1(3H)-ISOBENZOFURANONE, 4,6-DIMETHOXY-5-HYDROXY- 4,6-Dimethoxy-5-hydroxy-1(3H)-isobenzofuranone 4,6-Dimethoxy-5-hydroxyphthalide 4,6-Dwumetoksy-5-hydroksyftalid [Polish] 4-18-00-02336 (Beilstein Handbook Reference) 61052-37-7 BRN 0185688