Descarboxy 1-Hydroxy Ketorolac is primarily used in pharmaceutical research and development, especially in studying the metabolism of non-steroidal anti-inflammatory drugs (NSAIDs) like ketorolac. As a key metabolite formed from the transformation of ketorolac, it aids in understanding the body's drug elimination mechanisms and evaluating long-term safety profiles. It also serves as a reference standard for analyzing drug residues in biological samples, such as plasma or urine, to monitor therapeutic levels and metabolic alterations.