METHOD FOR CRYSTALLIZING AZITHROMYCIN DIHYDRATE

FIELD: antibiotics, chemical technology. ^ SUBSTANCE: crystallization of azithromycin dihydrate is carried out by alkalization of an aqueous-organic azithromycin salt with the ratio water/solvent = from 1:1 to 3;1 and up to pH value 8-10. Methanol, ethanol, isopropanol, acetonitrile or dioxane can b...

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Hauptverfasser:	ZARIPOVA Z.I, PSHENICHNIKOV V.G, RABINOVICH I.M
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	CHEMISTRY DERIVATIVES THEREOF HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE METALLURGY NUCLEIC ACIDS NUCLEOSIDES NUCLEOTIDES ORGANIC CHEMISTRY SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS SUGARS
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Beschreibung
Zusammenfassung:	FIELD: antibiotics, chemical technology. ^ SUBSTANCE: crystallization of azithromycin dihydrate is carried out by alkalization of an aqueous-organic azithromycin salt with the ratio water/solvent = from 1:1 to 3;1 and up to pH value 8-10. Methanol, ethanol, isopropanol, acetonitrile or dioxane can be used as a solvent. Method provides enhancing stability and homogeneity of the end crystalline product. ^ EFFECT: improved crystallizing method. ^ 1 dwg, 3 ex