Resolvin D1-d5 is widely used in biomedical research to study inflammation resolution processes. It serves as a stable isotopic analog of Resolvin D1, allowing researchers to track and quantify its behavior in biological systems using techniques like mass spectrometry. This compound is particularly valuable in investigating the mechanisms of anti-inflammatory and pro-resolving actions in various disease models, such as arthritis, asthma, and cardiovascular disorders. Its application helps elucidate how specialized pro-resolving mediators (SPMs) contribute to tissue repair and inflammation control, providing insights for developing therapeutic strategies targeting chronic inflammatory conditions.