2-bromomescaline 2-bromomescaline 2-bromomescaline (2-br-m) is a derivative of the phenethylamine hallucinogen mescaline which has an unusual 2-bromo substitution. it is an agonist for serotonin receptors, with a binding affinity of 215 nm at 5-ht1a, 513 nm at 5-ht2a and 379 nm at 5-ht2c, so while it is around ten times more tightly binding than mescaline at 5-ht1a and 5-ht2a receptors, it is over twenty times more potent at 5-ht2c. 2-bromomescalineclinical dataatc codenoneidentifiers iupac name 2-(2-bromo-3,4,5-trimethoxyphenyl)ethanamine cas number37015-19-3 ypubchem cid16637783chemspider17574207 yuniia9m89xg7qwchemical and physical dataformulac11h16brno3molar mass290.157 g·mol−13d model (jsmol)interactive image smiles coc1=c(c(=c(c(=c1)ccn)br)oc)oc inchi inchi=1s/c11h16brno3/c1-14-8-6-7(4-5-13)9(12)11(16-3)10(8)15-2/h6h,4-5,13h2,1-3h3key:uxqbkanlbluvmk-uhfffaoysa-n