The molecule is dianion of L-erythrulose 1-phosphate arising from deprotonation of the phosphate OH groups; major species at pH 7.3. It is a conjugate base of a L-erythrulose 1-phosphate. It is an enantiomer of a D-erythrulose 1-phosphate(2-).
[(3S)-3,4-dihydroxy-2-oxobutyl] phosphate