2-Fluoro-3-methoxybenzaldehyde is a white crystalline solid with a molecular formula of C8H7FO2 and a molecular weight of 154.14 g/mol. It is used as a key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly in the creation of benzosuberone derivatives. This fluorinated benzaldehyde building block is also employed in the synthesis of bicyclic heterocycles, including hydroisoquinolines, acrydinone, and quinazolines. It is characterized by a melting point of 47-51°C and is known for its multiple functional groups, which facilitate synthesis in drug discovery, medicinal chemistry, and biochemistry research.