2,3,5,6-Tetrafluorobenzonitrile, also referred to as TFB, is a chemical compound categorized as a benzonitrile derivative. With the molecular formula C7HF4N, it features a benzene ring substituted with four fluorine atoms at the 2nd, 3rd, 5th, and 6th positions. TFB exists as a colorless solid and possesses unique properties that make it suitable for various industrial and scientific applications.