Used as an internal standard in mass spectrometry-based lipidomics to accurately quantify lysophosphatidylcholines in biological samples. Its deuterated acyl chain provides a distinct mass shift, enabling clear differentiation from endogenous lipids and minimizing interference from matrix effects. This compound is particularly valuable in metabolic studies, biomarker discovery, and clinical diagnostics where precise measurement of lipid metabolites is critical. It aids in assessing lipid metabolism pathways and can support research in diseases such as cancer, diabetes, and cardiovascular disorders.