30138-68-2 4-Methyl-2-oxo-2H-1-benzopyran-7-yl beta-D-glucopyranosiduronic acid 4-Methylumbelliferyl beta-glucuronide 4-Methylumbelliferyl glucuronide 6160-80-1 84434-84-4 EINECS 228-186-0 beta-D-Glucopyranosiduronic acid, 4-methyl-2-oxo-2H-1-benzopyran-7-yl