(E)-2,3-Dihydro-3-((2-hydroxyphenyl)methylene)-4H-1-benzopyran-4-one 130688-83-4 4-18-00-00737 (Beilstein Handbook Reference) 4H-1-Benzopyran-4-one, 2,3-dihydro-3-((2-hydroxyphenyl)methylene)-, (E)- BRN 0020824