4-[1-Chloro-2-(methylamino)ethyl]-1,2-benzenediol Hydrochloride is an intermediate used in the synthesis of rac Epinephrine-1-Sulfuronthiate (E589528), which is an impurity of Epinephrine (E588580), an Endogenous catcholamine with combined α-and β-agonist activity. Principal sympathomimetic hormone produced by the adrenal medulla. Bronchodilator; cardiostimulant; mydriatic; antiglaucoma.