CHIR-99021

Potent and selective inhibitor of glycogen synthase kinase-3β (GSK3β, IC50 = 5 nM) and GSK3α (IC50 = 10 nM) 1. Induces osteoblastogenesis, increases mineralization and inhibits adipogenesis in ST2 cells2. Promotes replication and survival of pancreatic beta cells3. Enhances differentiation and reduces proliferation of adult human olfactory epithelium neural precursors4. Cell permeable and active in vivo.