tetracarboxylic acid anion ethylenediaminetetraacetic acid EDTA(3-) EDTA(2-) C10H14N2O8 [O-]C(=O)C[NH+](CC[NH+](CC([O-])=O)CC([O-])=O)CC([O-])=O 290.07611 2,2',2'',2'''-(ethane-1,2-diyldiammonio)tetraacetate EDTA KCXVZYZYPLLWCC-UHFFFAOYSA-L MetaCyc:EDTA -2 2,2',2'',2'''-(ethane-1,2-diyldiazaniumyl)tetraacetate A tetracarboxylic acid anion formed by deprotonation of two of the four carboxy groups in ethylenediaminetetraacetic acid (EDTA). 290.22680 chebi_ontology InChI=1S/C10H16N2O8/c13-7(14)3-11(4-8(15)16)1-2-12(5-9(17)18)6-10(19)20/h1-6H2,(H,13,14)(H,15,16)(H,17,18)(H,19,20)/p-2 CHEBI:64755