1,4-Benzenedicarbonitrile, 2-ethylamino-3,5,6-trifluoro- 2-Ethylamino-3,5,6-trifluoro-1,4-benzenedicarbonitrile 2-Ethylamino-3,5,6-trifluoroterephthalonitrile 67205-67-8 BRN 2859863