5-meo-pyr-t 5-meo-pyr-t 5-meo-pyr-t (5-methoxy-n,n-tetramethylenetryptamine) is a lesser-known psychedelic drug. it is the 5-methoxy analog of pyr-t. 5-meo-pyr-t was first synthesized by hunt & brimblecombe, who credited s. mitzal for characterization of chemical properties. later human tests were reported by alexander shulgin, in his book tihkal. an oral dosage of 0.5 to 2 mg, and an inhaled dosage of 2–3 mg are reported. 5-meo-pyr-t causes varying reactions, such as amnesia, tinnitus, vomiting, and a 5-meo-dmt-like rushing sensation. at the highest dosage reported in tihkal, the subject describes awakening from an apparent fugue state during which they were wandering the streets, with complete amnesia upon awakening. 5-meo-pyr-t names iupac name 5-methoxy-3--1h-indole other names 5-methoxy-n,n-tetramethylenetryptamineindole, 5-methoxy-3-1-pyrrolidine"pyrrolidyl-5-methoxy-tryptamine" identifiers cas number 3949-14-2 n2426-65-5 hcl salt 3d model (jsmol) interactive image chembl chembl608537 y chemspider 16153 y pubchem cid 17053 unii l6q3u897df y comptox dashboard (epa) dtxsid50192626 inchi inchi=1s/c15h20n2o/c1-18-13-4-5-15-14(10-13)12(11-16-15)6-9-17-7-2-3-8-17/h4-5,10-11,16h,2-3,6-9h2,1h3 ykey: kaasyknznpwpqg-uhfffaoysa-n yinchi=1/c15h20n2o/c1-18-13-4-5-15-14(10-13)12(11-16-15)6-9-17-7-2-3-8-17/h4-5,10-11,16h,2-3,6-9h2,1h3key: kaasyknznpwpqg-uhfffaoyaa smiles o(c3ccc1c(c(c1)ccn2cccc2)c3)c properties chemical formula c15h20n2o molar mass 244.338 g·mol−1 appearance off-white oil density 200.3g/cm3 melting point 164 to 167 °c (327 to 333 °f; 437 to 440 k) melting point given for hydrochloride salt. boiling point 160 to 170 °c (320 to 338 °f; 433 to 443 k) boiling point for freebase at 0.05mm/hg. log p 2.75270 vapor pressure 7.42x10−07mm/hg refractive index (nd) 1.614 pharmacology routes ofadministration oral, vaporized pharmacokinetics: biological half-life unknown, likely under several hours. duration of action several hours. legal status us: unregulated human use may be restricted under the federal analog act. hazards flash point 200.3 °c (392.5 °f; 473.4 k) lethal dose or concentration (ld, lc): ldlo (lowest published) 6250 μg/kg (rat) 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 pharmacology testing was performed on rats using this compound while characterizing various agonists of the 5-ht7 receptor. it is an agonist with a ki value of 630.96nm. very little other data exists about the pharmacological properties, metabolism, and toxicity of 5-meo-pyr-t.