687657
  -OEChem-02060822462D

  4  3  0     0  0  0  0  0  0999 V2000
    0.8700    0.2500    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.7300   -0.2500    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.0000   -0.2500    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.6000    0.2500    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  1  0  0  0  0
  1  3  2  0  0  0  0
  2  4  2  0  0  0  0
M  END
> <PUBCHEM_COMPOUND_ID_TYPE>
0

> <PUBCHEM_TOTAL_CHARGE>
0

> <PUBCHEM_SUBSTANCE_ID>
687657

> <PUBCHEM_SUBSTANCE_VERSION>
3

> <PUBCHEM_EXT_DATASOURCE_NAME>
ChemIDplus

> <PUBCHEM_EXT_DATASOURCE_REGID>
068514374

> <PUBCHEM_SUBSTANCE_SYNONYM>
68514-37-4
EINECS 271-039-0
Hydrocarbons, C4-5 unsatd.
Hydrocarbons, C4-5-unsatd.

> <PUBCHEM_GENERIC_REGISTRY_NAME>
68514-37-4

> <PUBCHEM_XREF_EXT_ID>
068514374

> <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=068514374

> <PUBCHEM_CID_ASSOCIATIONS>
7845  1

$$$$