5F-CUMYL-PEGACLONE
5F-CUMYL-PEGACLONE 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.