From: Activation profiles of opioid ligands in HEK cells expressing δ opioid receptors
LIGAND | AFFINITY Ki (nM) |
---|---|
DPDPE | 0.7 ± 0.3 |
Fentanyl | 242.5 ± 102.5 |
Morphine | 68.5 ± 19.5 |
Nalbuphine | 77 ± 8 |
Nalorphine | 38.5 ± 4.0 |
WIN 44,441 | 2.6 ± 0.9 |
Xorphanol | 1.0 ± 0.2 |