1,3-Benzenedicarbonitrile, 4-hydroxy-2,5,6-trichloro-, 4-butylcarbamate 4-Hydroxy-2,5,6-trichloro-1,3-benzenedicarbonitrile, 4-butylcarbamate 4-Hydroxy-2,5,6-trichloroisophthalonitrile, 4-butylcarbamate 67205-43-0 BRN 2674223