Taranabant is a highly potent and selective cannabinoid 1 (CB1) receptor inverse agonist that inhibits the binding and functional activity of various agonists, with a binding Ki of 0.13 nM for the human CB1R in vitro.
CB2R-IN-1 is a potent cannabinoid CB2 receptor inverse agonist with a Ki of 0.9 nM.
CB-25 is a ligand of CB1 cannabinoid receptors, acting as a partial agonist. CB-25 enhances Forskolin (HY-15371)-induced cAMP formation in cancer cells but not hCB1-CHO cells[1].
Tetrahydromagnolol (Magnolignan), a main metabolite of Magnolol, is a potent and selective cannabinoid CB2 receptor agonist with an EC50 of 170 nM and a Ki of 416 nM. Tetrahydromagnolol possesses 20-fold more selective for CB2 receptor than CB1 receptor. Tetrahydromagnolol is also a weak GPR55 receptor antagonist[1].
Drinabant (AVE1625) is an orally active CB1 receptor antagonist. Drinabant (AVE1625) inhibits the agonist-stimulated calcium signal with IC50 values of 25 nM and 10 nM for the hCB1-R and rCB1-R, respectively, and is ineffective for the hCB2-R[1].
Hemopressin(rat) is a nonapeptide derived from the α1-chain of hemoglobin, is originally isolated from rat brain homogenates. Hemopressin(rat) is orally active, selective and inverse agonist of CB1 cannabinoid receptors. Hemopressin(rat) exerts antinociceptive action in inflammatory pain models[1][2].