Bisphenol A, CAS 80-05-7, is an aromatic diphenolic compound with the formula C15H16O2 and molecular weight 228.29 g/mol. It is a high-volume industrial monomer used in polycarbonate and epoxy resin manufacture, and its presence as an impurity is typically associated with residual synthesis material, hydrolytic release from polymeric matrices, or migration from can coatings and consumer plastics. Regulatory assessment focuses on endocrine activity, reproductive toxicity, and environmental persistence rather than ICH M7 genotoxic impurity categorization. Quantification generally requires LC-MS/MS or GC-MS, often with derivatization and isotope dilution to resolve trace-level occurrence in complex matrices.
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