Tetrakis(methylthio)tetrathiafulvalene is primarily used in the field of organic electronics due to its excellent electron-donating properties. It is often employed as a key component in the synthesis of organic conductors and superconductors. This compound is particularly valuable in the development of charge-transfer complexes, which are essential for creating materials with high electrical conductivity. Additionally, it finds applications in the fabrication of organic field-effect transistors (OFETs) and other electronic devices where efficient charge transport is crucial. Its unique structure also makes it a candidate for use in molecular electronics and as a building block for more complex organic materials with tailored electronic properties.