{"brand":"Compound Laws","url":"https://compoundlaws.com/compounds/5-mapb/massachusetts/","compound":{"slug":"5_mapb","name":"5-MAPB","same_as":"https://en.wikipedia.org/wiki/5-MAPB"},"jurisdiction":{"code":"MA","name":"Massachusetts"},"as_of":"2026-10-22","answer":"As of October 22, 2026, 5-MAPB is in a legal gray area (sold in practice, exposed to an interpretive ban theory) in Massachusetts. Analog-exposed (G.L. c. 94C Sec. 1 analogue + Sec. 32 offense). Controlling source: G.L. c. 94C Sec. 1 - Definitions ('Controlled substance analogue').","forms":[{"form":"all","label":"All forms","status":"gray","state_status":null,"federal_overlay":false,"headline":"Analog-exposed (G.L. c. 94C Sec. 1 analogue + Sec. 32 offense)","rule_type":"permanent","tier":"analog_exposed","schedule_class":null,"limit":null,"effective_date":null,"verified_at":"2026-10-22","confidence":"confirmed","verbatim_excerpt":"'Controlled substance analogue', (i) a drug or substance with a chemical structure substantially similar to the chemical structure of a controlled substance in Class A, B, C, D or E ... which has a stimulant, depressant or hallucinogenic effect on the central nervous system that is substantially similar to or greater than ... a controlled substance in Class A, B, C, D or E ... a 'controlled substance analogue' shall be treated as the Class A, B, C, D or E substance of which it is a controlled substance analogue.","excerpt_source_url":"https://malegislature.gov/Laws/GeneralLaws/PartI/TitleXV/Chapter94C/Section1","citations":[{"title":"G.L. c. 94C Sec. 1 - Definitions ('Controlled substance analogue')","url":"https://malegislature.gov/Laws/GeneralLaws/PartI/TitleXV/Chapter94C/Section1","pinpoint":null,"publisher":"The General Court of the Commonwealth of Massachusetts (official)","type":"legislation","primary":true,"official":true},{"title":"Mass. Gen. Laws ch. 94C, Sec. 1 (definition of 'Controlled substance analogue')","url":"https://malegislature.gov/Laws/GeneralLaws/PartI/TitleXV/Chapter94C/Section1","pinpoint":null,"publisher":null,"type":"statute","primary":true,"official":true},{"title":"G.L. c. 94C Sec. 31 - Classes A-E schedules (5-MAPB absent; MDMA Class B)","url":"https://malegislature.gov/Laws/GeneralLaws/PartI/TitleXV/Chapter94C/Section31","pinpoint":null,"publisher":"The General Court of the Commonwealth of Massachusetts (official)","type":"legislation","primary":false,"official":true}],"history":[]}],"neighbors":[{"code":"CT","status":"legal"},{"code":"NH","status":"gray"},{"code":"NY","status":"legal"},{"code":"RI","status":"legal"},{"code":"VT","status":"illegal"}],"laws":[{"citation":"M.G.L. c. 94C § 31, Class C(e) (does NOT name it); analog reach via the \"controlled substance analogue\" definition in c. 94C § 1.","title":null,"official_url":"https://malegislature.gov/Laws/GeneralLaws/PartI/TitleXV/Chapter94C/Section31","source_label":"OFFICIAL","effective_date":null,"retrieved_date":"2026-06-19","text_hash":"bb9414240b38bb19978ad669727ae168445bb857899fd44428704c1e674227ec"},{"citation":"Mass. Gen. Laws ch. 94C, Sec. 1 (Controlled Substances Act; Definitions)","title":"Definitions -- 'Controlled substance analogue' (and related 'Controlled substance', 'Tetrahydrocannabinol', and 'Marihuana' definitions)","official_url":"https://malegislature.gov/Laws/GeneralLaws/PartI/TitleXV/Chapter94C/Section1","source_label":"OFFICIAL","effective_date":null,"retrieved_date":"2026-07-02","text_hash":"9a0f4c5c022d2a017e61bbbc952a49595112797b885de49649ff5f106ae02c27"},{"citation":"Mass. Gen. Laws ch. 94C, Sec. 1 (definition of 'Controlled substance analogue')","title":"Controlled Substances Act - Definitions - controlled substance analogue","official_url":"https://malegislature.gov/Laws/GeneralLaws/PartI/TitleXV/Chapter94C/Section1","source_label":"OFFICIAL","effective_date":null,"retrieved_date":"2026-07-20","text_hash":"96ef8a86f5adb52cbbebd4b47c071794422e6655589e147b106eaa9513b8a40d"}]}