Medchemexpress, HY-15777B 500mg LEE011 (succinate) Ribociclib succinate CAS:1374639-75-4 Formula:C27H36N8O5 IC50: 10/39 nM (CDK4/6) Purity:98% LEE011 succinate is a highly specific CDK4/6 inhibitor with IC 50 values of 10 nM and 39 nM, respectively, and is over 1,000-fold less potent against the cyclin B/CDK1 complex. Medchemexpress has over 10000 novel life-science reagents, reference compounds, APIs and natural compounds for laboratory and scientific use. Other quantity can also be offered.