b-raf in 11

B-Raf IN 11 is a novel selective inhibitor. The DFG-in conformation of the B-Raf kinase V600E mutant is superior to the DFG-out conformation in colorectal cancer.

SB590885 is an effective B-Raf inhibitor (Ki: 0.16 nM, in a cell-free assay). The selectivity of SB590885 for B-Raf is 11-fold greater over c-Raf, no acts to other human kinases.

Sorafenib N-oxide is an active metabolite of sorafenib , an inhibitor of Raf-1, B-RAF, and receptor tyrosine kinases. Sorafenib N-oxide inhibits FLT3 that contains the internal tandem duplication mutation (FLT3-ITD; Kd = 70 nM) and inhibits proliferation of MV4-11 acute myeloid leukemia (AML) cells expressing FLT3-ITD (IC50 = 25.8 nM). It is selective for AML cell lines containing FLT3-ITD over lines containing wild-type FLT3 (IC50s = 3.9-13.3 μM). Sorafenib N-oxide is also a linear-mixed inhibitor of the cytochrome P450 (CYP) isoform CYP3A4 (Ki = 15 μM in human liver microsomes).