emm (psychedelic) emm (psychedelic) emm (2-ethoxy-4,5-dimethoxyamphetamine) is a lesser-known substituted amphetamine. it is a dimethoxy-ethoxy analog of trimethoxyamphetamine (tma-2). emm was first synthesized by alexander shulgin. in his book pihkal, both the dosage and duration are unknown. emm produces few to no effects. very little data exists about the pharmacological properties, metabolism, and toxicity of emm. emm names preferred iupac name 1-(2,4,5-trimethoxyphenyl)propan-2-amine identifiers cas number 23693-30-3 y 3d model (jsmol) interactive imageinteractive image chemspider 21106299 y pubchem cid 44719565 unii 8s8uh2m5jv y comptox dashboard (epa) dtxsid40660364 inchi inchi=1s/c13h21no3/c1-5-17-11-8-13(16-4)12(15-3)7-10(11)6-9(2)14/h7-9h,5-6,14h2,1-4h3 ykey: skrntjddbvaegb-uhfffaoysa-n yinchi=1/c13h21no3/c1-5-17-11-8-13(16-4)12(15-3)7-10(11)6-9(2)14/h7-9h,5-6,14h2,1-4h3key: skrntjddbvaegb-uhfffaoyae smiles c1(=cc(=c(c=c1cc(c)n)oc)oc)occcoc1cc(occ)c(cc1oc)cc(c)n properties chemical formula c13h21no3 molar mass 239.315 g·mol−1 except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). y verify (what is yn ?) infobox references