Linagliptin EP Impurity G is used as a pharmaceutical reference standard for impurity profiling analytical method development and quality control during the manufacture of linagliptin.

Its purpose is to identify quantify and monitor this specific impurity in linagliptin drug substances and drug products to ensure they comply with pharmacopeial and regulatory quality standards.

Linagliptin EP Impurity G is a specified related substance listed in the European Pharmacopoeia (EP) for linagliptin and is used as a certified reference impurity in pharmaceutical analysis rather than as an active pharmaceutical ingredient.