Canagliflozin-d4 is primarily used in research and development as a labeled internal standard in analytical studies. It plays a crucial role in quantitative analysis, particularly in mass spectrometry, where it helps ensure accurate measurements of canagliflozin in biological samples. This application is essential for pharmacokinetic studies, drug metabolism research, and monitoring therapeutic drug levels in patients. Its use enhances precision and reliability in data interpretation, supporting advancements in diabetes treatment and related pharmaceutical investigations.