Maxterone-d3 is primarily used in research and development within the pharmaceutical and biochemical fields. It serves as a deuterated internal standard in mass spectrometry, enabling precise quantification and analysis of its non-deuterated counterpart in biological samples. This application is crucial for pharmacokinetic studies, drug metabolism research, and ensuring accuracy in analytical methods. Additionally, it aids in the development of therapeutic agents by providing reliable data for optimizing drug formulations and understanding metabolic pathways. Its use is particularly valuable in advancing studies related to hormone regulation and endocrine disorders.