Gefapixant citrate is an orally active P2X3 receptor (P2X3R) antagonist that acts on human homologous recombinant hP2X3 (IC50: ~30 nM) and hP2X2/3 (IC50: 100-200 nM).

ADX88178 is a potent positive allosteric modulator for metabotropic glutamate receptor 4 (mGluR4) with EC50 of 4 nM for human mGluR4.

Licoarylcoumarin is a strong inhibitor of adenosine 3',5'-cyclic monophosphate (cAMP) phosphodiesterase. Licoarylcoumarin has antibacterial effects on the VRE strains; it has anti-HIV activity, and it has inhibitory effects on xanthine oxidase.