Used primarily in research settings as a deuterated internal standard for quantitative mass spectrometry analysis. It enables accurate measurement of medroxyprogesterone levels in biological samples such as plasma, serum, or urine by serving as a stable isotope-labeled analog. This compound is essential in pharmacokinetic studies, doping control, and hormone metabolism research where precise and reliable detection is required. Its deuterium labeling minimizes interference from endogenous compounds, ensuring high specificity and sensitivity in analytical assays.