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α-Ketobutyric acid is a product of the lysis of cystathionine. It is also one of the degradation products of threonine, produced by the catabolism of the amino acid by threonine dehydratase.
K 3455 (OTTO) 2-Ketobutyric acid, 97% Cas 600-18-0 - used to differentiate microorganisms based on their metaboli c properties.