Linagliptin EP Impurity E is used as a pharmaceutical reference standard for the identification and quantification of impurity E during the quality control method validation and stability testing of linagliptin drug substances and finished pharmaceutical products.

The purpose of Linagliptin EP Impurity E is to ensure that the level of impurity E in linagliptin complies with the limits specified by the European Pharmacopoeia thereby supporting the safety quality and regulatory compliance of the medicine.

Linagliptin EP Impurity E is a specified organic impurity of linagliptin supplied as a certified European Pharmacopoeia reference standard and is commonly used in analytical techniques such as high-performance liquid chromatography (HPLC) for impurity profiling and pharmaceutical quality control.