Used as a reference standard or impurity marker in the quality control of Dabigatran etexilate, a widely used anticoagulant. It helps in identifying and quantifying impurities during the manufacturing process to ensure drug purity and safety. Commonly employed in pharmaceutical analysis, especially in HPLC and mass spectrometry methods, to monitor degradation products and synthetic by-products. Also useful in stability studies and method development for accurate detection of active pharmaceutical ingredient variants.