{"brand":"Compound Laws","url":"https://compoundlaws.com/compounds/endomorphin-1/federal/","compound":{"slug":"endomorphin_1","name":"Endomorphin-1"},"federal":[{"form":"all","status":"legal","headline":"Endomorphin-1 - not federally scheduled; endogenous opioid tetrapeptide, no CSA entry and no analogue-act structural hook","tier":"unscheduled","schedule_class":null,"effective_date":"2026-09-18","verified_at":"2026-09-23","citations":[{"title":"21 CFR 1308.11 Schedule I (eCFR, up to date as of 2026-09-18)","url":"https://www.ecfr.gov/current/title-21/section-1308.11","pinpoint":null,"primary":true},{"title":"21 U.S.C. 802(32) - definition of controlled substance analogue","url":"https://uscode.house.gov/view.xhtml?req=granuleid:USC-prelim-title21-section802&num=0&edition=prelim","pinpoint":null,"primary":false}]}]}