CST, 54290S, CHIR-99021

Product Usage Information
CHIR-99021 is supplied as a lyophilized powder. For a 10 mM stock, reconstitute 5 mg of powder in 1.07 ml of DMSO. Working concentrations and length of treatment can vary depending on the desired effect.
Storage
Store lyophilized at -20ºC, desiccated. In lyophilized form, the chemical is stable for 24 months. Once in solution, store at -20ºC and use within 3 months to prevent loss of potency. Aliquot to avoid multiple freeze/thaw cycles.
Background
CHIR-99021, also known as CT-99021, is a potent and selective inhibitor of glycogen synthase kinase-3β (GSK-3β) and GSK-3α with IC values of 6.7 and 10 nM, respectively. This small compound has been shown to have >500-fold selectivity for GSK-3 when tested against 20 different protein kinases (1). Studies have shown that treating isolated rat islets with CHIR-99021 can increase beta cell replication 2-3-fold, making this an important compound when studying type 1 and type 2 diabetes (2).
Alternate Names
6-[[2-[[4-(2,4-Dichlorophenyl)-5-(5-methyl-1H-imidazol-2-yl)-2-pyrimidinyl]amino]- ethyl]amino]-3-pyridinecarbonitrile; CHIR99021; CT-99021; CT99021