Used as a key intermediate in the synthesis of functional organic materials, particularly in the development of conjugated polymers and conductive dyes. Its aldehyde groups enable condensation reactions to form Schiff bases, which are useful in creating metal-organic frameworks (MOFs) and covalent organic frameworks (COFs). The ethylthio substituents enhance solubility and influence electronic properties, making it valuable in designing organic semiconductors and sensors. Also employed in research for optoelectronic devices due to its ability to tune charge transport characteristics.