3-formylthiophen-2-yl-2-boronic acid; CAS No.: 17303-83-2; 3-Formylthiophen-2-yl-2-boronic acid merges aldehyde and boronic acid handles for tandem reactions. As a worldwide chemical supplier, we provide this dual-functional reagent with stability data in protic solvents, enabling one-pot Suzuki-aldehyde condensation cascades for conjugated polymer synthesis.