{"brand":"Compound Laws","url":"https://compoundlaws.com/compounds/thca/california/","compound":{"slug":"thca","name":"THCa","same_as":"https://en.wikipedia.org/wiki/Tetrahydrocannabinolic_acid"},"jurisdiction":{"code":"CA","name":"California"},"as_of":"2026-07-18","answer":"As of July 18, 2026, THCa is illegal to sell at retail in California. THCa flower illegal - scheduled / named ban. Effective 2024-09-23.","forms":[{"form":"all","label":"All forms","status":"illegal","state_status":null,"federal_overlay":false,"headline":"THCa flower illegal - scheduled / named ban","rule_type":"emergency","tier":"schedule_i","schedule_class":null,"limit":{"type":"total_ban","value":null,"unit":null},"effective_date":"2024-09-23","verified_at":"2026-07-18","confidence":"confirmed","verbatim_excerpt":"no detectable total THC ... List of Intoxicating Cannabinoids includes ... THCA (Cal. Code Regs. tit. 17 Sec. 23000, 23010)","excerpt_source_url":"https://www.cdph.ca.gov/Programs/OLS/CDPH%20Document%20Library/DPH-24-005B-IHCannibinoidsFinalRegulationText.pdf","citations":[],"history":[]}],"neighbors":[{"code":"AZ","status":"illegal"},{"code":"NV","status":"illegal"},{"code":"OR","status":"illegal"}],"laws":[{"citation":"Cal. Bus. & Prof. Code 26070.2; Cal. Health & Safety Code 111921.6 (AB 8, eff. 2026-01-01)","title":"Cal. Bus. & Prof. Code 26070.2; Cal. Health & Safety Code 111921.6 (AB 8, eff. 2026-01-01)","official_url":"https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=BPC&sectionNum=26070.2","source_label":"OFFICIAL","effective_date":null,"retrieved_date":"2026-10-08","text_hash":"3118b1968f6e7f68ae1df758766e08d6d164ba9d6ba9c0223ce175c9ab0fb6d2"},{"citation":"Cal. Bus. & Prof. Code Sec. 26070.2, 26080, 26003 (as amended by AB 8, Ch. 248, Stats. 2025); Cal. Health & Safety Code Sec. 111920 et seq. (CDPH industrial hemp consumable regulations)","title":"Prohibited hemp-derived cannabis products (Bus. & Prof. Code Sec. 26070.2, incl. synthetic-cannabinoid ban) and CDPH isolate/serving/age rules","official_url":"https://leginfo.legislature.ca.gov/faces/billTextClient.xhtml?bill_id=202520260AB8","source_label":"OFFICIAL","effective_date":null,"retrieved_date":"2026-07-19","text_hash":"c7c31c6e95fee2a816a1449a9a7916306458e98d09f02c46d2074c8149843dd8"},{"citation":"Cal. Code Regs. tit. 17, Sec. 23010","title":"List of Intoxicating Cannabinoids","official_url":"https://www.cdph.ca.gov/Programs/OLS/CDPH%20Document%20Library/DPH-24-005B-IHCannibinoidsFinalRegulationText.pdf","source_label":"OFFICIAL","effective_date":null,"retrieved_date":"2026-07-02","text_hash":"d791bb80c847b6df42b4d1b350896c1e0dbf667dd8a91c6acd1cf7abcf5e1ed0"},{"citation":"Cal. Code Regs. tit. 17, Secs. 23000, 23005, 23100","title":"Industrial Hemp emergency regulations - definitions, age 21 requirement, and serving/package requirements (no detectable total THC per serving; five servings per package)","official_url":"https://www.cdph.ca.gov/Programs/OLS/CDPH%20Document%20Library/DPH-24-005E_Readopt_Text.pdf","source_label":"OFFICIAL","effective_date":null,"retrieved_date":"2026-07-02","text_hash":"8771df111ec669a74ee65ae6119db22c16c05ff8c12f88f6829e858aa0a23327"},{"citation":"Cal. Health & Safety Code 111921.5-111921.6","title":"Industrial hemp products; inhalable products","official_url":"https://leginfo.legislature.ca.gov/faces/billTextClient.xhtml?bill_id=202120220AB45","source_label":"OFFICIAL","effective_date":null,"retrieved_date":"2026-10-07","text_hash":"40cb4f716cffa23ccc877c0cf296c5a08b9013a0481a0772f43126ccb309bcd0"},{"citation":"Cal. Health & Safety Code Sec. 11018.5","title":"Industrial hemp; definition (Uniform Controlled Substances Act)","official_url":"https://law.justia.com/codes/california/code-hsc/division-10/chapter-1/section-11018-5/","source_label":"MIRROR","effective_date":null,"retrieved_date":"2026-07-02","text_hash":"bf10afa940b8886a4823dbefd297db89ba56cc37dbb2dd10931cfa540f33ba1f"},{"citation":"Cal. Health & Safety Code Sec. 111920","title":"Industrial hemp consumer-product definitions (AB 45); synthetic-cannabinoid exclusion; 'THC or comparable cannabinoid'","official_url":"https://law.justia.com/codes/california/code-hsc/division-104/part-5/chapter-9/article-1/section-111920/","source_label":"MIRROR","effective_date":null,"retrieved_date":"2026-07-02","text_hash":"69d75eb0dd8b05009f81b37bb6de5bec076e4b24d921046c5625a1f712f737c0"},{"citation":"Cal. Health & Safety Code Sec. 111921.5 and Sec. 111921.6","title":"Prohibited product categories; prohibition on manufacture or sale of inhalable industrial hemp products (AB 45)","official_url":"https://leginfo.legislature.ca.gov/faces/billTextClient.xhtml?bill_id=202120220AB45","source_label":"OFFICIAL","effective_date":null,"retrieved_date":"2026-07-02","text_hash":"40cb4f716cffa23ccc877c0cf296c5a08b9013a0481a0772f43126ccb309bcd0"}]}