EG00229 selectively inhibits VEGF-A binding to NRP1 b1 domain with an IC50 of 3 μM, but has no effect on VEGFA binding to VEGFR-1 and VEGFR-2. EG00229 is a neuropilin 1 (NRP1) receptor antagonist.
FR167344 free base is an orally active, nonpeptide antagonist of the bradykinin receptor B2, exhibiting high-affinity binding (IC50: 65 nM) and showing no binding affinity for the B1receptor.