Primarily used in organic synthesis, this compound serves as a key intermediate in the production of various pharmaceuticals. Its structure is particularly valuable in the development of antipsychotic and antihistamine drugs, where the phenothiazine core plays a critical role in biological activity. Additionally, it is utilized in the creation of advanced materials, such as organic semiconductors and light-emitting diodes (LEDs), due to its electron-donating properties. In research, it is employed as a building block for designing novel compounds with potential therapeutic or electronic applications. Its versatility makes it a valuable asset in both medicinal chemistry and materials science.