1,2,4,5,7,8-HEXACHLORO-9H-XANTHENE 1,2,4,5,7,8-Hexachloro(9H)xanthene 38178-99-3 5-17-02-00254 (Beilstein Handbook Reference) 9H-Xanthene, 1,2,4,5,7,8-hexachloro- BRN 1399805