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Global 1,2,3,4-Tetramethylbenzene (CAS 488-23-3) market size was valued at USD 215.4 million in 2025. The market is projected to grow from USD 224.6 million in 2026 to USD 342.8 million by 2034, exhibiting a CAGR of 4.8% during the forecast period. 1,2,3,4-Tetramethylbenzene, also known as prehnitene, is an aromatic hydrocarbon belonging to the tetramethylbenzene isomer group, distinguished by four methyl substituents positioned symmetrically on a benzene ring. It is primarily recovered from coal tar distillation fractions and catalytic reformate streams, and serves as a critical intermediate in the synthesis of specialty chemicals—most notably trimellitic anhydride and pyromellitic dianhydride—which are widely utilized in the production of high-performance polyimide resins, plasticizers, and advanced polymer materials. While the compound shares its molecular formula with other C10 aromatic isomers, its unique geometric configuration imparts distinct chemical reactivity that makes i...