Amphotericin X1 

Amphotericin X1 is an 13-O-methyl derivative of Amphotericin B with good antifungal activity. Amphotericin X1 inhibits Candida albicans 33/079, C.parapsilosis 937A, Cryptococcus neoformans 451, Aspergillus niger 57A and A.fumigatus with MIC values of 1 μg/mL, 8 μg/mL, 1 μg/mL, 2 μg/mL and 2 μg/mL, respectively^[1].

MIC: 1 μg/mL (Candida albicans 33/079), 8 μg/mL (C.parapsilosis 937A), 1 μg/mL (Cryptococcus neoformans 451), 2 μg/mL (Aspergillus niger 57A) and 2 μg/mL (A.fumigatus)^[1]

Amphotericin X1 (compound 4) shows interesting antifungal activity combined with a pronounced reduction in haemolytic activity (EH₅₀ of 42 μg/mL) against mammalianerythrocytes in vitro^[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

938.11

C₄₈H₇₅NO₁₇

136135-57-4

CO[C@](C[C@@H]1O)(C[C@H](C[C@H]([C@@H](CC[C@H](C[C@H](CC(O[C@H]([C@@H]([C@@H]2O)C)C)=O)O)O)O)O)O)O[C@](C[C@H](/C=C/C=C/C=C/C=C/C=C/C=C/C=C/[C@@H]2C)O[C@@](O[C@@H]3C)([H])[C@H]([C@H]([C@@H]3O)N)O)([H])[C@@H]1C(O)=O

Room temperature in continental US; may vary elsewhere.

Please store the product under the recommended conditions in the Certificate of Analysis.

• [1]. Taylor AW, et al. Synthesis and antifungal selectivity of new derivatives of amphotericin B modified at the C-13 position. J Antibiot (Tokyo). 1993 Mar;46(3):486-93.  [Content Brief]