2034-69-7 2H-1-Benzopyran-2-one, 7-hydroxy-6-methoxy-3-((2-oxo-2H-1-benzopyran-7-yl)oxy)- (9CI) BRN 1299325 COUMARIN, 7-HYDROXY-6-METHOXY-3,7'-OXYDI- Daphnoretin NSC 291852 Thymelol