2-oxo-2H-pyran-4,6-dicarboxylate
  CDK    2/12/10,15:27

 13 13  0  0  0  0  0  0  0  0999 V2000
    5.2275   -6.9924    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    6.6564   -6.9924    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    5.9419   -6.5799    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    5.2275   -7.8174    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    6.6564   -5.3424    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    5.9419   -5.7549    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    5.2275   -5.3424    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    3.7985   -7.8174    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    4.5130   -8.2299    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.5130   -9.0549    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    6.6564   -7.8174    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    7.3709   -8.2299    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    5.9419   -8.2299    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
  3  1  1  0  0  0  0 
  3  2  2  0  0  0  0 
  1  4  2  0  0  0  0 
  4 13  1  0  0  0  0 
 13 11  1  0  0  0  0 
 11  2  1  0  0  0  0 
  3  6  1  0  0  0  0 
  4  9  1  0  0  0  0 
  6  5  2  0  0  0  0 
  6  7  1  0  0  0  0 
  9  8  2  0  0  0  0 
  9 10  1  0  0  0  0 
 11 12  2  0  0  0  0 
M  CHG  1   7  -1
M  CHG  1  10  -1
M  END
> <ID>
CHEBI:58304

> <NAME>
2-oxo-2H-pyran-4,6-dicarboxylate

> <DEFINITION>
A dicarboxylic acid dianion obtained via deprotonation of both carboxy groups of 2-oxo-2H-pyran-4,6-dicarboxylic acid; major species at pH 7.3.

> <STAR>
3

> <SYNONYM>
2-oxo-2H-pyran-4,6-dicarboxylate dianion; 2-oxo-2H-pyran-4,6-dicarboxylate

> <IUPAC_NAME>
2-oxo-2H-pyran-4,6-dicarboxylate

> <FORMULA>
C7H2O6

> <MASS>
182.08720

> <MONOISOTOPIC_MASS>
181.98623

> <CHARGE>
-2

> <SMILES>
[O-]C(=O)c1cc(oc(=O)c1)C([O-])=O

> <INCHI>
InChI=1S/C7H4O6/c8-5-2-3(6(9)10)1-4(13-5)7(11)12/h1-2H,(H,9,10)(H,11,12)/p-2

> <INCHIKEY>
VRMXCPVFSJVVCA-UHFFFAOYSA-L

$$$$