Erythromycin Molecular Structure - Macrolide Antibiotic Chemistry #2137650 (License: Personal Use)

This image displays the complete chemical structure of erythromycin A, a naturally occurring macrolide antibiotic produced by *Saccharopolyspora erythraea*. The molecule features a 14-membered lactone ring (erythronolide B) substituted with two deoxy sugars: D-desosamine at C-5 and L-cladinose at C-3. Stereochemical configurations are explicitly marked using wedge/dash bonds, and functional groups-including ketone, ester, hydroxyl, and tertiary amine-are clearly labeled for educational or research use.

Used in pharmacology, medicinal chemistry, and microbiology educational resources; appears in textbooks, academic papers, drug mechanism explainers, and online databases (e.g., PubChem, DrugBank) to illustrate erythromycin’s structure-activity relationship and binding to the bacterial 50S ribosomal subunit.