Methyl 3-methyl-2-naphthoate is primarily used in the synthesis of organic compounds, particularly in the development of dyes and pigments. Its structure makes it a valuable intermediate in creating colorants for textiles, plastics, and inks, offering stability and vibrant hues. Additionally, it finds application in the production of pharmaceuticals, where it serves as a building block for active ingredients in certain medications. Its role in research and development is also notable, as it aids in the study of complex organic reactions and the creation of novel chemical entities.