3,4-Xylidine is an organic compound with the formula C6H3(CH3)2NH2.

It is a precursor for the production of riboflavin (vitamin B2).

[1] The compound is prepared by two routes: hydrogenation of (2-chloromethyl)-4-nitrotoluene and reaction of the bromoxylene with ammonia.

[1] Like other xylidines, 3,4-xylidine has modest toxicity with an LD50 of 812 mg/kg when administered orally to rats.

[1] 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.