Used primarily as a reference standard in pharmaceutical quality control, this compound serves as a key impurity marker in the analysis of amoxicillin. It helps in validating analytical methods, ensuring accurate detection and quantification of impurities during the manufacturing process. Its presence is monitored to maintain drug purity, assess degradation pathways, and comply with regulatory requirements for antibiotic formulations. It is also employed in stability studies to evaluate the shelf life and storage conditions of amoxicillin-based products.