Mukd‑546: Pre‑clinical Evaluation of a Novel Small‑Molecule Inhibitor of the MAPK/ERK Pathway for Targeted Cancer Therapy

A. Patel¹, J. Liu², M. García³, S. K. Singh¹, L. R. Thompson⁴, H. Kim⁵

Mukd‑546 (chemical name: ) is a novel heterocyclic scaffold derived from a structure‑based design campaign targeting the allosteric pocket of MEK1. Preliminary SAR (structure‑activity relationship) studies indicated that the sulfonyl‑pyrimidine core confers high affinity while the 4‑fluorophenyl substituent enhances metabolic stability.