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Etafedrine (INN) or ethylephedrine is a long-acting bronchodilator and has the brand name Nethaprin. It was previously commercially available as both the free base and as the hydrochloride salt from Sanofi-Aventis but is now no longer marketed.

Unlike ephedrine and tyramine, etafedrine does not induce the release of epinephrine or norepinephrine and instead acts as a selective β-adrenergic receptor agonist, thereby mediating its bronchodilator effects.

Although there are four possible stereoisomers of ethylephedrine, the pharmacological agent is the (1R, 2S) form. This isomer may be synthesized by alkylating naturally-occurring ephedrine with ethyl iodide. The hydrochloride may be prepared by passing hydrogen chloride through a solution of ethylephedrine in diethyl ether:



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This page contains text from Wikipedia, the Free Encyclopedia - http://en.wikipedia.org/wiki/Etafedrine

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