2017年11月30日星期四

Omadacycline hydrochloride|cas: 1196800-39-1

Omadacycline hydrochloride|cas: 1196800-39-1

DC Chemicals, Website: www.dcchemicals.com

Product Name: Omadacycline hydrochloride|Cas Number: 1196800-39-1| Catalog Number: DC10365|Other Nmaes: PTK 0796 hydrochloride; PTK-0796 hydrochloride; PTK0796 hydrochloride; Amadacycline hydrochloride

Omadacycline hydrochloride is novel, aminomethyl tetracycline antibiotic being developed for the treatment of community-acquired bacterial infections. The ED50 for Escherichia coli is 2.02 mg/kg.

The omadacycline MIC90s for MRSA, VRE, and beta-hemolytic streptococci are 1.0 μg/mL, 0.25 μg/mL, and 0.5 μg/mL, respectively, and the omadacycline MIC90s for PRSP and H. influenzae are 0.25 μg/ml and 2.0 μg/mL, respectively. Omadacycline is active against organisms demonstrating the two major mechanisms of resistance, ribosomal protection and active tetracycline efflux[1]. Omadacycline inhibits protein synthesis while having no significant effect on RNA, DNA and peptidoglycan synthesis. Further, omadacycline binds to the tetracycline binding site on the 30S subunit of the bacterial ribosome with enhanced binding similar to tigecycline based on additional molecular interactions[2].In vivo efficacy of omadacycline is demonstrated using an intraperitoneal infection model in mice. A single intravenous dose of omadacycline exhibits efficacy against Streptococcus pneumoniae, Escherichia coli, and Staphylococcus aureus, including tet (M) and tet (K) efflux-containing strains and MRSA strains. The 50% effective doses (ED50s) for Streptococcus pneumoniae obtained ranged from 0.45 mg/kg to 3.39 mg/kg, the ED50s for Staphylococcus aureus obtained ranges from 0.30 mg/kg to 1.74 mg/kg, and the ED50 for Escherichia coli is 2.02 mg/kg[1].

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