Schedules of Controlled Substances: Extension of Temporary Placement of cyclopentyl fentanyl, isobutyryl fentanyl, para-chloroisobutyryl fentanyl, para-methoxybutyryl fentanyl, and valeryl fentanyl in Schedule I of the Controlled Substances Act

The Acting Administrator of the Drug Enforcement Administration is issuing this temporary scheduling order to extend the temporary schedule I status of cyclopentyl fentanyl (N-(1- phenethylpiperidin-4-yl)-N-phenylcyclopentanecarboxamide), isobutyryl fentanyl (N-(1-phenethylpiperidin-4-yl)-N-phenylisobutyramide), para- chloroisobutyryl fentanyl (N-(4-chlorophenyl)-N-(1-phenethylpiperidin- 4-yl)isobutyramide), para-methoxybutyryl fentanyl (N-(4-methoxyphenyl)- N-(1-phenethylpiperidin-4-yl)butyramide), and valeryl fentanyl (N-(1- phenethylpiperidin-4-yl)-N-phenylpentanamide) including their isomers, esters, ethers, salts, and salts of isomers, esters and ethers. The schedule I status of cyclopentyl fentanyl, isobutyryl fentanyl, para- chloroisobutyryl fentanyl, para-methoxybutyryl fentanyl, and valeryl fentanyl currently is in effect until February 1, 2020. This temporary order will extend the temporary scheduling of cyclopentyl fentanyl, isobutyryl fentanyl, para-chloroisobutyryl fentanyl, para- methoxybutyryl fentanyl, and valeryl fentanyl for one year, or until the permanent scheduling action for these substances is completed, whichever occurs first.