1,3-Benzenedicarbonitrile, 4-hydroxy-2,5,6-trichloro- 1,3-DICYANO-4-HYDROXY-2,5,6-TRICHLOROBENZENE 28343-61-5 4-Hydroxy-2,5,6-trichloro-1,3-benzenedicarbonitrile 4-Hydroxy-2,5,6-trichloroisophthalonitrile BRN 2653044