Pharmacological characterization of novel synthetic opioids (NSO) found in the recreational drug marketplace
Keywords: Analgesia; Butyrylfentanyl; Mu-opioid receptor; MT-45; U-47700; DAMGO; [D-Ala2,N-MePhe4,Gly-ol]-enkephalin; DPDPE; [D-Pen2, D-Pen5]-enkephalin; DOR-1; delta-opioid receptor; GTPγS; guanosine 5â²-O-[gamma-thio]triphosphate; KOR-1; kappa-opioid receptor;