Used extensively in nuclear magnetic resonance (NMR) spectroscopy as a solvent or internal standard, acetic acid-d aids in the analysis of molecular structures due to its deuterium content, which minimizes interference with hydrogen signals. It is also employed in the synthesis of deuterated compounds, which are crucial in research involving isotopic labeling to study reaction mechanisms and metabolic pathways. Additionally, acetic acid-d finds application in the pharmaceutical industry for the development of deuterated drugs, enhancing their stability and efficacy.