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FEDE Office of the Federal Register / National Archives and Records Administration · Rulemaking

Schedules of Controlled Substances: Rescheduling of Suvorexant, Lemborexant, and Daridorexant From Schedule IV Into Schedule V

Justice Department, Drug Enforcement Administration | Proposed Rule | The Drug Enforcement Administration proposes to transfer suvorexant ([(7R)-4-(5-chloro-1,3-benzoxazol-2-yl)-7-methyl-1,4- diazepan-1-yl]-[5-methyl-2-(triazol-2-yl)phenyl]methanone), lemborexant ((1R,2S)-2-[(2,4-dimethylpyrimidin-5-yl)oxymethyl]-2-(3-fluorophenyl)- N-(5-fluoropyridin-2-yl)cyclopropane-1-carboxamide), and daridorexant ([(2S)-2-(5-chloro-4-methyl-1H-benzimidazol-2-yl)-2-methylpyrrolidin-1- yl]-[5-methoxy-2-(triazol-2-yl)phenyl]methanone) from schedule IV to schedule V of the Controlled Substances Act. If finalized, this action would impose the regulatory controls and administrative, civil, and criminal sanct.

ML Reported by Maria Lopez
August 11, 2026 · 1 min read

Schedules of Controlled Substances: Rescheduling of Suvorexant, Lemborexant, and Daridorexant From Schedule IV Into Schedule V.

The item is dated 2026-08-11.

TeamCog is carrying it as a rulemaking report from FederalRegister.gov published documents API.

Justice Department, Drug Enforcement Administration | Proposed Rule | The Drug Enforcement Administration proposes to transfer suvorexant ([(7R)-4-(5-chloro-1,3-benzoxazol-2-yl)-7-methyl-1,4- diazepan-1-yl]-[5-methyl-2-(triazol-2-yl)phenyl]methanone), lemborexant ((1R,2S)-2-[(2,4-dimethylpyrimidin-5-yl)oxymethyl]-2-(3-fluorophenyl)- N-(5-fluoropyridin-2-yl)cyclopropane-1-carboxamide), and daridorexant ([(2S)-2-(5-chloro-4-methyl-1H-benzimidazol-2-yl)-2-methylpyrrolidin-1- yl]-[5-methoxy-2-(triazol-2-yl)phenyl]methanone) from schedule IV to schedule V of the Controlled Substances Act.

If finalized, this action would impose the regulatory controls and administrative, civil, and criminal sanct…

The handoff preserves the official source citation and source-completeness evidence supplied by discovery.

Editors should keep any claims tied to that source record.

Official Source

FederalRegister.gov published documents API. Accessed 2026-08-11T15:00:10.303Z.