Benzoic Acids

3,5-Dihydroxy-4-methylbenzoic acid is an efficient synthesis of the natural product lucidin. It is a quinone that is found in citrifolia and morindone, compounds which are used as analgesics and antipyretics. This compound has been shown to inhibit the growth of fungi by inhibition of protein synthesis. 3,5-Dihydroxy-4-methylbenzoic acid also inhibits the production of citric acid cycle intermediates such as succinic acid and fumaric acid.

2,4-Dinitrobenzoic acid (2,4-DNBA) is a chemical reagent that has been used as a positive control for the detection of hydrogen bonding interactions. It is also used in analytical methods to detect protonation, carboxylate, and hydroxyl groups. This compound can be prepared from picric acid by nitration with nitric acid and then reacting with aniline. The 2,4-DNBA molecule contains two intramolecular hydrogen bonds and four intermolecular hydrogen bonds. 2,4-DNBA is classified as a trifluoroacetic acid derivative.

4-alkoxy-3-nitrobenzoic acids were obtained by the alkylation of methyl 4-hydroxy-3-nitrobenzoate with corresponding n-alkylbromides in 3-pentanone. This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.