(2S)-flavan-4-one O1C2=C(C(C[C@H]1C3=C(C(=C(C(=C3*)*)*)*)*)=O)C(=C(C(=C2*)*)*)* (2S)-flavanones (2S)-flavanone C15H3O2R9 chebi_ontology CHEBI:140377 a (2S)-flavan-4-one 215.01330 0 215.184 Any flavanone in which the chiral centre at position 2 has S-configuration. MetaCyc:2S-Flavanones (2S)-flavan-4-ones flavanones