The chemical Diclofenac potassium has a designated molecular formula of C14H10Cl2KNO2 and a molecular weight of 334.237 g/mol. Synonyms may include: Cataflam, Voltfast, UNII-L4D5UA6CB4, Zipsor, Cambia (ChemID). Diclofenac potassium has been assigned a MeSH pharmacological action of: Cyclooxygenase Inhibitor.