Used primarily as a reference standard or impurity marker in pharmaceutical analysis, particularly in the quality control of dabigatran etexilate, an anticoagulant medication. It helps in detecting and quantifying nitrosamine impurities, which are potential carcinogens, ensuring drug safety and regulatory compliance. Monitoring levels of N-Nitrosodabigatran Etexilate is critical in minimizing patient exposure to harmful nitrosamines during long-term treatment.