Used as a deuterated internal standard in analytical chemistry for precise quantification of non-deuterated analogs in mass spectrometry. It is particularly valuable in environmental and pharmaceutical research, where accurate measurement of trace compounds is critical. The deuterium labeling helps distinguish it from the analyte, reducing interference and improving analytical accuracy. Additionally, it serves as a building block in organic synthesis for creating deuterated compounds in studies of metabolic pathways or drug development. Its stability and isotopic purity make it a reliable tool in isotopic labeling experiments.