(2S)-2-amino-3-(2,4-dioxopyrimidin-1-yl)propanoic acid (2S)-2-amino-3-(2,4-dioxo-1-pyrimidinyl)propanoic acid (2S)-2-amino-3-(2,4-diketopyrimidin-1-yl)propionic acid 21416-43-3 HWD S(−)-Willardiine EU-0101219 S(−)-alpha-Amino--3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinepropanoic acid W105_SIGMA 3-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-L-alanine CHEBI:15851 Lopac0_001219 3-(Uracil-1-yl)-L-alanine C03584 Willardiine 2-AMINO-3-(2,4-DIOXO-3,4-DIHYDRO-2H-PYRIMIDIN-1-YL)-PROPIONIC ACID