3,4-Xylidine
3,4-Xylidine is an organic compound with the formula CH(CH)NH. It is one of several isomeric xylidines. It is a colorless solid. It is a precursor for the production of riboflavin (vitamin B). The compound is prepared by two routes: hydrogenation of (2-chloromethyl)-4-nitrotoluene and reaction of the bromoxylene with ammonia. Safety. Like other xylidines, 3,4-xylidine has modest toxicity with an of 812 mg/kg when administered orally to rats. In 2003, more than twenty US Army troops were allegedly exposed to 3,4-xylidine during the occupation of Iraq, leading to a number of health complaints