Dirithromycin is a lipid soluble prodrug derivative of the macrolide antibiotic 9S-erythromycyclamine. It has a sizeable antibiotic activity range, being effective against gram positive and gram negative bacteria. It is highly insoluble in acidic and alkaline conditions and will spontaneously hydrolyze into the active erythromycyclamine form.
Macrolide antibiotics are composed of a macrocyclic lactone ring attached to one or more deoxy sugars. They inhibit bacterial protein synthesis by irreversibly binding the P site of the 50s ribosome, preventing peptide bond formation and translocation.
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.
MW: 835.07 g/mol
Storage/Handling: Store desiccated at room temperature.
PubChem Chemical ID: 6473883