N2,N2-Dimethylpyrimidine-2,4-diamine is primarily used in the synthesis of pharmaceuticals and agrochemicals. It serves as a key intermediate in the production of various drugs, particularly those targeting viral infections and certain types of cancers. In agrochemicals, it is utilized in the development of herbicides and fungicides that help protect crops from diseases and pests. Additionally, this compound is employed in research laboratories for the development of new chemical entities and for studying biochemical pathways. Its role in these applications is crucial due to its ability to act as a building block in complex chemical reactions.