The molecule is the 4-phospho derivative of L-aspartic acid. It has a role as an Escherichia coli metabolite. It is an aminoacyl phosphate, a L-aspartic acid derivative and a non-proteinogenic L-alpha-amino acid. It is a conjugate acid of a 4-phosphonato-L-aspartic acid(2-) and a 4-phospho-L-aspartate.
(2S)-2-amino-4-oxo-4-phosphonooxybutanoic acid