2-((3-(4-Hydroxyphenyl)-4-oxo-4H-1-benzopyran-7-yl)oxy)propanoic acid 7-(1-Hydroxycarbonylethyl)oxy-3-(4-hydroxyphenyl)-4H-1-benzopyran-4-one 99007-87-1 Propanoic acid, 2-((3-(4-hydroxyphenyl)-4-oxo-4H-1-benzopyran-7-yl)oxy)-