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4,4,5,5-tetramethyl-2-(thiophen-3-yl)-1,3,2-dioxaborolane; CAS No.: 214360-70-0; Thiophen-3-yl boronic ester serves as a less common regioisomer for conjugated polymer diversification. The C3 substitution creates non-linear conjugation pathways. Through Leading Chemicals Distributor networks, we supply these alternative regioisomers for organic electronics R&D.