#isomers

• Aminophenol — A bifunctional organic compound with amphoteric character, derived from phenol by replacing a hydrogen atom on the aromatic ring with an amino group (-NH2). It has three positional isomers (ortho, meta, and para), of which para-aminophenol is the most industrially important, serving as a key structural intermediate in the synthesis of paracetamol, hair dyes, and photographic developers.
• Anisidine — An organic aromatic compound belonging to the amine family, derived from anisole and existing as three positional isomers (ortho, meta, and para); methoxyaniline. Industrially, it is used as an essential intermediate in the synthesis of azo dyes, pigments, and pharmaceuticals. In food biochemistry, p-anisidine is a primary reagent used to measure the secondary oxidation value of fats and oils by quantifying aldehyde formations.