The chemical Raltegravir potassium has a designated molecular formula of C20H20FKN6O5 and a molecular weight of 482.514 g/mol. Synonyms may include: MK 0518, MK0518, Isentress, N-((4-Fluorophenyl)methyl)-1,6-dihydro-5-hydroxy-1-methyl-2-(1-methyl-1-(((5-methyl-1,3,4-oxadiazol-2-yl)carbonyl)amino)ethyl)-6-oxo-4-pyrimidinecarboxamide monopotassium salt, UNII-43Y000U234 (ChemID). Raltegravir potassium has been assigned a MeSH pharmacological action of: HIV Integrase Inhibitor.