The molecule is dianion of O-phospho-L-homoserine having anionic phosphate and carboxy groups and a protonated amino group. It has a role as a human metabolite and a Saccharomyces cerevisiae metabolite. It is a conjugate base of an O-phospho-L-homoserine.
(2S)-2-azaniumyl-4-phosphonatooxybutanoate