9-Bromo-10-phenylanthracene is an organic compound featuring an anthracene core substituted with a bromine atom at the 9-position and a phenyl group at the 10-position. This specific substitution pattern makes it a valuable building block in materials science. Its primary and most significant application is as a key intermediate or precursor in the synthesis of organic light-emitting diodes (OLEDs) and other organic electronic materials. The anthracene moiety is a classic blue-emitting chromophore, and functionalization at the 9- and 10-positions allows for fine-tuning of electronic properties, energy levels, and molecular packing in the solid state. It is used to construct more complex molecules for host, dopant, or charge-transporting layers in OLED devices. From a synthetic chemistry perspective, the bromine atom serves as a reactive handle for further cross-coupling reactions (e.g., Suzuki, Stille, or Buchwald-Hartwig couplings), enabling the construction of extended π-conjugated systems. Therefore, it also functions as a specialized organic synthesis building block.