Linagliptin Methyldimer is used as a pharmaceutical reference standard for the identification quantification and quality control of impurities in Linagliptin active pharmaceutical ingredients (APIs) and finished pharmaceutical products.

The purpose of Linagliptin Methyldimer is to support impurity profiling analytical method validation stability studies and regulatory compliance by enabling the detection and control of dimer-related impurities formed during the manufacture or storage

Linagliptin Methyldimer is a dimeric process-related impurity of Linagliptin that may form during chemical synthesis or degradation and is used as an analytical reference standard in pharmaceutical quality control it is not intended for therapeutic use.