Celecoxib, a COX-II inhibitor

Celecoxib {4-[5-(4-methylphenyl)-3-trifluoromethyl-1H-pyrazol-1-yl]benezenesulfonamide} is one of the selective COX-II inhibitors with anti-inflammatory activity. The molecules are connected into a chain by an intermolecular hydrogen bond between the N and O atoms of sulfonamide groups in neighbouring molecules.

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