(5-Fluoro-1,2-dihydro-2-oxo-4-pyrimidinyl)-beta-D-glucopyranosiduronic acid methyl ester 5-FU O-beta-D-glucuronide 5-Fluorouracil O-beta-D-glucuronide 64977-52-2 FU-O-G Glucopyranosiduronic acid, (5-fluoro-1,2-dihydro-2-oxo-4-pyrimidinyl)-, methyl ester, beta-D- Methyl 1-(5-fluoro-1H-2-oxopyrimidin-4-yl)-beta-D-glucopyranuronate