Cefpodoxime proxetil-d3 is a deuterated compound of Cefpodoxime proxetil. Cefpodoxime proxetil has a CAS number of 87239-81-4. Cefpodoxime is an oral third generation cephalosporin antibiotic. It is active against most Gram positive and Gram negative bacteria. It is commonly used to treat acute otitis media, pharyngitis, and sinusitis. Cefpodoxime proxetil is a prodrug which is absorbed and de-esterified by the intestinal mucosa to Cefpodoxime.