The molecule is a L-threonine derivative phosphorylated at the side-chain hydroxy function. It has a role as an Escherichia coli metabolite. It is a L-threonine derivative, a non-proteinogenic L-alpha-amino acid and an O-phosphoamino acid. It is a conjugate acid of an O-phosphonato-L-threonine(2-).
(2S,3R)-2-amino-3-phosphonooxybutanoic acid