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(Science: chemical) (2-(4-acetoxy-2-isopropyl-5-methylphenoxy)ethyl)dimethylamine. An alpha-adrenergic blocking agent that is used in raynaud's disease. It is also used locally in the eye to reverse the mydriasis caused by phenylephrine and other sympathomimetic agents.

Pharmacological action: adrenergic alpha-antagonists, miotics, sympatholytics, vasodilator agents.

Chemical name: Phenol, 4-(2-(dimethylamino)ethoxy)-2-methyl-5-(1-methylethyl)-, acetate (ester)