Guanfacine Hydrochloride Guanfacine HCl CAS 29110-48-3 API USP Standard High Purity

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Guanfacine hydrochloride centrally acting a-adrenoceptor agonist. Antihypertensive. Guanfacine hydrochloride, an anti-hypertensive agent, is a selective α2A-adrenoceptor agonist with Kd of 31 nM and displays 60-fold selectivity over α2B-adrenoceptors. Guanfacine lowers both systolic and diastolic blood pressure by activating the central nervous system α2A norepinephrine autoreceptors, which results in reduced peripheral sympathetic outflow and thus a reduction in peripheral sympathetic tone. The therapeutic applications for guanfacine are similar to those of the other centrally acting α2-adrenergic agonists and methyldopa. It has been effective as monotherapy in the treatment of patients with mild to moderate hypertension.