(S)-Ceralasertib is a potent and selective inhibitor of sulfoximine morpholinopyrimidine ATR with excellent preclinical physicochemical and pharmacokinetic (PK) characteristics. .
Ceralasertib is an orally available inhibitor of ataxia telangiectasia and rad3 related (ATR) kinase. Ceralasertib selectively inhibits ATR activity by blocking the downstream phosphorylation of the serine/threonine protein kinase CHK1. This prevents ATR-