Cryst. polymorphous forms of the rifaximin (INN) antibiotic named rifaximin  and rifaximin  useful in the prodn. of medicinal prepns. contg. rifaximin for oral and topical use and obtained by means of a crystn. process carried out by hot-dissolving the raw rifaximin in Et alc. and by causing the crystn. of the product by addn. of water at a determinate temp. 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.
Viscomi Guiseppe Claudio, Campana Manuela, Confortini Donatella, Barbanti Maria Miriam, Braga Dario (2006). New polymorphous forms of rifaximin, processes for their production and use thereof in the medicinal preparations..
New polymorphous forms of rifaximin, processes for their production and use thereof in the medicinal preparations.
BRAGA, DARIO
2006
Abstract
Cryst. polymorphous forms of the rifaximin (INN) antibiotic named rifaximin and rifaximin useful in the prodn. of medicinal prepns. contg. rifaximin for oral and topical use and obtained by means of a crystn. process carried out by hot-dissolving the raw rifaximin in Et alc. and by causing the crystn. of the product by addn. of water at a determinate temp. 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.