Used as a stable isotope-labeled internal standard in mass spectrometry and metabolic studies to trace fatty acid metabolism. Enables accurate quantification and differentiation from endogenous myristic acid due to its deuterium label. Commonly applied in lipidomics and biochemical research involving protein myristoylation, where tracking the incorporation of myristate into proteins is essential. Also utilized in studies of inflammation and signal transduction pathways due to myristic acid’s role in modifying signaling proteins.