DEA Temporarily Adds Fentanyl-Related Synthetic Opioids to Schedule I of Drug List

The Drug Enforcement Administration is temporarily adding seven fentanyl-related synthetic opioids to Schedule I of the Controlled Substances Act, it said. The substances are valeryl fentanyl, parafluorobutyryl fentanyl, para-methoxybutyryl fentanyl, para-chloroisobutyryl fentanyl, isobutyryl fentanyl, cyclopentyl fentanyl and ocfentanil. The listing takes effect Feb. 1, and will be in effect for up to three years.