{"brand":"Compound Laws","url":"https://compoundlaws.com/compounds/thcp/rhode-island/","compound":{"slug":"thcp","name":"THCP","same_as":"https://en.wikipedia.org/wiki/Tetrahydrocannabiphorol"},"jurisdiction":{"code":"RI","name":"Rhode Island"},"as_of":"2026-07-18","answer":"As of July 18, 2026, THCP is illegal to sell at retail in Rhode Island. Synthetic-derived prohibition. Effective 2025-12-08.","forms":[{"form":"all","label":"All forms","status":"illegal","state_status":null,"federal_overlay":false,"headline":"Synthetic-derived prohibition","rule_type":"permanent","tier":"schedule_i","schedule_class":null,"limit":null,"effective_date":"2025-12-08","verified_at":"2026-07-18","confidence":"under_review","verbatim_excerpt":"the natural or synthetic equivalents of the substances contained in the plant ... or any synthetic substances, compounds, salts, or derivatives of the plant or chemicals and their isomers with similar chemical structure (THC definition reaching synthetics, 560-RICR-10-20-1)","excerpt_source_url":"https://rules.sos.ri.gov/regulations/part/560-RICR-10-20-1","citations":[],"history":[]}],"neighbors":[{"code":"CT","status":"illegal"},{"code":"MA","status":"illegal"}],"laws":[{"citation":"560-RICR-10-20-1 (RI Cannabis Control Commission - Industrial Hemp Program), Sec. 1.5 (Definitions), Sec. 1.6, and Sec. 1 Product Prohibitions","title":"560-RICR-10-20-1 - Rhode Island Industrial Hemp Program (Cannabis Control Commission): 'THC' and 'Industrial hemp' definitions, synthetic-cannabinoid prohibition, product prohibitions, and total-THC mg caps","official_url":"https://rules.sos.ri.gov/regulations/part/560-10-20-1","source_label":"OFFICIAL","effective_date":null,"retrieved_date":"2026-07-02","text_hash":"29becc53eff103a532530c661fe4334766e9b7734065bf92cbb792755fff471a"},{"citation":"560-RICR-10-20-1 Section 1.5(A)(2)","title":"Rhode Island Industrial Hemp Program - Definitions - \"Acceptable Hemp THC level\"","official_url":"https://rules.sos.ri.gov/regulations/part/560-10-20-1","source_label":"OFFICIAL","effective_date":null,"retrieved_date":"2026-07-18","text_hash":"362152222fa348ad1c02149507c331f3052ee7a725472ae094c422022c082a54"},{"citation":"560-RICR-10-20-1 Section 1.6(I) (conversion/synthetic-cannabinoid prohibition); Section 1.5(A)(2) (Acceptable Hemp THC Level)","title":"Rhode Island Industrial Hemp Program -- Prohibition on conversion of cannabinoids and sale of synthetic cannabinoids; Acceptable Hemp THC Level","official_url":"https://rules.sos.ri.gov/regulations/part/560-10-20-1","source_label":"OFFICIAL","effective_date":null,"retrieved_date":"2026-07-19","text_hash":"f16d0e52c367607efb6667b03500d0d161b979cb968139971d0aadc911a9ae6b"},{"citation":"560-RICR-10-20-1, 1.5(A)(2), 1.11(G)(1)(a), 1.11(K); R.I. Gen. Laws 2-26-3","title":"560-RICR-10-20-1, 1.5(A)(2), 1.11(G)(1)(a), 1.11(K); R.I. Gen. Laws 2-26-3","official_url":"https://rules.sos.ri.gov/Regulations/part/560-10-20-1","source_label":"OFFICIAL","effective_date":null,"retrieved_date":"2026-10-07","text_hash":"8fee22cc17331a5888133f4e6265fb91e9c1a72030c2d6dcb685a1ad7306ec7d"},{"citation":"R.I. Gen. Laws Sec. 2-26-3 (Hemp Growth Act - Definitions)","title":"R.I. Gen. Laws Sec. 2-26-3 - Definitions (Hemp Growth Act)","official_url":"https://law.justia.com/codes/rhode-island/title-2/chapter-2-26/section-2-26-3/","source_label":"MIRROR","effective_date":null,"retrieved_date":"2026-07-02","text_hash":"d8dad2826b287271f24cb10c69683e2c75ae8d4005ea60baa001d4a567c475c5"},{"citation":"R.I.G.L. 44-20-61","title":"Product restrictions on electronic nicotine-delivery system products","official_url":"https://webserver.rilegislature.gov/Statutes/TITLE44/44-20/44-20-61.htm","source_label":"OFFICIAL","effective_date":null,"retrieved_date":"2026-10-07","text_hash":"81fc50395983bf89c8125ac5a2ec0524ddb49d4334f9dd208e9f39d57ecdf9bd"}]}