It is used in pharmaceutical research and development analytical method validation stability studies and quality control testing in accordance with regulatory guidelines.

Its primary purpose is to support pharmaceutical quality control by enabling the identification quantification and monitoring of impurity levels to ensure the safety purity and regulatory compliance of abrocitinib.

Abrocitinib Impurity 13 is a specified process- or degradation-related impurity associated with the manufacture or stability testing of the pharmaceutical drug abrocitinib and is used as an analytical reference standard.