Displaying 4 results of Amphotericin B Stable Isotopes Amphotericin B is a polyene macrolide antibiotic commonly used to treat fungal infections. Stable isotopes of Amphotericin B are isotopes of the molecule that do not undergo radioactive decay and can be used for research and diagnostic purposes. These isotopes are chemically identical to the natural compound, but have slightly different masses which can be detected using mass spectrometry. The availability of stable isotopes of Amphotericin B allows for more precise measurements in pharmacokinetic studies and drug metabolism research.