210265
  -OEChem-02060822402D

 10 10  0     0  0  0  0  0  0999 V2000
    1.7425    0.7500    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.8700    2.2500    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.0000   -2.2500    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    1.7300   -2.2500    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.8725   -0.7500    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.8725    1.2500    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.7425   -0.2500    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.8700   -1.7500    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.0125   -0.2500    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.0125    0.7500    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
  1  6  1  0  0  0  0
  1  7  1  0  0  0  0
  2  6  2  0  0  0  0
  3  8  2  0  0  0  0
  4  8  1  0  0  0  0
  5  7  2  0  0  0  0
  5  8  1  0  0  0  0
  5  9  1  0  0  0  0
  6 10  1  0  0  0  0
  9 10  2  0  0  0  0
M  END
> <PUBCHEM_COMPOUND_ID_TYPE>
0

> <PUBCHEM_TOTAL_CHARGE>
0

> <PUBCHEM_SUBSTANCE_ID>
210265

> <PUBCHEM_SUBSTANCE_VERSION>
3

> <PUBCHEM_EXT_DATASOURCE_NAME>
ChemIDplus

> <PUBCHEM_EXT_DATASOURCE_REGID>
000500050

> <PUBCHEM_SUBSTANCE_SYNONYM>
2-Oxopyran-5-carboxylic acid
2-Pentenedioic acid, 4-(hydroxymethylene)-, delta-lactone
2H-Pyran-5-carboxylic acid, 2-oxo-
500-05-0
Coumalic acid
Cumalic acid
EINECS 207-899-0
NSC 22978
alpha-Pyrone-5-carboxylic acid

> <PUBCHEM_GENERIC_REGISTRY_NAME>
500-05-0

> <PUBCHEM_XREF_EXT_ID>
000500050

> <PUBCHEM_EXT_DATASOURCE_URL>
http://chem.sis.nlm.nih.gov/chemidplus/

> <PUBCHEM_EXT_SUBSTANCE_URL>
http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced&regno=000500050

> <PUBCHEM_CID_ASSOCIATIONS>
68141  1

$$$$