125314-13-8

CP21R7 (CP21) is an effective and specific GSK3β inhibitor. It is used as an activator of stem cells prior to the induction of differentiation of stem cells to smooth muscle and endothelial cells. CP21R7 can be combined with BMP4 to commit human pluripotent stem cells to a mesodermal fate.

CP21 is an iron chelator that binds to iron in a 3:1 (ligand:iron) ratio. It is active against P. falciparum when used at concentrations of 10 and 100 µM. CP21 inhibits production of prostaglandin I2 induced by epinephrine, arachidonic acid, or A23187 in isolated rat aortic rings with IC50 values of 1.3, 1.3, and 1.4 mM, respectively. It inhibits glutamate-induced oxytosis, as well as decreases iodoacetic acid-induced cytotoxicity in an in vitro model of ischemia, in HT22 mouse hippocampal cells (EC50s = 13 and 9.5 µM, respectively). CP21 (200 mg/kg) increases the excretion of iron, but not copper, zinc, calcium, or magnesium, in rabbits.