This compound, the sodium salt of 3-methyl-2-oxobutanoic acid (also known as α-ketoisovaleric acid), is primarily used in biochemical research and pharmaceutical applications. It serves as a key intermediate in the catabolism of the branched-chain amino acid valine and is essential for studying metabolic pathways, particularly those involving branched-chain α-keto acid dehydrogenase (BCKDH). Its role makes it valuable for investigating enzymatic processes and metabolic disorders, such as maple syrup urine disease (MSUD). It is also employed as a precursor in the synthesis of various organic compounds, including active pharmaceutical ingredients.