Brefonalol is a vasodilating beta-adrenoceptor blocking agent. References: Halabi A, Endell W, Halabi I, Kirch W. Hemodynamic effects of brefanolol and propranolol assessed by noninvasive methods in patients with arterial hypertension. J Cardiovasc Pharmacol. 1990 Jul;16(1):81-6. PubMed PMID: 1696669.

纯度：≥98%

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