Sultamicillin tosylate

Description: Sultamicillin Tosylate, the tosylate salt form of Sultamicillin which is a double ester of sulbactam and ampicillin. Sultamicillin (formerly known as CP-49952 and VD 1827) is an orally available, mutual prodrug form of ampicillin and sulbactam. As an antibiotic combination (co-drug or mutual prodrug) of ampicillin/sulbactam, it contains esterified ampicillin and sulbactam and is marketed under a number of trade names, e. g. Unasyn from Pfizer. Ampicillin is a semi-synthetic orally active broad spectrum antibiotic which is linked via a methylene group with a beta-lactamase inhibitor. Sultamicillin is chemically oxymethyl penicillinate sulfone ester of ampicillin. After absorption, sultamicillin releases ampicillin and sulbactam into the system, so all the antibacterial efficacy of sultamicillin is due to ampicillin and sulbactam. Ampicillin exerts antibacterial activity against sensitive organisms by inhibiting biosynthesis of cell wall mucopeptide where as sulbactam irreversibly inhibits most important beta-lactamases that occur in resistant strains.

References: Hautarzt. 2018 Jun; 69(6):484-486.

Related CAS#: 76497-13-7 (free); 76203-99-1 (HCl)