piberaline piberaline piberaline (egyt-475; trelibet) is a psychoactive drug and member of the piperazine chemical class which was developed in the 1980s. it has stimulant and antidepressant effects which are thought to be due largely to its active metabolite benzylpiperazine. it was researched to a limited extent in hungary and spain, but was not widely accepted and does not seem to be in current use, although a closely related drug befuraline with similar effects has been slightly more successful. piberalineclinical datatrade namestrelibetatc codenoneidentifiers iupac name -pyridin-2-ylmethanone cas number39640-15-8pubchem cid65975chemspider59374unii8m09p36809comptox dashboard (epa)dtxsid40192751 chemical and physical dataformulac17h19n3omolar mass281.359 g·mol−13d model (jsmol)interactive image smiles c1cn(ccn1cc2=cc=cc=c2)c(=o)c3=cc=cc=n3 inchi inchi=1s/c17h19n3o/c21-17(16-8-4-5-9-18-16)20-12-10-19(11-13-20)14-15-6-2-1-3-7-15/h1-9h,10-14h2key:tzfubyyadabeav-uhfffaoysa-n (verify) synthesis patent: ~99%: ~75%: 2-chloropyridine, carbon monoxide & bzp reacted together. or from picolinic acid & bzp.