4-Bromomethyl-1,2-Dihydroquinoline-2-One

4-(Bromomethyl)quinolin-2(1H)-one (4-bromomethyl-2-quinolone) is a nitrogen heterocycle derivative carrying a bromomethyl group at the 4-position of 2(1H)-quinolone. It is an off-white to pale yellow crystalline powder at room temperature, melting point 255-258 °C, density about 1.542 g/cm3 — a versatile quinolone pharmaceutical intermediate. Poorly soluble in water, soluble in polar organic solvents such as DMSO and DMF; chemically stable at ambient conditions, meeting pharmaceutical-grade and reagent-grade requirements. The product is hygroscopic and slightly irritating; store sealed, protected from light, in a cool, dry place.