{"brand":"Compound Laws","url":"https://compoundlaws.com/compounds/thca/oregon/","compound":{"slug":"thca","name":"THCa","same_as":"https://en.wikipedia.org/wiki/Tetrahydrocannabinolic_acid"},"jurisdiction":{"code":"OR","name":"Oregon"},"as_of":"2026-10-07","answer":"As of October 7, 2026, THCa is illegal to sell at retail in Oregon. Illegal outside the OLCC marijuana program: total delta-9 basis (THCA x 0.877, ORS 475C.009) puts THCa flower over 0.3%. Effective 2022-01-01. Controlling source: ORS Ch. 475C / 571 - total delta-9 THC + 'adult use cannabinoid' diversion of D8/artificial.","forms":[{"form":"all","label":"All forms","status":"illegal","state_status":null,"federal_overlay":false,"headline":"Illegal outside the OLCC marijuana program: total delta-9 basis (THCA x 0.877, ORS 475C.009) puts THCa flower over 0.3%","rule_type":"permanent","tier":"schedule_i","schedule_class":null,"limit":null,"effective_date":"2022-01-01","verified_at":"2026-10-07","confidence":"confirmed","verbatim_excerpt":"'Total delta-9-tetrahydrocannabinol' ... means the sum of the concentration or mass of delta-9-THCA multiplied by 0.877 plus the concentration or mass of delta-9-THC. (ORS 475C.009(42))","excerpt_source_url":"https://www.oregonlegislature.gov/bills_laws/ors/ors475C.html","citations":[{"title":"ORS Ch. 475C / 571 - total delta-9 THC + 'adult use cannabinoid' diversion of D8/artificial","url":"https://www.oregonlegislature.gov/bills_laws/ors/ors475C.html","pinpoint":null,"publisher":"Oregon State Legislature","type":"gov","primary":true,"official":true},{"title":"Enrolled House Bill 3000 (2021 Regular Session) - secs. 1, 5, 12, 36, 51","url":"https://olis.oregonlegislature.gov/liz/2021R1/Downloads/MeasureDocument/HB3000/Enrolled","pinpoint":null,"publisher":"Oregon Legislative Assembly (OLIS)","type":"statute","primary":true,"official":true}],"history":[{"date":"2026-09-23","field":"status","from":"restricted","to":"illegal"},{"date":"2026-09-23","field":"headline","from":"total-THC basis kills THCa flower","to":"Illegal outside the OLCC marijuana program: total delta-9 basis (THCA x 0.877, ORS 475C.009) puts THCa flower over 0.3%"},{"date":"2026-09-23","field":"status","from":"illegal","to":"restricted"},{"date":"2026-09-23","field":"status","from":"restricted","to":"illegal"},{"date":"2026-09-22","field":"effectively_prohibitive","from":"false","to":"true"},{"date":"2026-09-22","field":"status","from":"illegal","to":"restricted"},{"date":"2026-07-25","field":"effective_date","from":null,"to":"2022-01-01"}]}],"neighbors":[{"code":"CA","status":"illegal"},{"code":"ID","status":"illegal"},{"code":"NV","status":"illegal"},{"code":"WA","status":"legal"}],"laws":[{"citation":"OAR 845-025-2760(3)","title":"THC Concentration Limits for Industrial Hemp and Hemp Items - Concentration, serving size, and container limits","official_url":"https://secure.sos.state.or.us/oard/view.action?ruleNumber=845-025-2760","source_label":"OFFICIAL","effective_date":null,"retrieved_date":"2026-07-18","text_hash":"c8c5b9075063a91ca7a8b2286d0244b1b29e0cac3e99b4d31e0fa78175740f78"},{"citation":"OAR 845-026-0300, -0400, -0410; ORS 571 / 475C (hemp items)","title":"OAR 845-026-0300, -0400, -0410; ORS 571 / 475C (hemp items)","official_url":"https://www.oregon.gov/olcc/marijuana/pages/hemp-registry-faqs.aspx","source_label":"OFFICIAL","effective_date":null,"retrieved_date":"2026-10-07","text_hash":"54c935cb7a7ded6b8ed8a4b5e93e6047644f4edbe0538ee57e8d2f3b537284ac"},{"citation":"OLCC Hemp-Derived Beverage Guidance (artificially derived cannabinoids), implementing OAR 845-026-0410 and ORS 571.309/571.339","title":"Prohibition on sale of artificially derived cannabinoids (HHC named) in Oregon","official_url":"https://www.oregon.gov/olcc/marijuana/pages/hemp-beverage-guidance.aspx","source_label":"OFFICIAL","effective_date":null,"retrieved_date":"2026-07-19","text_hash":"e23ab3420a1c13e0492935add89f09f4c83be6fb12ab31f7b5ec37bb17f6cce7"},{"citation":"ORS 431A.175(1)(b), (2); OAR 845-026-0300","title":"ORS 431A.175(1)(b), (2); OAR 845-026-0300","official_url":"https://www.oregonlegislature.gov/bills_laws/ors/ors431A.html","source_label":"OFFICIAL","effective_date":null,"retrieved_date":"2026-10-07","text_hash":"b842f61aab77ff9b30cdf7f32214e7dab2836062b206e99205bb43ccd22cb34f"},{"citation":"ORS 475C.009 (Definitions for ORS 475C.005 to 475C.525), subds. (1), (2), (3), (42)","title":"ORS 475C.009 - Definitions ('Adult use cannabinoid', 'Adult use cannabis item', 'Artificially derived cannabinoid', 'Total delta-9-tetrahydrocannabinol')","official_url":"https://oregon.public.law/statutes/ors_475c.009","source_label":"MIRROR","effective_date":null,"retrieved_date":"2026-07-02","text_hash":"c48937457ccd8b6960c8e5f95560eee1db2de10f3089230c9e400e226314ac46"}]}