UC-857993 is a selective SOS1-Ras inhibitor (Kd=14.7 μM, His6-SOS1cat), suppressing catalytic activity. UC-857993 also inhibits ERK and Ras activation, suppresses the growth of mouse embryonic fibroblasts (MEFs)[1].
References
[1] Evelyn CR, et al. Combined rational design and a high throughput screening platform for identifying chemical inhibitors of a Ras-activating enzyme. J Biol Chem. 2015 May 15;290(20):12879-98. DOI:10.1074/jbc.M114.634493