Hexahydroxybenzene, also known as benzenehexol, is an organic compound with the molecular formula C6(OH)6. It is a highly symmetrical molecule featuring a benzene ring substituted with six hydroxyl groups. This structure makes it a powerful reducing agent and a versatile precursor for the synthesis of various functional materials. Its primary industrial and research significance lies in its role as a key building block for the synthesis of organic semiconductors and functional dyes. It serves as a crucial precursor for the preparation of hexaazatriphenylene (HAT) derivatives, which are important n-type organic semiconductor materials used in organic light-emitting diodes (OLEDs) and organic field-effect transistors (OFETs). Additionally, it is used in the synthesis of metal-organic frameworks (MOFs) and covalent organic frameworks (COFs) due to its multiple coordination and polymerization sites. Due to its high density of hydroxyl groups, it is also studied as a component in the synthesis of hyperbranched polymers and as a ligand in coordination chemistry. However, its commercial availability is limited, and it is primarily a specialty chemical for advanced material research rather than a bulk commodity.