1,2,4,5-Tetrakis(2-phenylviny)benzene (CAS 25634-86-0) has a molecular formula of C??H?? and a molecular weight of 512.68 g/mol, with four phenylethenyl (-CH=CH-C?H?) groups at the 1,2,4,5 positions of the central benzene ring. As a symmetric ??-conjugated aromatic compound, it is widely used in optoelectronic materials (e.g., OLEDs, organic solar cells) for its excellent light-emitting and charge-transport properties. It should be stored sealed under cool, dry, dark conditions to prevent oxidation, maintaining its structural and electronic integrity for advanced material applications.