2561413-77-0

WF-47-JS03 is a potent and selective RET kinase inhibitor with IC50s of 1.7 nM and 5.3 nM for KIF5B-RET transfected Ba/F3 cells and CCDC6-RET transfected LC-2/ad lung cancer cells, respectively. WF-47-JS03 demonstrates >500-fold selectivity against kinase insert domain receptor (KDR). Effective brain penetration[1].

[1] Casey J N Mathison , et al. Efficacy and Tolerability of Pyrazolo[1,5- a]pyrimidine RET Kinase Inhibitors for the Treatment of Lung Adenocarcinoma. ACS Med Chem Lett. 2020 Feb 12;11(4):558-565. DOI:10.1021/acsmedchemlett.0c00015