free sugar galactose 0 180.06339 180.156 cas:26566-61-0 C6H12O6 Galactose wikipedia.en:Galactose galacto-hexose Galaktose chebi_ontology Gal galactose galactose CHEBI:33933 CHEBI:28260 CHEBI:5256 CHEBI:24162 kegg.compound:C01582 Galactose galacto-hexose An aldohexose that is the C-4 epimer of glucose. monosaccharide