? 2,5-Dibromo-3-picoline , with CAS number of 3430-18-0, can be called 2,5-Dibromo-3-methylpyridine ; 2,5-Dibromo-3-methylpyridine ; pyridine, 2,5-dibromo-3-methyl- . It is an?off-white to beige crystalline powder.