4-Fluoro-2-methylbenzonitrile

CAS 147754-12-9

4-Fluoro-2-methylbenzonitrile contributes a defined aromatic pattern to further synthesis. CAS 147754-12-9 specifies the positions of fluorine, methyl, and nitrile rather than every isomer with the same formula. A documented process patent addresses its preparation and use as an intermediate in routes to trelagliptin. The benzylic carbon is developed into a linking unit while recognizable features of the aromatic fragment are retained. This is evidence of a synthetic role, not proof that the intermediate itself shares the final drug's biological activity. Its story shows why a building block's value can lie in positional precision: a small preassembled pattern helps organize the construction of a much larger molecule, with the completed target requiring its own evidence about properties and performance in the intended application.