503070-58-4: Vilanterol Trifenatate

It is one of impurity present in Vilanterol, Vilanterol is a selective long-acting beta2-adrenergic agonist, pharmacological effect is attributable to the stimulation of intracellular adenylyl cyclase which catalyzes the conversion of adenosine triphosphate to cyclic-3′,5′-adenosine monophosphate. Increases in cyclic AMP are associated with the relaxation of bronchial smooth muscle and inhibition of the release of hypersensitivity mediators from mast cells in the lungs which is. used in the management of chronic obstructive pulmonary disease including chronic bronchitis.