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tiamenidine

n. A chemical compound sharing many of the pharmacological properties of clonidine.

Wikipedia
Tiamenidine

Tiamenidine ( BAN, USAN, INN, also known as thiamenidine, Hoe 440) is a imidazoline compound that shares many of the pharmacological properties of clonidine. It acts as a centrally-acting α1 and α1 adrenergic receptor antagonist (with IC50 4.85μM and 0.0091μM, respectively). In hypertensive volunteers, like clonidine, it significantly increased sinus node recovery time and lowered cardiac output. It was marketed (as tiamenidine hydrochloride) by Sanofi-Aventis under the brand name Sundralen for the management of essential hypertension.