2H-1-Benzopyran-2-one, 4-(4-pyridyl)-5,6,7-trimethoxy- 4-(4-Pyridyl)-5,6,7-trimethoxycoumarin 5,6,7-Trimethoxy-4-(4-pyridyl)coumarin Coumarin, 4-(4-pyridyl)-5,6,7-trimethoxy- GN8266666