Wikipedia:  

Prephenic acid

2,5-Cyclohexadiene-1-propanoic acid, 1-carboxy-4-hydroxy-alpha-oxo-; Prephenic acid; Prephenate; 1-Carboxy-4-hydroxy-2,5-cyclohexadiene-1-pyruvic acid
Molecular Formula
C10 H10 O6
Natural Isotopic Abundance Mass
226.1828000000
Mono-Isotopic Molecular Masses
C12N14:   226.047738054
C13N14:   236.081286432
C12N15:   226.047738054
C13N15:   236.081286432
Prephenic acid image
Prephenic acid
InCHi String:
InChI=1S/C10H10O6/c11-6-1-3-10(4-2-6,9(15)16)5-7(12)8(13)14/h1-4,6,11H,5H2,(H,13,14)(H,15,16)

isomeric and canonical SMILES:
C1=CC(C=CC1O)(CC(=O)C(=O)O)C(=O)O


IUPAC
1-(2-carboxy-2-oxo-ethyl)-4-hydroxy-cyclohexa-2,5-diene-1-carboxylic acid



PubChem Substance (SID):   85164944   737920   3553
PubChem Compound (CID):   1028
KEGG: Compound ID   C00254
CAS Registry IDs:   126-49-8
PDB Chemical Component   PRE
Miscellaneous Databases and IDs:   CHEBI 29934

Reference data were obtained primarily from the PubChem database.

Three dimensional molecular rendering uses Jmol.