is conjugate acid of is conjugate base of is enantiomer of is tautomer of D-cysteine D-cysteinate(1-) D-cysteinium L-cysteine zwitterion D-cysteine zwitterion (2S)-2-ammonio-3-mercaptopropanoate (2S)-2-ammonio-3-sulfanylpropanoate 0 121.020 121.15922 C3H7NO2S CHEBI:35236 D-cysteine zwitterion Gmelin:2352354 InChI=1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)/t2-/m1/s1 XUJNEKJLAYXESH-UWTATZPHSA-N [NH3+][C@H](CS)C([O-])=O chebi_ontology cysteine zwitterion