2H-1-Benzopyran-2-one, 3-(3-pyridyl)-5,6,7-trimethoxy- 3-(3-Pyridyl)-5,6,7-trimethoxycoumarin 5,6,7-Trimethoxy-3-(3-pyridyl)coumarin Coumarin, 3-(3-pyridyl)-5,6,7-trimethoxy- GN8266333