Laduviglusib (CHIR-99021) monohydrochloride is a potent and selective GSK-3α/β inhibitor with IC50s of 10 nM and 6.7 nM. Laduviglusib monohydrochloride shows >500-fold selectivity for GSK-3 over CDC2, ERK2 and other protein kinases. Laduviglusib monohydrochloride is also a potent Wnt/β-catenin signaling pathway activator. Laduviglusib monohydrochloride enhances mouse and human embryonic stem cells self-renewal. Laduviglusib monohydrochloride induces autophagy.