Chlortetracycline HCl, USP Grade

Chlortetracycline, isolated from Streptomyces aureofaciens, was the first tetracycline antibiotic discovered. It has shown the most efficacy against gram-positive organisms, but is also effective on a variety of gram-negative bacteria. Resistance to chlortetracycline arises from a loss of cell wall permeability.

Tetracyclines are antibiotics made up of a four-ring system. They bind the 30s ribosomal subunit, preventing the aminoacyl-tRNA from attaching to the A site. Consequently, protein synthesis is inhibited.

Antibiotics are often used in clinical in vitro tests known as antimicrobial susceptibility tests or ASTs to determine their efficacy against certain bacterial species. They are tested against gram-negative and gram-positive bacteria using panels, discs, and MIC strips by medical microbiologists. ASTs decrease the risk of using an antibiotic against bacteria exhibiting resistance to it, and the results are used in clinical settings to determine which antibiotic(s) to prescribe for various infections.

Product Specifications
Chlortetracycline HCl, USP Grade
7-Chlorotetracycline, USP Grade

Formula: C₂₂H₂₃ClN₂O₈ ∙ HCl

MW: 515.34 g/mol

Storage/Handling: Store at -20°C. Protect from light.

PubChem Chemical ID: 54684459