204716
  -OEChem-02060822402D

  1  0  0     0  0  0  0  0  0999 V2000
    0.0000    0.0000    0.0000 Rn -2  0  0  0  0  0  0  0  0  0  0  0
M  ISO  1   1 220
M  END
> <PUBCHEM_COMPOUND_ID_TYPE>
0

> <PUBCHEM_TOTAL_CHARGE>
0

> <PUBCHEM_SUBSTANCE_ID>
204716

> <PUBCHEM_SUBSTANCE_VERSION>
3

> <PUBCHEM_EXT_DATASOURCE_NAME>
ChemIDplus

> <PUBCHEM_EXT_DATASOURCE_REGID>
022481487

> <PUBCHEM_SUBSTANCE_SYNONYM>
220Rn
22481-48-7
Radon, isotope of mass 220
Radon-220
Thoron (Radon-220)

> <PUBCHEM_GENERIC_REGISTRY_NAME>
22481-48-7

> <PUBCHEM_XREF_EXT_ID>
022481487

> <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=022481487

> <PUBCHEM_CID_ASSOCIATIONS>
62761  1

$$$$