2271228-51-2

2-(3-(4-(7H-Pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl)-1-(ethylsulfonyl)azetidin-3-yl)acetamide is an impurity of Baricitinib (B118690), which is a JAK1 and JAK2 inhibitor and has been studied as a promising treatment for rheumatoid arthritis.