xl-518

Cobimetinib R-enantiomer is the less active R-enantiomer of Cobimetinib which is a selective MEK inhibitor.

Cobimetinib (GDC-0973) is a selective inhibitor of mitogen-activated protein kinase kinase (MEK) (IC50: 0.9 nM). Cobimetinib specifically binds to and inhibits the catalytic activity of MEK1, resulting in inhibition of extracellular signal-related kinase 2 (ERK2) phosphorylation and activation and decreased tumor cell proliferation.

Cobimetinib racemate (Cobimetinib (racemate)) (GDC-0973 racemate) is a selective inhibitor of MEK.Cobimetinib racemate is also known as a mitogen-activated protein kinase, is a key component of the RAS/RAF/MEK/ERK pathway.