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Each vial contains ampicillin 1000 mg and sulbactam 500 mg.
Ampicillin sodium is derived from the penicillin nucleus, 6-aminopenicillanic acid. It is D(-)-α-aminobenzyl penicillin sodium salt and has a molecular weight of 371.39.
Sulbactam sodium is a derivative of the basic penicillin nucleus. It is sodium penicillanate sulfone and is an off-white crystalline powder that is highly soluble in water. The molecular weight is 255.22.
Sultamicillin is a combination of ampicillin sodium and sulbactam sodium.
