2H-Furo(2,3-h)(1)benzopyran-2-one, 4,6,9-trimethyl, plus ultraviolet A radiation 2H-Furo(2,3-h)-1-benzopyran-2-one, 4,6,9-trimethyl- 4,4',6-Trimethylangelicin 4,4',6-Trimethylangelicin plus ultraviolet A radiation 4,4,6-Trimethylangelicin 4,6,4'-Trimethylangelicin 4,6,9-Trimethyl-2H-furo(2,3-h)(1)benzopyran-2-one plus ultraviolet A radiation 4,6,9-Trimethyl-2H-furo(2,3-h)-1-benzopyran-2-one 4-Hydroxy-beta,3,7-trimethyl-5-benzofuranacrylic acid delta-lactone 90370-29-9 BRN 4467945 CCRIS 4277