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Ball-and-stick model of 5-MAPB molecule
Systematic (IUPAC) name
Clinical data
Routes of
Oral, Insufflated, Rectal
Legal status
Legal status
CAS Number 1354631-77-8
PubChem CID 102336592
ChemSpider 32078887
Chemical data
Formula C12H15NO
Molar mass 189.25 g/mol (freebase)
225.7 g/mol (HCl salt)

5-MAPB (1-(benzofuran-5-yl)-N-methylpropan-2-amine) is an entactogenic designer drug similar to MDMA on its structure and effects.[1]



5-MAPB is not listed itself in the CDSA but since it is structurally related to MDMA it would be considered illegal in Canada.[2]


As of October 2015 5-MAPB is a controlled substance in China.[3]


5-MAPB was originally banned in the UK in June 2013 under a Temporary class drug order.[4] On March 5, 2014 the UK Home Office announced that 5-MAPB would be made a class B drug on 10 June 2014 alongside every other benzofuran entactogen and many structurally related drugs.[5]

Metabolism and toxicity[edit]

Little formal knowledge exists on 5-MAPB. It does not share the neurotoxicity of MDA caused by the alpha-methyldopamine metabolite.[6][7][8] A study in rats indicated that the major metabolites of 5-MAPB are 5-APB and 3-carboxymethyl-4-hydroxymethamphetamine.[9]


  1. ^ "Temporary class drug order report on 5-6APB and NBOMe compounds". UK Home Office. 4 Jun 2013. Retrieved 2013-07-10. 
  2. ^ "'Schedule I'". Government Of Canada. 2014-12-12. 
  3. ^ "关于印发《非药用类麻醉药品和精神药品列管办法》的通知" (in Chinese). China Food and Drug Administration. 27 September 2015. Retrieved 1 October 2015. 
  4. ^ "'NBOMe' and 'Benzofury' banned". UK Home Office. 2013-06-04. Retrieved 10 April 2014. 
  5. ^ UK Home Office (2014-03-05). "The Misuse of Drugs Act 1971 (Ketamine etc.) (Amendment) Order 2014". UK Government. Retrieved 2014-03-11. 
  6. ^ McCann UD; Ricaurte GA (1991). "Major metabolites of (±)3,4-methylenedioxyamphetamine (MDA) do not mediate its toxic effects on brain serotonin neurons". Brain Research. 545 (1–2): 279–282. doi:10.1016/0006-8993(91)91297-E. PMID 1860050. 
  7. ^ Miller RT; Lau SS; Monks TJ (1997). "2,5-Bis-(glutathion-S-yl)-alpha-methyldopamine, a putative metabolite of (+/-)-3,4-methylenedioxyamphetamine, decreases brain serotonin concentrations". Eur J Pharmacol. 323 (2–3): 173–80. doi:10.1016/S0014-2999(97)00044-7. PMID 9128836. 
  8. ^ Conway EL; Louis WJ; Jarrott B (1978). "Acute and chronic administration of alpha-methyldopa: regional levels of endogenous and alpha-methylated catecholamines in rat brain". Eur J Pharmacol. 52 (3–4): 271–80. doi:10.1016/0014-2999(78)90279-0. PMID 729639. 
  9. ^ Welter, Jessica; Kavanagh, Pierce; Meyer, Markus R.; Maurer, Hans H. (2014). "Benzofuran analogues of amphetamine and methamphetamine: Studies on the metabolism and toxicological analysis of 5-APB and 5-MAPB in urine and plasma using GC-MS and LC-(HR)-MSn techniques". Analytical and Bioanalytical Chemistry. 407 (5): 1371–88. doi:10.1007/s00216-014-8360-0. PMID 25471293.