2H-1-Benzopyran-2-one, 4-hydroxy-3-(o-tolyl)- 4-Hydroxy-3-(o-tolyl)-2H-1-benzopyran-2-one 4-Hydroxy-3-(o-tolyl)coumarin 5-18-02-00306 (Beilstein Handbook Reference) 73791-18-1 BRN 1287626 COUMARIN, 4-HYDROXY-3-(o-TOLYL)-