5-mes-dmt 5-mes-dmt 5-mes-dmt (5-methylthio-n,n-dimethyltryptamine) is a lesser-known psychedelic drug. it is the 5-methylthio analog of dimethyltryptamine (dmt). 5-mes-dmt was first synthesized by alexander shulgin. in his book tihkal (tryptamines i have known and loved), the minimum dosage is listed as 15-30 mg. the duration listed as very short (less than one hour), just like dmt. 5-mes-dmt produces similar effects to dmt, but weaker. shulgin describes his feelings while on a low dose of this drug as "pointlessly stoned", although at a higher dose of 20 mg he says it is "quite intense" and suggests that a higher dose still might have full activity. 5-mes-dmt names preferred iupac name n,n-dimethyl-2-ethan-1-amine other names 5-methylthio-n,n-dimethyltryptamine identifiers cas number 5102-11-4 n 3d model (jsmol) interactive image chembl chembl31783 y chemspider 19917 y pubchem cid 21180 unii 8e8pj79k57 y comptox dashboard (epa) dtxsid50199019 inchi inchi=1s/c13h18n2s/c1-15(2)7-6-10-9-14-13-5-4-11(16-3)8-12(10)13/h4-5,8-9,14h,6-7h2,1-3h3 ykey: yogjzqgrtvmcpy-uhfffaoysa-n yinchi=1/c13h18n2s/c1-15(2)7-6-10-9-14-13-5-4-11(16-3)8-12(10)13/h4-5,8-9,14h,6-7h2,1-3h3key: yogjzqgrtvmcpy-uhfffaoyal smiles cn(ccc1=cnc2=c1c=c(sc)c=c2)c properties chemical formula c13h18n2s molar mass 234.36 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 5-mes-dmt has been the subject of only limited clinical testing, with several small behavioral studies in rats indicating that it is a less potent than 5-meo-dmt or 4-hydroxy-dmt (psilocin) but more effective than either 4-meo-dmt or 4-mes-dmt.