Amphotericin B, USP is a polyene antifungal or antimycotic compound derived from Streptomyces nodosus. Amphotericin B is nearly insoluble in water but can be solubilized in sodium deoxycholate.
Amphotericin B, USP meets United States Pharmacopoeia specifications.
CAS Number
1397-89-3
Molecular Formula
C47H73NO17
Molecular Weight
924.08
Mechanism of Action
Amphotericin B associates with membrane sterols in mammalian and fungal cell membranes. Amphotericin B forms a pore in these membranes leading to essential ion leakage and ultimately, cell death.
Storage Conditions
2-8°C
Tariff Code
2941.90.1050
Spectrum
Amphotericin B is active against mammalian and fungal (molds and yeasts) cells. Amphotericin B is not toxic to bacteria due to their lack of sterols.The following represents MIC susceptibility data for amphotericin B against common fungal pathogens:
- Candida albicans - 0.001 - 321 μg/mL
- Candida krusei - 0.001 - 16 μg/mL
- Coccidioides immitis - 0.0625 - 2 μg/mL
- Cryptococcus neoformans - 0.2 - 39 μg/mL
- Fusarium oxysporum - 0.75 - 125 μg/mL
Form
Powder
Appearance
Yellow or orange powder
Source
Streptomyces nodosus
Water Content (Karl Fisher)
≤5.0%
Assay
(On Dried Basis)L: ≥750 µg/mg
Loss on Drying
≤5.0%
Residue On Ignition
≤0.5%
Impurities
Amphotericin A: ≤15.0%
Endotoxin
≤0.9 EU/mg