AureChem provides high-purity 4,4'-Oxybisbenzoic chloride (ODBC/DEDC), CAS 7158-32-9. This aromatic diacid chloride, which features a flexible ether linkage, is a key reactive monomer for synthesizing polyimides and specialty polymers with high thermal stability, mechanical strength, and chemical resistance, making it suitable for applications in aerospace, electronics, and advanced materials.