IC50: 0.65 μM (IGF1R).
Indirubin Derivative E804 is a water-soluble indirubin derivative as potent inhibitor of Insulin-like Growth Factor 1 Receptor (IGF1R), with an IC 50 of 0.65 μM. Indirubin Derivative E804 also inhibits CDK2/CycE with an EC 50 of 0.23 μM.