SMILES: CP(=O)(CC[C@H](C(=O)O)O)O
Description: The molecule is a butyric acid derivative having an (R)-hydroxy sbustituent at the 2-position and a hydroxymethylphosphinyl moiety at the 4-position. It derives from a butyric acid. It is a conjugate acid of a (R)-2-hydroxy-4-(hydroxymethylphosphinyl)butyrate.