Used primarily as a reference standard or impurity marker in the pharmaceutical industry for quality control and analytical testing of vonoprazan, a potassium-competitive acid blocker (P-CAB) used in the treatment of gastroesophageal reflux disease (GERD) and Helicobacter pylori infection. It helps in identifying and quantifying impurities during the manufacturing and stability testing of vonoprazan formulations. Its presence is monitored to ensure drug purity, safety, and regulatory compliance. Also utilized in research settings for method development in HPLC and LC-MS techniques to improve detection and separation of related compounds in drug matrices.