β-Hydroxybutyryl-CoA (or 3-hydroxybutyryl-coenzyme A) is an intermediate in the fermentation of butyric acid, and in the metabolism of lysine and tryptophan. The L-3-hydroxybutyl-CoA (or (S)-3-hydroxybutanoyl-CoA) enantiomer is also the second to last intermediate in beta oxidation of even-numbered, straight chain, and saturated fatty acids.
See also Crotonyl-coenzyme A Acetoacetyl CoA Beta-hydroxybutyryl-CoA dehydrogenase 3-hydroxybutyryl-CoA dehydratase
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