Ceftazidime-d₅  (Synonyms: GR20263-d₅)

Ceftazidime-d₅ (GR20263-d₅) is the deuterium labeled Ceftazidime (HY-B0593). Ceftazidime (GR20263), an antibiotic, has a broad spectrum activity against Gram-positive and Gram-negative aerobic bacteria. Ceftazidime is also active against Enterobacteriaceae (including β-lactamase-positive strains) and is resistant to hydrolysis by most β-lactamases^[1].

1. This compound can be used as a tracer.
2. This compound can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.

Stable heavy isotopes of hydrogen, carbon, and other elements have been incorporated into drug molecules, largely as tracers for quantitation during the drug development process. Deuteration has gained attention because of its potential to affect the pharmacokinetic and metabolic profiles of drugs.

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

551.61

C₂₂H₁₇D₅N₆O₇S₂

78439-06-2

Solid

White to off-white

[H][C@]1(N2C(C([O-])=O)=C(CS1)C[N+]3=C(C([2H])=C(C([2H])=C3[2H])[2H])[2H])[C@](NC(/C(C4=CSC(N)=N4)=N\OC(C)(C(O)=O)C)=O)(C2=O)[H]

Room temperature in continental US; may vary elsewhere.

-20°C, protect from light, stored under nitrogen

*In solvent : -80°C, 6 months; -20°C, 1 month (protect from light, stored under nitrogen)

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (protect from light, stored under nitrogen). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

• [1]. Richards DM, et al. Ceftazidime. A review of its antibacterial activity, pharmacokinetic properties and therapeutic use. Drugs. 1985 Feb;29(2):105-61.  [Content Brief]

  [2]. Esmat Kamali, et al. In vitro activities of cellulase and ceftazidime, alone and in combination against Pseudomonas aeruginosa biofilms. BMC Microbiol. 2021 Dec 16;21(1):347.  [Content Brief]

  [3]. Qiuxia Lin, et al. Avibactam potentiated the activity of both ceftazidime and aztreonam against S. maltophilia clinical isolates in vitro. BMC Microbiol. 2021 Feb 22;21(1):60.  [Content Brief]

  [4]. Shawn H MacVane, et al. Unexpected in vivo activity of ceftazidime alone and in combination with avibactam against New Delhi metallo-β-lactamase-producing Enterobacteriaceae in a murine thigh infection model. Antimicrob Agents Chemother. 2014 Nov;58(11):7007-9.  [Content Brief]