673635
  -OEChem-02060822462D

 10 10  0     0  0  0  0  0  0999 V2000
    3.2542   -0.1750    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    3.9625    1.5333    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    2.2542    0.8250    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.2542   -0.1750    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.2542    0.8250    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.5458   -0.8792    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.2542    0.8250    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.2542    1.8250    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.8042   -1.8417    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.5792   -0.6208    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
  1  4  1  0  0  0  0
  1  5  1  0  0  0  0
  2  5  2  0  0  0  0
  3  4  1  0  0  0  0
  3  5  1  0  0  0  0
  3  7  1  0  0  0  0
  3  8  1  0  0  0  0
  4  6  2  0  0  0  0
  6  9  1  0  0  0  0
  6 10  1  0  0  0  0
M  END
> <PUBCHEM_COMPOUND_ID_TYPE>
0

> <PUBCHEM_TOTAL_CHARGE>
0

> <PUBCHEM_SUBSTANCE_ID>
673635

> <PUBCHEM_SUBSTANCE_VERSION>
3

> <PUBCHEM_EXT_DATASOURCE_NAME>
ChemIDplus

> <PUBCHEM_EXT_DATASOURCE_REGID>
003173793

> <PUBCHEM_SUBSTANCE_SYNONYM>
2,2,4-Trimethyl-3-hydroxy-3-pentenoic acid beta lactone
2,2-Dimethyl-3-isopropyliden-beta-propiolactone
2-Oxetanone, 3,3-dimethyl-4-(1-methylethylidene)- (9CI)
2-Oxetanone, 4-isopropylidene-3,3-dimethyl-
3-Hydroxy-2,2,4-trimethyl-3-pentenoic acid, beta-lactone
3-Pentenoic acid, 3-hydroxy-2,2,4-trimethyl-, beta-lactone
3173-79-3
4-Isopropylidene-3,3-dimethyl-2-oxetanone
Dimethylketene dimer
EINECS 221-643-5
NSC 74312

> <PUBCHEM_GENERIC_REGISTRY_NAME>
3173-79-3

> <PUBCHEM_XREF_EXT_ID>
003173793

> <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=003173793

> <PUBCHEM_CID_ASSOCIATIONS>
96433  1

$$$$