L-ISOLEUCINE UNLABELED is a free, proteinogenic amino acid in the branched-chain class, featuring an aliphatic side chain with a secondary carbon and a hydrophobic isobutyl-like functionality attached to the alpha carbon. It contains a primary amino group and a carboxyl group on the alpha carbon, with stereochemistry consistent with the L-amino acid form indicated by the product name, and the side chain bears no additional ionizable groups under typical conditions. As an unlabeled isoleucine, it is employed as a defined building block for peptide synthesis and as a reference substrate in amino-acid analysis, derivatization workflows, and structure-activity or enzyme-substrate studies where isotopic labeling is not required.
CAT No: L-Iso-0333
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