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Ampicillin sodium/sulbactam sodium (Unasyn) 375 mg Sterile Powder for Injection: Each vial contains ampicillin sodium equivalent to 250 mg ampicillin and sulbactam sodium equivalent to 125 mg sulbactam.
Ampicillin sodium/sulbactam sodium (Unasyn) 750 mg Sterile Powder for Injection: Each vial contains ampicillin sodium equivalent to 500 mg ampicillin and sulbactam sodium equivalent to 250 mg sulbactam.
Ampicillin sodium/sulbactam sodium (Unasyn) 1.5 g Sterile Powder for Injection: Each vial contains ampicillin sodium equivalent to 1,000 mg ampicillin and sulbactam sodium equivalent to 500 mg sulbactam.
Ampicillin sodium is derived from the penicillin nucleus, 6-aminopenicillanic acid. Chemically, it is D(-)-α-aminobenzyl penicillin sodium salt and has a molecular weight of 371.39. Ampicillin sodium/sulbactam sodium IM/IV contains ampicillin sodium and sulbactam sodium in a 2:1 ratio.
Sulbactam sodium is a derivative of the basic penicillin nucleus. Chemically it is sodium penicillanate sulfone and is an off-white crystalline powder highly soluble in water. The molecular weight is 255.22.
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