[CAS NO. 104376-79-6]  Ceftriaxone disodium salt hemi (heptahydrate)

Ceftriaxone disodium salt hemi(heptahydrate) is a third-generation cephalosporin antibiotic has a broad spectrum of activity in vitro which includes Gram-positive and Gram-negative aerobic and some anaerobic bacteria. Both penicillin-sensitive and –resistant strains of are sensitive to Ceftriaxone (MIC90, 2 to 8 mg/L), but the drug is poorly active against methicillin- or oxacillin-resistant strains. Creftriaxone is similar in activity to several penicillins and other cephalosporins against , and is also active in low concentrations against other species. is only moderately sensitive and is usually resistant to Ceftriaxone. Ceftriaxone is generally more active than cefoperazone, and is similar in activity to cefotaxime and latamoxef against Gram-negative bacilli. 90% of tested strains of most Enterobacteroacae are inhibited by a Ceftriaxone concentration of < 1 mg/L. The reported activity of Ceftriaxone against varies widely, but generally at least 32 mg/L is required to inhibit most strains, and is thus usually less active than the aminoglycosides, aztreonam, imipenem, cefoperazone, ceftazidime, carumonam and piperacillin.