4-((1H-benzo[d]imidazol-2-yl)oxy)-3-methylpicolinic acid (11) is a key related substance of Rabeprazole sodium. In this article, this key related substance is synthesized by using 3-methylpicolinonitrile as a starting material via a five-step processes. By converting 3-methylpicolinonitrile to 4-hydroxy-3-methylpicolinonitrile (13), the preparation of TM becomes practical. This work provides a guarantee for quality standard establishment of Rabeprazole sodium.

中文翻译：

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雷贝拉唑钠的关键相关物质4-（（1 H-苯并[ d ]咪唑-2-基）氧基）-3-甲基吡啶甲酸的合成

4-（（1 H-苯并[ d ]咪唑-2-基）氧基）-3-甲基吡啶甲酸（11）是雷贝拉唑钠的关键相关物质。在本文中，该关键相关物质是使用3-甲基吡啶啉作为起始原料通过五步法合成的。通过将3-甲基吡啶甲基腈转化为4-羟基-3-甲基吡啶甲基腈（13），TM的制备变得可行。这项工作为建立雷贝拉唑钠的质量标准提供了保证。