4-fluoro-3-trifluoromethyl benzonitrile is a 3-trifluoromethyl 4-halonitrile compound. 3-trifluoromethyl 4-halonitrile is an important component of many dyes, herbicides, pharmaceuticals and natural compounds, as well as an important intermediate in organic synthesis. The cyanide group can be converted into a series of compounds such as ketone, amide, carboxylic acid, imide ester, carboxylic ester and thioamide