VISCOMI GIUSEPPE CLAUDIO,CAMPANA MANUELA,CONFORTINI DONATELLA,BARBANTI MARIA MIRIAM,BRAGA DARIO
申请号：
HK07103565.2
公开号：
HK1096396B
申请日:
2007.04.03
申请国别(地区):
HK
年份:
2012
代理人:
摘要：
Crystalline polymorphous forms of the rifaximin (INN) antibiotic named rifaximin ´ and rifaximin µ useful in the production of medicinal preparations containing rifaximin for oral and topical use and obtained by means of a crystallization process carried out by hot-dissolving the raw rifaximin in ethyl alcohol and by causing the crystallization of the product by addition of water at a determinate temperature and for a determinate period of time, followed by a drying carried out under controlled conditions until reaching a settled water content in the end product, are the object of the invention.
