symbescaline symbescaline symbescaline, or 3,5-diethoxy-4-methoxyphenethylamine, is a lesser-known psychedelic drug. it is an isomer of asymbescaline. symbescaline was first synthesized by alexander shulgin. in his book pihkal (phenethylamines i have known and loved), the dosage is listed as 240 mg, and the duration listed as unknown. symbescaline causes few effects, which include alertness and a threshold. very little data exists about the pharmacological properties, metabolism, and toxicity of symbescaline. symbescaline names preferred iupac name 2-(3,5-diethoxy-4-methoxyphenyl)ethan-1-amine identifiers cas number 90109-61-8 y 3d model (jsmol) interactive image chembl chembl159684 y chemspider 21106384 y pubchem cid 44374890 unii up8dy84wak comptox dashboard (epa) dtxsid10658551 inchi inchi=1s/c13h21no3/c1-4-16-11-8-10(6-7-14)9-12(17-5-2)13(11)15-3/h8-9h,4-7,14h2,1-3h3 ykey: rokmkyblapller-uhfffaoysa-n yinchi=1/c13h21no3/c1-4-16-11-8-10(6-7-14)9-12(17-5-2)13(11)15-3/h8-9h,4-7,14h2,1-3h3key: rokmkyblapller-uhfffaoyay smiles coc1c(cc(cc1occ)ccn)occ properties chemical formula c13h21no3 molar mass 239.311 g/mol except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). n verify (what is yn ?) infobox references