5f-apinaca 5f-apinaca 5f-apinaca (also known as 5f-akb-48 or 5f-akb48) is an indazole-based synthetic cannabinoid that has been sold online as a designer drug. structurally it closely resembles cannabinoid compounds from patent wo 2003/035005 but with a 5-fluoropentyl chain on the indazole 1-position, and 5f-apinaca falls within the claims of this patent, as despite not being disclosed as an example, it is very similar to the corresponding pentanenitrile and 4-chlorobutyl compounds which are claimed as examples 3 and 4. not to be confused with 5f-ab-pinaca. 5f-apinacaclinical dataother names5f-akb-48, 5f-akb48legal statuslegal status ca: schedule ii de: anlage ii (authorized trade only, not prescriptible) uk: class b us: schedule i identifiers iupac name n-(adamantan-1-yl)-1-(5-fluoropentyl)-1h-indazole-3-carboxamide cas number1400742-13-3pubchem cid71711119chemspider29339965uniitx64zy5p0rcomptox dashboard (epa)dtxsid80856800 chemical and physical dataformulac23h30fn3omolar mass383.511 g·mol−13d model (jsmol)interactive image smiles o=c(nc1(c2c3)c(c2)c3c1)c4=nn(cccccf)c5=cc=cc=c54 inchi inchi=1s/c23h30fn3o/c24-8-4-1-5-9-27-20-7-3-2-6-19(20)21(26-27)22(28)25-23-13-16-10-17(14-23)12-18(11-16)15-23/h2-3,6-7,16-18h,1,4-5,8-15h2,(h,25,28)/t16-,17+,18-,23?key:ucmfsgviepxyiv-xhicyhhksa-n 5f-apinaca was first identified in south korea. it is expected to be a potent agonist of the cb1 receptor and cb2 receptor. its metabolism has been described in literature. pharmacology 5f-apinaca acts as a full agonist with a binding affinity of 1.94 nm at cb1 and 0.266 nm at cb2 cannabinoid receptors. legality in the united states, 5f-apinaca is a schedule i controlled substance. 5f-apinaca is an anlage ii controlled drug in germany since july 2013. as of october 2015, 5f-apinaca is a controlled substance in china. 5f-apinaca is banned in the czech republic.