propynyl (psychedelic) propynyl (psychedelic) propynyl (4-propynyloxy-3,5-dimethoxyphenethylamine) is a lesser-known psychedelic drug. it is closely related in structure to mescaline. propynyl was first synthesized by alexander shulgin. in his book pihkal, the minimum dosage is listed as 80 mg, and the duration listed as 8–12 hours. propynyl produces a body load and few to no mental effects. very little data exists about the pharmacological properties, metabolism, and toxicity of propynyl. propynyl names preferred iupac name 2-ethan-1-amine identifiers cas number 952017-05-9 n 3d model (jsmol) interactive image chemspider 21106371 y pubchem cid 44719613 unii 5ag5mzj75g comptox dashboard (epa) dtxsid50660375 inchi inchi=1s/c13h17no3/c1-4-7-17-13-11(15-2)8-10(5-6-14)9-12(13)16-3/h1,8-9h,5-7,14h2,2-3h3 ykey: kniwbmmjsjhujb-uhfffaoysa-n yinchi=1/c13h17no3/c1-4-7-17-13-11(15-2)8-10(5-6-14)9-12(13)16-3/h1,8-9h,5-7,14h2,2-3h3key: kniwbmmjsjhujb-uhfffaoyam smiles coc1cc(cc(oc)c1occ#c)ccn properties chemical formula c13h17no3 molar mass 235.283 g·mol−1 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