The chemical Ibuprofen has a designated molecular formula of C13H18O2 and a molecular weight of 206.285 g/mol. Synonyms may include: U-18,573, Acide (isobutyl-4-phenyl)-2 propionique [French], Adran, Advil, Andran, Anflagen, Artril 300, Benzeneacetic acid, alpha-methyl-4-(2-methylpropyl)-, Bluton, BRN 2049713, Brufanic (ChemID). Ibuprofen has been assigned a MeSH pharmacological action of: Cyclooxygenase Inhibitor.