Used primarily as an intermediate in the synthesis of pharmaceuticals, especially in the development of non-steroidal anti-inflammatory drugs (NSAIDs) and selective COX-2 inhibitors. Its sulfonyl chloride functional group allows for easy attachment to other molecules, making it valuable in constructing complex drug structures. It is also employed in the preparation of liquid crystals and agrochemicals due to its stable biphenyl backbone and reactivity profile. Commonly used in organic synthesis for introducing the 3'-methylbiphenyl-4-ylsulfonyl moiety into target compounds.