2-Fluoro-4-methoxybenzaldehyde may be used in the preparation of:fluorine containing 2,4,5-trisubstituted imidazole1-(2-fluoro-4-methoxyphenyl)-2-propanone6-(2-fluoro-4-methoxyphenyl)fulvene10-(2-fluoro-4-methoxyphenyl)-6,7,9,10-tetrahydro-1Hfuro[3,4-b]pyrazolo[3,4-f]quinolin-9-onepolyhydroquinoline (PHQ)3-(2-fluoro-4-methoxyphenyl) acrylic acid methyl ester