27355-22-2 4,5,6,7-TETRACHLOROPHTHALIDE 4,5,6,7-Tetrachloro-1(3H)-isobenzofuranone (9CI) 4,5,6,7-Tetrachlorophthalidefthalide 4-17-00-04950 (Beilstein Handbook Reference) BRN 0182477 Bayer 96610 Fthalide KF-32 Phthalide Phthalide, 4,5,6,7-tetrachloro- Rabcide