Quốc gia: Úc
Ngôn ngữ: Tiếng Anh
Nguồn: Department of Health (Therapeutic Goods Administration)
Aztreonam
Gilead Sciences Pty Ltd
Medicine Registered
CAYSTON Product Information v4.0 Page 1 of 17 PRODUCT INFORMATION CAYSTON ® (AZTREONAM FOR INHALATION) NAME OF THE MEDICINE CAYSTON The active substance in CAYSTON is aztreonam. Aztreonam is a monobactam antibiotic. The monobactams are structurally different from beta-lactam antibiotics (e.g., penicillins, cephalosporins, carbapenems) due to a unique monocyclic nucleus. This nucleus contains several side chains; sulfonic acid in the 1- position activates the nucleus, an aminothiazolyl oxime side chain in the 3-position confers specificity for aerobic gram-negative bacteria including _Pseudomonas spp_., and a methyl group in the 4-position enhances beta-lactamase stability. Aztreonam is designated chemically as (Z)-2-[[[(2-amino-4-thiazolyl)[[(2S,-3S)-2- methyl-4-oxo-1-sulfo-3-azetidinyl]caramoyl]methylene]amino]oxy]-2-methylpropionic acid. The structural formula is presented below: N N H S N H 2 N N O O OH H 3 C H 3 C O O H CH 3 SO 3 H H Molecular formula: C 13 H 17 N 5 O 8 S 2 . Molecular weight: 435.435 CAS number: 78110-38-0 DESCRIPTION CAYSTON is a white to off-white powder. It is soluble in water and aqueous solutions. CAYSTON is sterile, hygroscopic, and light sensitive. Once reconstituted with the supplied diluent, the pH range is 4.5 to 6.0. A dose of CAYSTON consists of one vial containing lyophilized aztreonam (75 mg) and lysine (46.7 mg) and one ampoule containing diluent (1 mL sterile saline [0.17% w/v sodium chloride]). The formulations contain no preservatives. CAYSTON Product Đọc toàn bộ tài liệu