Synonyms: | 4-hydroxy-6H-coumarin;4-hydroxypyrano[3,2-g]julolidine-2-one;1H,5H,11H-[1]Benzopyrano[6,7,8-ij]quinolizin-11-one, 2,3,6,7-tetrahydro-9-hydroxy-;9-hydroxy-2,3,6,7-tetrahydro-1H,5H,11H-pyrano[2,3-f]pyrido[3,2,1-ij]quinolin-11-one;4-Hydroxycoumarine 6H |