4-Fluoro-2-methylphenol is used as a reagent to synthesize antagonists of Ghrelin, an endogeneous ligand that stimulates the release of growth hormone in rats. 4-Fluoro-2-methylphenol is also used as a reagent to synthesize Morpholine (M723725) derivatives, compounds that have potential to inhibit Serotonin (HCl: S274980) and Noradrenaline (HCl: N674500) reuptake.