5f-cumyl-pegaclone 5f-cumyl-pegaclone 5f-cumyl-pegaclone (5f-sgt-151, sgt-269) is a gamma-carboline based synthetic cannabinoid that has been sold as a designer drug, first being identified in germany in 2017. it acts as a potent full agonist of the cb1 receptor. it appears to be more toxic than related compounds such as cumyl-pegaclone, and has been linked to numerous serious adverse reactions, some fatal. 5f-cumyl-pegaclonelegal statuslegal status ca: schedule ii de: npsg (industrial and scientific use only) uk: under psychoactive substances act identifiers iupac name 2,5-dihydro-2-(1-methyl-1-phenylethyl)-5-(5-fluoropentyl)-1h-pyridoindol-1-one cas number2377403-49-9pubchem cid134818048chemspider73962276unii7s7ifq9ppgchemical and physical dataformulac25h27fn2omolar mass390.502 g·mol−13d model (jsmol)interactive image smiles cc(c)(c1ccccc1)n4c=cc3n(cccccf)c2ccccc2c3c4=o inchi inchi=1s/c25h27fn2o/c1-25(2,19-11-5-3-6-12-19)28-18-15-22-23(24(28)29)20-13-7-8-14-21(20)27(22)17-10-4-9-16-26/h3,5-8,11-15,18h,4,9-10,16-17h2,1-2h3key:smrrorrdowxerz-uhfffaoysa-n