Fu-O-G

5-Fu-O-β-D-glucuronide

methyl 1-(5-fluoro-1H-2-oxopyrimidin-4-yl)-beta-D- glucopyranuronate

5-Fluoro-1,2-dihydro-4-[(6-O-methyl-β-D-glucopyranuronosyl)oxy]pyrimidin-2-one