(E)-2-(2-6-(2-Cyanophenoxy)pyrimidin-4-yl)oxy)phenyl)-3-methoxyacrylic acid-d4

(E)-2-(2-6-(2-Cyanophenoxy)pyrimidin-4-yl)oxy)phenyl)-3-methoxyacrylic acid-d4 is deuterium labeled (E)-2-(2-6-(2-Cyanophenoxy)pyrimidin-4-yl)oxy)phenyl)-3-methoxyacrylic acid.