is conjugate base of histidinate(1-) histidinate(2-) 153.13880 2-amino-3-imidazol-1-id-4-ylpropanoate An alpha-amino-acid anion that has formula C6H7N3O2. C6H7N3O2 CHEBI:32530 InChI=1S/C6H9N3O2/c7-5(6(10)11)1-4-2-8-3-9-4/h2-3,5H,1,7H2,(H2,8,9,10,11)/p-2 NC(Cc1c[n-]cn1)C([O-])=O TWRZMXZXJKNOLO-UHFFFAOYSA-L chebi_ontology histidinate histidinate(2-) histidine dianion alpha-amino-acid anion