(S)-(+)-2-Hydroxy-3-methylbutyric acid

(S)-(+)-2-Hydroxy-3-methylbutyric acid (CAS No.: 17407-55-5) is a chiral α-hydroxy carboxylic acid that serves as a valuable intermediate in pharmaceutical and biochemical research, particularly in studies related to amino acid metabolism and stereoselective synthesis. Structurally analogous to key metabolites in branched-chain amino acid pathways, this compound is frequently employed to investigate enzyme-catalyzed transformations, including dehydrogenase- and oxidoreductase-mediated reactions, thereby supporting the elucidation of metabolic flux and pathway regulation in cellular systems. Its defined stereochemistry makes it especially useful for probing structure–activity relationships and for the preparation of enantiomerically enriched bioactive molecules in medicinal chemistry workflows. Although specific molecular targets are not well characterized, compounds of this class are commonly associated with modulation of metabolic enzyme networks and redox-related pathways, with observed biochemical activity in the low micromolar to millimolar range depending on assay conditions and model systems. In vitro and in vivo studies typically utilize this compound as a substrate analog or metabolic probe in cell-based assays or experimental models to explore metabolic perturbations, enzyme specificity, and pathway integration, with concentrations or dosing regimens tailored to the objectives of each study.