Legal Information Sold for research purposes under agreement from Pfizer Inc. Biochem/physiol Actions Celecoxib is a non-steroidal, anti-inflammatory drug (NSAID) and a cyclooxygenase-2 (COX-2) selective inhibitor. Celecoxib is at least 10-20 times more selective for COX-2 over COX-1. Other Notes Tandem Mass Spectrometry data independently generated by Scripps Center for Metabolomics is available to view or download in PDF. PZ0008.pdf Tested metabolites are featured on Scripps Center for Metabolomics METLIN Metabolite Database. To learn more, visit sigma.com/metlin.