3,3'-(o-Chlorobenzylidene)bis(4-hydroxycoumarin) 3,3'-(o-Chlorobenzylideno)-bis-4-hydroksykumaryn [Polish] 4322-58-1 5-19-06-00707 (Beilstein Handbook Reference) BRN 1273622 COUMARIN, 3,3'-(o-CHLOROBENZYLIDENE)BIS(4-HYDROXY- OCBD