1-((3R,4R)-3-(((5-chloro-2-((1-methyl-1H-pyrazol-4-yl)amino)-7H-pyrrolo[2,3-d]pyrimidin-4-yl)oxy)methyl)-4-methoxypyrrolidin-1-yl)prop-2-en-1-one
PF-06459988 is under investigation in clinical trial NCT02297425 (A Study For Patients With EGFRm (Epidermal Growth Factor Receptor Mutant) Lung Cancer).