2-Bromo-7-chloro-naphthalene is halogen substituted derivative of Naphthalene (N345600), which is an abundant polycyclic aromatic hydrocarbon that is persistent, bioaccumulative, toxic and found in tobacco smoke and urban air. 2-Bromo-7-chloro-naphthalene is used as a reactant in the preparation of heterocyclic compounds for organic light emitting device materials.