153614
  -OEChem-02060822392D

  6  6  0     0  0  0  0  0  0999 V2000
    5.3667   -3.4000    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    6.8250   -3.6250    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    6.0360   -3.8867    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    5.7792   -4.6708    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.7016   -3.8867    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.9542   -4.6708    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
  1  3  1  0  0  0  0
  1  5  1  0  0  0  0
  2  3  2  0  0  0  0
  3  4  1  0  0  0  0
  4  6  2  0  0  0  0
  5  6  1  0  0  0  0
M  END
> <PUBCHEM_COMPOUND_ID_TYPE>
0

> <PUBCHEM_TOTAL_CHARGE>
0

> <PUBCHEM_SUBSTANCE_ID>
153614

> <PUBCHEM_SUBSTANCE_VERSION>
3

> <PUBCHEM_EXT_DATASOURCE_NAME>
ChemIDplus

> <PUBCHEM_EXT_DATASOURCE_REGID>
000497234

> <PUBCHEM_SUBSTANCE_SYNONYM>
2-Buten-4-olide
2-Butenoic acid gamma-lactone
2-Butenoic acid, 4-hydroxy-, gamma-lactone
2-Butenoic acid-gamma-lactone
2-Butenolide
2-Oxo-2,5-dihydrofuran
4-Hydroxy-2-butenoic acid lactone
4-Hydroxycrotonic acid gamma-lactone
497-23-4
5-17-09-00112 (Beilstein Handbook Reference)
BRN 0383585
BUTENOLIDE
CCRIS 5722
Crotonic acid, 4-hydroxy-, gamma-lactone (6CI,7CI)
EINECS 207-839-3
Furan-2(5H)-one
Isocrotonolactone
NSC 197009
alpha,beta-Crotonolactone
delta,alpha,beta-Butenolide
gamma-Crotolactone
gamma-Hydroxycrotonic acid lactone

> <PUBCHEM_GENERIC_REGISTRY_NAME>
497-23-4

> <PUBCHEM_XREF_EXT_ID>
000497234

> <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=000497234

> <PUBCHEM_CID_ASSOCIATIONS>
10341  1

$$$$