Pemigatinib Pyiridine Impurity

Chemical Name: 3-(2,6-Difluoro-3,5-dimethoxyphenyl)-1-ethyl-8-(morpholinomethyl)-7-(phenylsulfonyl)-1,3,4,7-tetrahydro-2H-pyrrolo[3',2':5,6]pyrido[4,3-d]pyrimidin-2-one

Smile: O=S(N1C2=C(C=C1CN3CCOCC3)C(N4CC)=C(C=N2)CN(C5=C(C(OC)=CC(OC)=C5F)F)C4=O)(C6=CC=CC=C6)=O