Patent ID: 6767998
Filing Date: 2004-07-27
Classification: A61K,A61P,C07H

Abstract:
A method for preparing a purified product of at least one of (1) purified erythromycin having a reduced content of erythromycin F and (2) a purified erythromycin derivative having a reduced content of erythromycin F derivative, which comprisesremoving at least one of erythromycin F and erythromycin F derivative from at least one of erythromycin and erythromycin derivative wherein at least one of said erythromycin and said erythromycin derivative is mixed with (i) an organic solvent and (ii) water or an aqueous solution of an inorganic and/or organic material to provide an organic phase and an aqueous phase; and wherein the organic phase yields at least one of (1) said purified erythromycin and (2) said purified erythromycin derivative from which at least one of erythromycin F and erythromycin F derivative has been removed.