orthosomycin antibiotic evernimicin Evernimicin is a veterinary oligosaccharide antibiotic of the orthosomycin group of orthoester antibiotics. Along with avilamycin, it exhibits activity against a variety of Gram-positive and -negative bacteria and is primarily used in livestock feed. antibiotic_resistance ChEMBL:CHEMBL5283245 PubChem:6917933 everninomicin ARO:3007167