ly-2228820

Ralimetinib is a selective inhibitor that blocks phosphorylation of MK2 at Thr334, without affecting the phosphorylation of p38α MAPK, JNK, ERK1/2, c-Jun, ATF2, or c-Myc. Ralimetinib functions as an ATP-competitive inhibitor of p38 MAPK α/β, demonstrating IC50 values of 5.3 and 3.2 nM, respectively, and is under investigation as an anti-inflammatory and anticancer therapeutic.

Ralimetinib dimesylate (LY2228820 dimesylate) is the dimesylate salt form of LY2228820, a tri-substituted imidazole derivative and orally available p38 mitogen-activated protein kinase (MAPK) inhibitor with potential anti-inflammatory and antineoplastic activities.