CAS 3128-06-1: 4-acetylbutyric acid

4-Acetylbutyric acid is a monocarboxylic acid that is synthesized from levulinate. It has been shown to be an intermediate in the biosynthesis of amides and 2,6-dihydroxybenzoic acid. The reaction is catalyzed by an enzyme called acetyl coenzyme A synthetase and requires activation energies of −7.5 kJ/mol for the conversion of levulinate to 4-acetylbutyric acid. This organic compound has a kinetic constant of 1.1 × 10 M−1s−1 at 25°C and pH 7, with a pK value of 3.9 at 25°C; it also has amines and carboxylic functional groups, as well as a carbon source requirement.

4-Acetylbutyric acid is used in the synthesis of selective indomethacin analogues for AKR1C3 inhibition in the treatment of castrate-resistant prostate cancer. It is also used to prepare PARP inhibitors for the treatment of cancer. 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.

Applications 4-Acetylbutyric Acid is used in the synthesis of selective indomethacin analogues for AKR1C3 inhibition in the treatment of castrate-resistant prostate cancer. Also used to prepare PARP inhibitors for the treatment of cancer as well. References Liedtke, A. et al.: J. Med. Chem., 56, 2429 (2013); Zhu, G. et al.: Bioorg. Med. Chem., 20, 4653 (2012);

4-Acetylbutyric acid