10088-69-4 1403-50-5 427-63-4 Erdin (+)-form methyl ester Estin Geodin Spiro(benzofuran-2(3H),1'-(2,5)cyclohexadiene)-2'-carboxylic acid, 5,7-dichloro-4-hydroxy-6'-methoxy-6-methyl-3,4'-dioxo-, methyl ester, (+)- d-Geodin