Used as an internal standard in analytical chemistry, particularly in mass spectrometry, for the quantification of androstane-3α,17β-diol 17-glucuronide in biological samples. It aids in ensuring accuracy and precision in measurements during studies related to steroid metabolism, endocrine research, and clinical diagnostics. Its deuterated form allows for reliable tracking and differentiation from the non-labeled compound in complex matrices like urine or blood. This application is crucial in understanding hormonal imbalances, metabolic disorders, and drug development.