Wikipedia:  

trans-2-Hydroxycinnamic acid

2-Hydroxycinnamate; (2E)-3-(2-hydroxyphenyl)prop-2-enoic acid; 3-(2-hydroxyphenyl)prop-2-enoic acid; trans-2-Hydroxycinnamate; CINNAMIC ACID,2-HYDROXY (TRANS); 2-Propenoic acid, 3-(2-hydroxyphenyl)-, (E)-; 3-(2-hydroxyphenyl)acrylic acid; Cinnamic acid, o-hydroxy-, (E)-; trans-2-Hydroxycinnamic acid; 2-Coumaric acid; o-Coumaric acid
Molecular Formula
C9 H8 O3
Natural Isotopic Abundance Mass
164.15802
Mono-Isotopic Molecular Masses
C12N14:   164.0473441231
C13N14:   173.0775376633
C12N15:   164.0473441231
C13N15:   173.0775376633
trans-2-Hydroxycinnamic acid image
trans-2-Hydroxycinnamic acid
InCHi String:
InChI=1S/C9H8O3/c10-8-4-2-1-3-7(8)5-6-9(11)12/h1-6,10H,(H,11,12)/b6-5+

canonical SMILES:
C1=CC=C(C(=C1)C=CC(=O)O)O
isomeric SMILES:
C1=CC=C(C(=C1)\C=C\C(=O)O)O


PUBCHEM iupac NAME: PUBCHEM iupac OPENEYE NAME: PUBCHEM iupac CAS NAME: PUBCHEM iupac SYSTEMATIC NAME
(E)-3-(2-hydroxyphenyl)prop-2-enoic acid

PUBCHEM iupac TRADITIONAL NAME
(E)-3-(2-hydroxyphenyl)acrylic acid



PubChem Substance (SID):   85165146   7986811   4905
PubChem Compound (CID):   637540
KEGG: Compound ID   C03549
CAS Registry IDs:   583-17-5   614-60-8
PDB Chemical Component   2HC
Miscellaneous Databases and IDs:   Sigma-Aldrich 28170_FLUKA   ChEBI CHEBI:18125   ChemSpider 553146   NMRShiftDB 10008842   CambridgeSoft Corporation 1901   NIST Chemistry WebBook 547074069

Reference data were obtained primarily from the PubChem database.

Three dimensional molecular rendering uses Jmol.