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A2411 Sigma-Aldrich

Amphotericin B from Streptomyces sp.

BioReagent, suitable for cell culture, ~80% (HPLC)

Synonym: Fungizone

  • CAS Number 1397-89-3

  • Empirical Formula (Hill Notation) C47H73NO17

  • Molecular Weight 924.08

  •  Beilstein/REAXYS Number 78342

  •  EC Number 215-742-2

  •  MDL number MFCD00877763

  •  PubChem Substance ID 24890655

  •  NACRES NA.76



Related Categories Antibiotics, Antibiotics A to Z, Antibiotics by Mechanism of Action, Antibiotics  A-F, Antifungal,
Quality Level   300
biological source   Streptomyces sp.
product line   BioReagent
assay   ~80% (HPLC)
form   solid
potency   >750.00 μg per mg (Dry basis)
application(s)   cell culture | mammalian: suitable
color   yellow to yellow-orange
solubility   H2O: slightly soluble
Mode of action   cell membrane | interferes
antibiotic activity spectrum   fungi
storage temp.   2-8°C
SMILES string   C[C@H]1O[C@@H](O[C@@H]2C[C@@H]3O[C@](O)(C[C@@H](O)C[C@@H](O)[C@H](O)CC[C@@H](O)C[C@@H](O)CC(=O)O[C@@H](C)[C@H](C)[C@H](O)[C@@H](C)\C=C\C=C\C=C\C=C\C=C\C=C\C=C\2)C[C@H](O)[C@H]3C(O)=O)[C@@H](O)[C@@H](N)[C@@H]1O
InChI   1S/C47H73NO17/c1-27-17-15-13-11-9-7-5-6-8-10-12-14-16-18-34(64-46-44(58)41(48)43(57)30(4)63-46)24-38-40(45(59)60)37(54)26-47(61,65-38)25-33(51)22-36(53)35(52)20-19-31(49)21-32(50)23-39(55)62-29(3)28(2)42(27)56/h5-18,27-38,40-44,46,49-54,56-58,61H,19-26,48H2,1-4H3,(H,59,60)/b6-5+,9-7+,10-8+,13-11+,14-12+,17-15+,18-16+/t27-,28-,29-,30+,31+,32+,33-,34-,35+,36+,37-,38-,40+,41-,42+,43+,44-,46-,47+/m0/s1


General description

Chemical structure: polyene


1, 5 g in glass bottle

250 mg in glass bottle


Amphotericin B is a polyene antifungal antibiotic from Streptomyce sp. It has a high affinity for sterols, especially ergosterols, of both fungal and bacterial cell membranes. Normal usage in maintenance of antifungal cell cultures is 2.5 mg/L with penicillin and streptomycin used in the medium.

Biochem/physiol Actions

Amphotericin B binds to sterols, forming pores in the membrane, and causing small molecules to leak out. The product is most effective against fungi and yeast.


Amphotericin B remains active for 3 days in culture at 37°C. At -20°C, and with protection from air and light, the product remains active for 5 years.

Preparation Note

Amphotericin B is insoluble in water at pH 6 to 7, but soluble in water at pH 2 or 11. It is soluble in DMSO (30-40 mg/mL) and in dimethylformamide (2-4 mg/mL). Aqueous solutions cannot be sterile filtered due to poor solubility.

Other Notes

Keep container tightly closed in a dry and well-ventilated place. Product is sensitive to light and moisture.

Safety & Documentation

Safety Information

Personal Protective Equipment 
NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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Certificate of Origin (COO)

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