Grp94-IN-3 (Compound 47) is a selective Grp94 ATP-competitive inhibitor with a dissociation constant (Kd) of 76 nM. It exhibits significantly lower affinity for Hsp90α, with a Kd of 9.17 μM. Grp94-IN-3 induces degradation of Integrin α2 (Integrinα2) in MDA-MB-231 cells and reduces intracellular accumulation of mutant myocilin in human trabecular meshwork cells. This compound is useful in research on metastatic cancers and open-angle glaucoma.

GRP94:76 nM (Kd)