Stopping Overdoses of Fentanyl Analogues Act This bill permanently places fentanyl-related substances as a class into schedule I of the Controlled Substances Act. A schedule I controlled substance is a drug, substance, or chemical that has a high potential for abuse; has no currently accepted medical value; and is subject to regulatory controls and administrative, civil, and criminal penalties under the Controlled Substances Act. Fentanyl-related substances are currently regulated under schedule I through a temporary order issued by the Drug Enforcement Administration. The temporary order expires on December 31, 2024.