Benzo[b]thiophene-6-carbonitrile is primarily used in the field of organic synthesis and pharmaceutical research. It serves as a key intermediate in the development of various biologically active compounds. Its structure is particularly valuable in the synthesis of heterocyclic compounds, which are often explored for their potential therapeutic properties. This chemical is also utilized in the creation of materials for organic electronics, such as organic light-emitting diodes (OLEDs) and semiconductors, due to its electron-deficient nature and stability. Additionally, it finds application in agrochemical research for the development of novel pesticides and herbicides.