IN2014CH02021AIN2021CH2014AIN2014CH02021AIN 2014CH02021 AIN2014CH02021 AIN 2014CH02021AIN 2021CH2014 AIN2021CH2014 AIN 2021CH2014AIN 2014CH02021 AIN2014CH02021 AIN 2014CH02021A
Authority
IN
India
Prior art keywords
rifaximin
preparation
improved processes
rifamycin
novel polymorph
Prior art date
Application number
Inventor
Venkata Naga Kali Vara Prasada Raju Vetukuri
Ambaiah Boini
Krishna Prasad Chigurupati
Original Assignee
Granules India Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Granules India LtdfiledCriticalGranules India Ltd
Priority to CA2946101ApriorityCriticalpatent/CA2946101A1/en
Priority to IN2021CH2014prioritypatent/IN2014CH02021A/en
Priority to EP15780496.4Aprioritypatent/EP3134415A4/en
Priority to PCT/IB2015/052854prioritypatent/WO2015159275A2/en
Priority to US15/304,740prioritypatent/US9765088B2/en
Publication of IN2014CH02021ApublicationCriticalpatent/IN2014CH02021A/en
Improved processes for the preparation of Rifaximin. Particularly, improved processes for the preparation of Rifaximin from Rifamycin O and S. More particularly a novel polymorph of Rifaximin and process for its preparation are provided.