BPA27s, or bisphenol A derivatives, are compounds related to bisphenol A (BPA), a chemical used in the production of various plastics and resins. BPA27s are often studied for their potential endocrine-disrupting effects and their presence in consumer products. Research is ongoing to understand their toxicity, environmental impact, and implications for human health. These compounds highlight the need for careful regulation and assessment of materials used in everyday products.