2-Methoxyphenothiazine finds its primary application in the field of organic synthesis, where it serves as a valuable intermediate in the production of various pharmaceuticals. Its structure is particularly useful in the development of antipsychotic and antihistamine drugs, where the phenothiazine core plays a crucial role in biological activity. Additionally, it is utilized in research settings to study the effects of methoxy-substituted phenothiazines on biological systems, aiding in the discovery of new therapeutic agents. The compound is also explored in material science for the synthesis of organic semiconductors and photoconductive materials, due to its electron-rich aromatic system.