2-[(5-Methyl-2-thiazolyl)amino]-2-oxoacetic Acid is a metabolite of Meloxicam (M216100(P)), that was studied in human liver microsomes. Meloxicam is a preferential cyclooxygenase (COX-2) inhibitor. Sudoxicam and Meloxicam are nonsteroidal anti-inflammatory drugs (NSAIDs) from the enol-carboxamide class.