5-MeO-NBpBrT (5-Methoxy-N-(4-bromobenzyl)tryptamine) is a N-substituted member of the methoxytryptamine family of compounds. Like other such compounds it acts as an antagonist for the 5-HT2Areceptor, with a claimed 100x selectivity over the closely related 5-HT2C receptor.[1] While N-benzyl substitution of psychedelic phenethylamines often results in potent 5-HT2A agonists, it had been thought that N-benzyl tryptamines show much lower efficacy and are either very weak partial agonists or antagonists at 5-HT2A,[2][3] though more recent research has shown stronger agonist activity for 3-substituted benzyl derivatives.[4] Extending the benzyl group to a substituted phenethyl can also recover agonist activity in certain cases.[5]
^Glennon RA, Dukat M, el-Bermawy M, Law H, De los Angeles J, Teitler M, et al. (June 1994). "Influence of amine substituents on 5-HT2A versus 5-HT2C binding of phenylalkyl- and indolylalkylamines". Journal of Medicinal Chemistry. 37 (13): 1929–35. doi:10.1021/jm00039a004. PMID8027974.