N1-Methyl-4-nitrobenzene-1,2-diamine is primarily used in the synthesis of dyes and pigments, particularly in the production of azo dyes. These dyes are widely applied in the textile industry for coloring fabrics, offering vibrant and long-lasting hues. Additionally, it serves as an intermediate in the manufacture of hair dyes, providing a range of shades from natural tones to more vivid colors. In the field of organic chemistry, it is utilized in research and development for creating complex molecules, often as a building block in the synthesis of pharmaceuticals and other specialty chemicals. Its nitro and amino functional groups make it a versatile compound in various chemical reactions, contributing to its importance in industrial and laboratory settings.