Overview
Amphotericin B is a macrocyclic polyene antibiotic derived from Streptomyces nodosus, first isolated in 1955. It remains a critical antifungal agent despite its toxicity profile, particularly for life-threatening systemic fungal infections. The drug exists in several formulations, including the conventional deoxycholate complex (Fungizone) and lipid-based versions (e.g., liposomal Amphotericin B) that reduce toxicity. As a B2B pharmaceutical ingredient, Amphotericin B is manufactured under strict Good Manufacturing Practice (GMP) standards. Bulk procurement typically involves pharmaceutical companies, hospital networks, and government health agencies preparing sterile formulations for clinical use.
Physical and Chemical Properties
Amphotericin B is a yellow-orange crystalline powder with poor water solubility but dissolves in dimethyl sulfoxide (DMSO). Its structure contains a macrolide ring with seven conjugated double bonds and a mycosamine sugar moiety, which contribute to its antifungal activity by binding to ergosterol in fungal cell membranes. The compound is heat-sensitive and degrades above 170°C. It exhibits amphoteric properties (hence the name), being soluble in both acidic and basic conditions. Photodegradation occurs under UV light, necessitating storage in amber vials or opaque containers. Analytical methods like HPLC are used for purity verification in B2B transactions.
Main Applications
In clinical practice, Amphotericin B treats invasive fungal infections including cryptococcal meningitis, disseminated candidiasis, and mucormycosis. It's often reserved for cases resistant to azole antifungals or in immunocompromised patients (e.g., HIV/AIDS, transplant recipients). The liposomal formulation reduces nephrotoxicity for prolonged therapy. Beyond human medicine, veterinary applications include treating fungal infections in livestock. Some agricultural research explores its potential against plant pathogens, though cost limits widespread use. B2B buyers should specify intended use (human/veterinary) to ensure appropriate regulatory compliance and formulation selection.
Safety and Storage
Amphotericin B requires careful handling due to its toxicity profile. Personal protective equipment (PPE) including gloves, goggles, and respirators are mandatory during powder handling to prevent inhalation or skin contact. Spills should be contained with absorbent materials and disposed as hazardous waste. Storage demands refrigeration (2-8°C) in airtight, light-resistant containers with desiccants to prevent moisture absorption. Stability testing indicates 24-month shelf life under proper conditions. Transport requires cold chain maintenance, typically with validated insulated packaging and temperature monitoring for international B2B shipments.
B2B Procurement Guide
When sourcing Amphotericin B, prioritize suppliers with documented GMP compliance and auditable manufacturing processes. Key procurement factors include: certificate of analysis (CoA) with ≥95% purity, residual solvent testing (especially for DMSO), and sterility assurance for API destined for injectable formulations. For export transactions, verify import license requirements in the destination country—many classify Amphotericin B as a controlled substance. Negotiate Incoterms specifying temperature-controlled logistics responsibility. Sample testing through third-party labs is advisable for new suppliers. Bulk orders (1kg+) commonly attract 10-20% price reductions, though minimum order quantities apply.
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