The molecule is a hydroxy monocarboxylic acid anion resulting from the deprotonation of the carboxy group of (3R)-3-{[(3R)-3-{[(3R)-3-hydroxybutanoyl]oxy}butanoyl]oxy}butanoic acid. It is a trimer of (3R)-hydroxybutanoate; major microspecies at pH 7.3. It derives from a (R)-3-hydroxybutyrate. It is a conjugate base of a (3R)-3-{[(3R)-3-{[(3R)-3-hydroxybutanoyl]oxy}butanoyl]oxy}butanoic acid.
(3R)-3-[(3R)-3-[(3R)-3-hydroxybutanoyl]oxybutanoyl]oxybutanoate