anhydrohexose deoxyketohexose levoglucosenone (1S)-6,8-Dioxabicyclo(3.2.1)oct-2-en-4-one (1S,5R)-6,8-dioxabicyclo[3.2.1]oct-2-en-4-one 1,6-anhydro-3,4-dideoxy-beta-D-glycero-hex-3-enopyranos-2-ulose 126.032 126.11004 C6H6O3 CAS:37112-31-5 CHEBI:30999 HITOXZPZGPXYHY-UJURSFKZSA-N InChI=1S/C6H6O3/c7-5-2-1-4-3-8-6(5)9-4/h1-2,4,6H,3H2/t4-,6+/m0/s1 O=C1C=C[C@H]2CO[C@@H]1O2 Patent:US5041566 chebi_ontology