{"brand":"Compound Laws","url":"https://compoundlaws.com/compounds/endomorphin-1/indiana/","compound":{"slug":"endomorphin_1","name":"Endomorphin-1","same_as":"https://en.wikipedia.org/wiki/Endomorphin"},"jurisdiction":{"code":"IN","name":"Indiana"},"as_of":"2026-07-18","answer":"As of July 18, 2026, Endomorphin-1 is legal to sell at retail in Indiana. Unscheduled - legal as research-use-only; no operative instrument reaches a structurally-dissimilar opioid peptide. Controlling source: IC 35-48-1-9.3 (controlled substance analog).","forms":[{"form":"all","label":"All forms","status":"legal","state_status":null,"federal_overlay":false,"headline":"Unscheduled - legal as research-use-only; no operative instrument reaches a structurally-dissimilar opioid peptide","rule_type":"permanent","tier":"unscheduled","schedule_class":null,"limit":null,"effective_date":null,"verified_at":"2026-07-18","confidence":"confirmed","verbatim_excerpt":"IC 35-48-1-9.3: \"'Controlled substance analog' means a substance that, due to its chemical structure ... meets the following criteria: (1) The substance is substantially similar to a controlled substance classified under IC 35-48-2. (2) The substance has a narcotic, stimulant, depressant, or hallucinogenic effect ... substantially similar to or greater than\" a controlled substance; (c) \"'substantially similar' ... means ... a single difference in the structural formula that substitutes one (1) atom or functional group for another ...\" [Conjunctive + single-atom structure test - fails for a peptide.]","excerpt_source_url":"https://iga.in.gov/pdf-documents/123/2024/house/bills/HB1079/HB1079.01.INTR.pdf","citations":[{"title":"IC 35-48-1-9.3 (controlled substance analog)","url":"https://law.justia.com/codes/indiana/2024/title-35/article-48/chapter-1/section-35-48-1-9-3/","pinpoint":null,"publisher":"Code mirror","type":"statute","primary":true,"official":true},{"title":"IC 35-48-1-19 (opiate def)","url":"https://law.justia.com/codes/indiana/2024/title-35/article-48/chapter-1/section-35-48-1-9-3/","pinpoint":null,"publisher":"Code mirror","type":"statute","primary":false,"official":true}],"history":[]}],"neighbors":[{"code":"IL","status":"legal"},{"code":"KY","status":"legal"},{"code":"MI","status":"legal"},{"code":"OH","status":"legal"}],"laws":[{"citation":"IC 35-31.5-2-321(1)","title":"'Synthetic Drug' (Indiana Code) -- definitional list naming benzofuran parents with an in-definition analog sweep; incorporated into Schedule I by IC 35-48-2-4","official_url":"https://iga.in.gov/laws/2025/ic/titles/35/articles/31.5/chapters/2/sections/321","source_label":"MIRROR","effective_date":null,"retrieved_date":"2026-07-20","text_hash":"b163f620c7c8ee20ff517733941fc1b83c1187be16762017ef58199ec59e21ea"},{"citation":"Ind. Code § 35-48-2-4(d)(48) — Schedule I hallucinogenic substances. Added by P.L.48-2023, SEC.4 (eff. July 1, 2023).","title":null,"official_url":"https://law.justia.com/codes/indiana/title-35/article-48/chapter-2/section-35-48-2-4/","source_label":"MIRROR","effective_date":null,"retrieved_date":"2026-06-19","text_hash":"c72ced5bb263abbb3b1c3c36cabb756f5bee4b35962afb9440225edfaf1c3685"}]}