4-Nitrobenzoic acid is an organic compound with the formula C6H4(NO2)CO2H. It is a pale yellow solid. It is a precursor to 4-nitrobenzoyl chloride, the precursor to the anesthetic procaine and folic acid.
4-Nitrobenzoic acid (p-nitrobenzoic acid) is a carboxylic acid derivative. It participates in the biosynthesis of the antibiotic aureothin.Infrared Fourier transform spectroscopic studies suggest that the molecules of 4-nitrobenzoic acid gets adsorbed on the surfaces of fine silver powder as carboxylate.