The molecule is zwitterionic form of 3-(uracil-1-yl)-L-alanine having an anionic carboxy group and a protonated amino group. It is a tautomer of a 3-(uracil-1-yl)-L-alanine.
(2S)-2-azaniumyl-3-(2,4-dioxopyrimidin-1-yl)propanoate