D 2650 (OTTO) Diethyl(3-pyridyl)borane, 97% Cas 89878-14-8 - used as a reactant for preparation of inhibitors of ataxia telangiectasia mutated and Rad3 related (ATR) protein kinase as potential anticancer agents, N-Methylation reactions of the pyridyl group, Palladium catalyzed amination reactions, intramolecular Heck reactions, Coupling reactions and Synthesis of trisubstituted pyrimidines from polyhalopyrimidines via Suzuki coupling.