Artemisinin-d3 is primarily used in research and development within the pharmaceutical and medical fields. It serves as a labeled internal standard in mass spectrometry for the quantification of artemisinin and its derivatives in biological samples. This application is crucial for pharmacokinetic studies, where understanding the absorption, distribution, metabolism, and excretion of artemisinin-based drugs is essential. Additionally, it aids in the development of new antimalarial therapies by providing precise measurements of drug concentrations in various tissues and fluids. Its use ensures accuracy and reliability in analytical methods, contributing to advancements in malaria treatment and drug efficacy studies.