FGFR-IN-1 is a highly effective inhibitor targeting the Fibroblast Growth Factor Receptor (FGFR) group, comprising FGFR1, FGFR2, and FGFR3, with an impressive inhibitory concentration (IC 50) of less than 100 nM (US20130338134A1, example 219).
FGFR1 inhibitor-2 (with an IC50 of 4.55 μM in MDA-MB-231 cells) is a potent inhibitor of FGFR1. It is specifically useful for studying metastatic triple-negative breast cancer.