is tautomer of D-asparagine D-alpha-amino acid zwitterion D-asparagine zwitterion (2R)-4-amino-2-ammonio-4-oxobutanoate (2R)-4-amino-2-azaniumyl-4-oxobutanoate 0 132.053 132.11790 A D-alpha-amino acid zwitterion that is D-asparagine in which a proton has been transferred from the carboxy group to the amino group. It is the major species at pH 7.3. C4H8N2O3 CHEBI:74337 D-asparagine DCXYFEDJOCDNAF-UWTATZPHSA-N InChI=1S/C4H8N2O3/c5-2(4(8)9)1-3(6)7/h2H,1,5H2,(H2,6,7)(H,8,9)/t2-/m1/s1 NC(=O)C[C@@H]([NH3+])C([O-])=O chebi_ontology