CHIR-99021 HCl

Cas No.:	1797989-42-4
Chemical Name:	CHIR-99021 HCl
Synonyms:	CHIR-99021 Hydrochloride;C22H18Cl2N8.HCl;BCP26126;s2924;SW219488-1;X7424;CHIR-99021 HCl;CHIR-99021 monohydrochloride
SMILES:	ClC1C([H])=C(C([H])=C([H])C=1C1C(=C([H])N=C(N=1)N([H])C([H])([H])C([H])([H])N([H])C1C([H])=C([H])C(C#N)=C([H])N=1)C1=NC([H])=C(C([H])([H])[H])N1[H])Cl.Cl[H]
Formula:	C22H19Cl3N8
M.Wt:	501.7989
Sotrage:	2 years -20°C Powder, 2 weeks 4°C in DMSO, 6 months -80°C in DMSO

Description:	CHIR-99021 monohydrochloride is a GSK-3α/β inhibitor with IC50 of 10 nM/6.7 nM; > 500-fold selectivity for GSK-3 versus its closest homologs CDC2 and ERK2, as well as other protein kinases.
In Vivo:	In ZDF rats, a single oral dose of CHIR 99021 (16 mg/kg or 48 mg/kg) rapidly lowers plasma glucose, with a maximal reduction of nearly 150 mg/dl 3-4 h after administration[1]. CHIR99021 (2 mg/kg) given once, 4 h before irradiation, significantly improves survival after 14.5 Gy abdominal irradiation (ABI). CHIR99021 treatment significantly blocks crypt apoptosis and accumulation of p-H2AX+ cells, and improves crypt regeneration and villus height. CHIR99021 treatment increases Lgr5+ cell survival by blocking apoptosis, and effectively prevents the reduction of Olfm4, Lgr5 and CD44 as early as 4 h[4].
In Vitro:	CHIR 99021inhibits human GSK-3β with Ki values of 9.8 nM[1]. CHIR 99021 is a small organic molecule that inhibits GSK3α and GSK3β by competing for their ATP-binding sites.In vitro kinase assays reveal that CHIR 99021 specifically inhibits GSK3β (IC50=~5 nM) and GSK3α (IC50=~10 nM), with little effect on other kinases[2]. In the presence of CHIR-99021 the viability of the ES-D3 cells is reduced by 24.7% at 2.5 μM, 56.3% at 5 μM, 61.9% at 7.5 μM and 69.2% at 10 μM CHIR-99021 with an IC50 of 4.9 μM[3].