The molecule is a 2-oxo monocarboxylic acid anion resulting from the removal of the proton from the carboxy group of 2-oxooctadecanoic acid (stearic acid). The major species at pH 7.3. It derives from an octadecanoate. It is a conjugate base of a 2-oxooctadecanoic acid.
2-oxooctadecanoate