2(5H)-Furanone, 4-hydroxy-3-(4-methoxyphenyl)-5-((4-methoxyphenyl)methylene)- 4-Hydroxy-3-(4-methoxyphenyl)-5-((4-methoxyphenyl)methylene)-2(5H)-furanone 4-Hydroxy-5-(4-methoxybenzyliden)-3-(4-methoxyphenyl)-furan-2(5H)-on [German] 49637-64-1 5-18-04-00643 (Beilstein Handbook Reference) BRN 1352493