New crystalline form of the sodium salt of 3-pyridyl-1-hydroxyehtylidene-1,1-bisphosphonic acid
申请人:Richter Jindrich
公开号:US20060148762A1
公开(公告)日:2006-07-06
The present invention relates to a crystalline, hydrated form of the sodium salt of 3-pyridyl-1-hydroxyethylidene-1,1-bisphosphonic acid. The hydrate contains from 6.4 up to 22 weight % of sodium and 15 up to 23 weight % of crystalline water if the sodium content is lower than 7.5 weight %, based on the whole molecule, or 4.5 up to 18 weight % of crystalline water if the sodium content is equal to or higher than 13 weight %, based on the anhydrous substance. Due to stability in humid environments, the hydrate is useful as an active substance for the treatment of diseases associated with bone resorption disorders.
本发明涉及 3-
吡啶基-1-羟基亚乙基-1,1-
二膦酸钠盐的结晶
水合物。以整个分子为基准,如果
钠含量低于 7.5 重量百分比,则
水合物含有 6.4 至 22 重量百分比的
钠和 15 至 23 重量百分比的结晶
水;如果
钠含量等于或高于 13 重量百分比,则以无
水物质为基准,
水合物含有 4.5 至 18 重量百分比的结晶
水。由于在
潮湿环境中的稳定性,
水合物可用作治疗骨吸收障碍相关疾病的活性物质。