pti-3 pti-3 pti-3 is an indole-3-thiazole based synthetic cannabinoid which has been sold as a designer drug. it was first identified in hungary in 2020, and was made illegal in italy in june 2021. pti-3legal statuslegal status ca: schedule ii de: npsg (industrial and scientific use only) uk: class b identifiers iupac name n-(methyl)-2-methoxy-n-methylethanamine pubchem cid162623756chemspider79413292uniibe9l8378luchemical and physical dataformulac21h28fn3osmolar mass389.53 g·mol−13d model (jsmol)interactive image smiles coccn(c)cc1csc(n1)c1cn(cccccf)c2ccccc21 inchi inchi=1s/c21h28fn3os/c1-24(12-13-26-2)14-17-16-27-21(23-17)19-15-25(11-7-3-6-10-22)20-9-5-4-8-18(19)20/h4-5,8-9,15-16h,3,6-7,10-14h2,1-2h3key:lxqiihjbhsfwqw-uhfffaoysa-n