ε-Aminocaproic Acid-d10 Hydrochloride is primarily used in research and analytical applications as a stable isotope-labeled internal standard. It is employed in quantitative mass spectrometry studies to ensure accurate measurement and validation of ε-aminocaproic acid in biological samples. This compound aids in pharmacokinetic and metabolic studies, helping researchers trace and analyze the behavior of ε-aminocaproic acid in various biological systems. Its deuterated form minimizes interference, enhancing the precision and reliability of experimental data. Additionally, it supports the development of diagnostic methods and therapeutic monitoring in clinical settings.