Patent · US Active

Method for preparing a rifaximin product

US9273063B2 · kind B2 · utility

0Cited by

1References

20Claims

0Family size

Assignee

Salix Pharmaceuticals, Inc. · US

Inventors

Emilio Vecchio · Cernusco sul Naviglio, IT
Roberta Pizzocaro · Pioltello, IT

Key dates

Filing date	Apr 24, 2014
Grant date	Mar 1, 2016
Priority date	—
Expiry date	Apr 24, 2034

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D498/22
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process is described which enables Rifaximin in a completely amorphous form to be obtained. Said process comprises the steps of dissolving crude Rifaximin in absolute ethanol while hot and then collecting after precipitation by—cooling the title compound under amorphous form.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.