Wikipedia:  

Dihydrocoumarin

meliotine; melilotic acid lactone; o-hydroxyhydrocinnamic acid lactone; 3,4-dihydrocoumarin; 1,2-benzodihydropyrone; chroman-2-one; Hydrocinnamic acid, o-hydroxy-, delta-lactone; 3,4-Dihydro-1-benzopyran-2-one; Melilotine; Hydroxydihydrocinnamic acid lactone, o-; 3,4-Dihydro-2H-1-benzopyran-2-one
Molecular Formula
C9 H8 O2
Natural Isotopic Abundance Mass
148.15862
Mono-Isotopic Molecular Masses
C12N14:   148.052429501
C13N14:   157.0826230412
C12N15:   148.052429501
C13N15:   157.0826230412
Dihydrocoumarin image
Dihydrocoumarin
InCHi String:
InChI=1S/C9H8O2/c10-9-6-5-7-3-1-2-4-8(7)11-9/h1-4H,5-6H2

canonical and isomeric SMILES:
C1CC(=O)OC2=CC=CC=C21


PUBCHEM iupac NAME: PUBCHEM iupac TRADITIONAL NAME: PUBCHEM iupac OPENEYE NAME: PUBCHEM iupac SYSTEMATIC NAME
chroman-2-one

PUBCHEM iupac CAS NAME
2-chromanone



PubChem Substance (SID):   85165204   10505364   4917598
PubChem Compound (CID):   660
KEGG: Compound ID   C02274
CAS Registry IDs:   119-84-6   1341-36-2
PDB Chemical Component   n/a
Miscellaneous Databases and IDs:   Sigma-Aldrich D104809_ALDRICH   ChEBI CHEBI:16151   HSDB 4333   BioCyc DIHYDROCOUMARIN   ChemIDplus 000119846   ChemSpider 16345009   EINECS 204-354-9   CCRIS 5803   NMRShiftDB 10009218   EPA DSSTox 474   UM-BBD c0397   Beilstein Handbook Reference 5-17-10-00013   ChemDB 4557212   NCGC NCGC00091491-01   NIST Chemistry WebBook 1662888345

Reference data were obtained primarily from the PubChem database.

Three dimensional molecular rendering uses Jmol.