1-(2-Hydroxybiphenyl-3-yl)ethanone is an organic compound featuring a biphenyl core substituted with a hydroxyl group and an acetyl group. It serves as a key synthetic intermediate in the preparation of advanced organic electronic materials. Its primary application is in the field of organic light-emitting diodes (OLEDs). This compound is a crucial precursor for the synthesis of various high-performance host and dopant materials used in OLED devices. The biphenyl structure provides rigidity and good charge transport properties, while the hydroxyl and acetyl groups offer reactive handles for further functionalization into complex heterocyclic systems, such as carbazoles or other fused aromatic structures essential for efficient electroluminescence. As a versatile building block, it is also utilized in organic synthesis for constructing more complex molecular architectures beyond optoelectronics, leveraging its phenolic and ketone functionalities for further chemical transformations.