Mupirocin DESCRIPTION NewsLinks Each gram of Bactroban ointment 2% contains 20 mg mupirocin in a bland water miscible ointment base (polyethylene glycol ointment) consisting of polyethylene glycol 400 and polyethylene glycol 3350. Mupirocin is a naturally occurring antibiotic. The chemical name is (E)-(2S, 3R, 4R, 5S)-5- tetrahydro-3, 4-dihydroxy-b-methyl-2H-pyran-2-crotonic acid, ester with ...

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