fastandbulbous
Bluelight Crew
^ 3,4-DMPEA fits into the active site of MAO without preventing it's conformational change to the active form, which means it gets chewed up and enough never reaches the bits of the brain it needs to reach to exert an effect. The reason mescaline is active is because the close grouping of the 3,4,5-trimethoxy groups means it doesn't fit the active site in a way that allows conformational change of MAO to the active form. The slight change of moving one methoxy group to give 2,4,5-TMPEA results in an inactive compound as the 3,4-substitution pattern seen with catecholamines isn't sterically hindered by the third methoxy group on the 2 position, hence it's chewed up & spat out by MAO.
Equally, 2C-T (2,5-dimethoxy-4-methylthioPEA) is active because replacing the 4-position oxygen of 2,4,5-TMPEA with a sulphur atom (directly below oxygen in the periodic table) results in a molecule that doesn't fit properly into the active site to allow the active form of the enzyme & hence isn't chewed up & deactivated by MAO (also probably accounts for the significant MAOI activity of the 2C-T-x/aleph series)
As to the fate of the 3-benzazepines, I defer to the great god, Fuckknows!
Equally, 2C-T (2,5-dimethoxy-4-methylthioPEA) is active because replacing the 4-position oxygen of 2,4,5-TMPEA with a sulphur atom (directly below oxygen in the periodic table) results in a molecule that doesn't fit properly into the active site to allow the active form of the enzyme & hence isn't chewed up & deactivated by MAO (also probably accounts for the significant MAOI activity of the 2C-T-x/aleph series)
As to the fate of the 3-benzazepines, I defer to the great god, Fuckknows!

