polyene antibiotic amphotericin B ARO:3007504 ChEBI:2682 ChEMBL:CHEMBL267345 antibiotic_resistance PubChem:5280965 Amphotericin B is an antibiotic, particularly antifungal, derived from polyene. It exhibits strong antifungal action against a variety of fungi species and is typically considered the gold standard of antifungals. CAS:1397-89-3