2H-1-Benzopyran-2-one, 7-hydroxy-4,8-dimethyl- 4, 8-Dimethylumbelliferone 4,8-Dimethyl-7-hydroxycoumarin 4115-76-8 7-Hydroxy-4,8-dimethyl-2H-chromen-2-one 7-Hydroxy-4,8-dimethylcoumarin AIDS-125112 AIDS125112 Coumarin, 7-hydroxy-4,8-dimethyl- NSC62131