| 发明名称 | Polymorphic form of rifaximin and process for its preparation | ||
| 摘要 | The present invention discloses a stable amorphous form of Rifaximin characterized by having X-ray powder diffraction pattern as given in FIG. 1, having a 2θ peaks at 7.2 and having moisture content in the range of 3% to 4% preferably, 3.4% to 3.7%. This invention also discloses a novel process for its preparation. | ||
| 申请公布号 | US8759513(B2) | 申请公布日期 | 2014.06.24 |
| 申请号 | US201114003612 | 申请日期 | 2011.08.24 |
| 申请人 | Sequent Scientific Limited | 发明人 | Venkatramana Sumangala;Madathil Vijesh Alanthatta;Vasudeva Pejala Kakrannaya;Arulmoli Thangavel |
| 分类号 | C07D498/22 | 主分类号 | C07D498/22 |
| 代理机构 | Kramer Amado, P.C. | 代理人 | Kramer Amado, P.C. |
| 主权项 | 1. Amorphous rifaximin characterised by having: substantially the same X-ray powder diffraction pattern as given in FIG. 1 and having a 2θ peak at 7.2; and a moisture content is in the range of 2.75% to 4%. | ||
| 地址 | Bangalore IN | ||