2H-1-Benzopyran-3-carboxamide, 7-(beta-D-galactopyranosyloxy)-2-oxo-N-(3-(2,3,6,7-tetrahydro-1,3-dimethyl-2,6-dioxo-1H-purin-8-yl)propyl)- 7-(beta-D-Galactopyranosyloxy)-2-oxo-N-(3-(2,3,6,7-tetrahydro-1,3-dimethyl-2,6-dioxo-1H-purin-8-yl)propyl)-2H-1-benzopyran-3-carboxamide 79181-90-1 EINECS 279-107-1 beta-Galactosylumbelliferone theophylline