SPL Set ID: f1a01044-8f2e-4e91-e053-2995a90af722

Mupirocin Ointment USP, 2% contains the RNA synthetase inhibitor antibacterial, mupirocin. The chemical name is (E)-(2S,3R,4R,5S)-5-[(2S,3S,4S,5S)-2,3-epoxy-5-hydroxy-4-methylhexyl] tetrahydro-3,4-dihydroxy-ß-methyl-2H-pyran-2-crotonic acid, ester with 9-hydroxynonanoic acid. The molecular formula of mupirocin is C26H44O9, and the molecular weight is 500.6. The structural formula of mupirocin is: Figure 1. Structure of Mupirocin Each gram of mupirocin ointment, 2% contains 20 mg mupirocin in a water-miscible ointment base (polyethylene glycol ointment) consisting of polyethylene glycol 400 and polyethylene glycol 3350. Description