Azlocillin sodium salt - CAS 37091-65-9
Catalog number: 37091-65-9
Category: Inhibitor
Not Intended for Therapeutic Use. For research use only.
Molecular Formula:
Molecular Weight:
Azlocillin is an acylampicillin antibiotic with an extended spectrum of activity and greater in vitro potency than the carboxy penicillins. Azlocillin is similar to mezlocillin and piperacillin. It demonstrates antibacterial activity against a broad spectrum of bacteria, including Pseudomonas aeruginosa and, in contrast to most cephalosporins, exhibits activity against enterococci.
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1.Pharmacokinetics of high-dose azlocillin sodium in patients with cystic fibrosis.
Woolf RA, Koup JR, Smith AL, Hilman BC, Goldmann D, Williams-Warren J. Clin Pharm. 1985 Nov-Dec;4(6):664-9.
The pharmacokinetics of high-dose azlocillin sodium was studied in 18 patients with cystic fibrosis. Nine male and nine female patients with a mean age of 14.7 years (range 3 to 29 years) participated in the study. They received azlocillin 450 mg/kg/day (as the sodium salt) in six divided doses. During a steady-state dosing interval, a dose of azlocillin was coadministered with a 10-mg/kg dose of iothalamate sodium as a 30-minute infusion. Serum concentrations of azlocillin and iothalamate were determined by high-pressure liquid chromatography assay. The data were analyzed using model-independent methods. The mean elimination rate constant for azlocillin was 0.64 +/- 0.22 hr-1 and the mean serum half-life was 1.22 +/- 0.39 hr. Total clearance of azlocillin, calculated by noncompartmental analysis, was 77.2 +/- 26.4 mL/min/sq m. Glomerular filtration rate, as estimated by measuring iothalamate clearance, was 79.6 +/- 21.9 mL/min/sq m. The total clearance of azlocillin correlated with iothalamate clearance.
2.Multiple-dose pharmacokinetics of piperacillin and azlocillin in 12 healthy volunteers.
Tartaglione TA, Nye L, Vishniavsky N, Poynor W, Polk RE. Clin Pharm. 1986 Nov;5(11):911-6.
The pharmacokinetic profile of piperacillin and azlocillin after multiple-dose administration to healthy volunteers was studied. Twelve healthy volunteers received either piperacillin 4 g (as the sodium salt) or azlocillin 4 g (as the sodium salt) as a 20-minute infusion every six hours for five doses. After a one-week washout period, subjects received identical treatment with the alternate drug. Serum and urine concentrations of piperacillin and azlocillin were measured using a reversed-phase high-performance liquid chromatographic assay, and the pharmacokinetic analysis of serum concentration-versus-time data was performed using a computerized program. A standard open-model equation for i.v. infusions was used. Mean serum concentrations of piperacillin and azlocillin after dose 5 were 344 +/- 66 micrograms/mL and 414 +/- 86 micrograms/mL, respectively. The terminal elimination half-life of azlocillin (1.1 +/- 0.2 hr) was significantly longer than that of piperacillin (0.
3.Controlled trial of aztreonam vs. tobramycin and azlocillin for acute pulmonary exacerbations of cystic fibrosis.
Bosso JA1, Black PG. Pediatr Infect Dis J. 1988 Mar;7(3):171-6.
The efficacy of aztreonam was compared to that of standard therapy consisting of tobramycin and azlocillin in the treatment of acute pulmonary exacerbations of cystic fibrosis in a randomized, open trial. Fifteen patients were randomized to each treatment. Responses were assessed based on changes in pulmonary and clinical scores, white blood cell counts, pulmonary function tests and quantitative bacteriology of sputum which were performed before, every 5 to 7 days during and on the last day of therapy. Patients in both groups responded to therapy and there were no statistically significant differences in changes in the above indicators of response with therapy between the two groups (P greater than 0.05). The incidence of detection of Pseudomonas aeruginosa isolates resistant to all three study antibiotics increased with therapy. Side effects were limited to transient elevations of liver enzymes (both groups) and rash and fever in one patient treated with azlocillin.
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CAS 37091-65-9 Azlocillin sodium salt

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