanyl, p... Read More