6-Formylpyridine-3-boronic acid, pinacol ester5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)picolinaldehyde5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-2-carboxaldehyde2-FORMYLPYRIDINE-5-BORONIC ACID PINACOLATE5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)picolinaldehyde