Xylometazoline EP Impurity F

2,​6-​Dimethyl-​4-​tert-​butylphenylacetic Acid is an impurity of Xylometazoline (X749950), a vasoconstrictor involved in signal transduction, also used as a nasal decongestant. May be used in treatments involving ischemic injury due to the the ability to shift energy metabolism from mitochondrial to glycolysis (2).