Wiktionary
bufuralol
n. A potent beta-adrenoceptor antagonist with partial agonist activity.
Wikipedia
Bufuralol
Bufuralol is a potent beta-adrenoceptor antagonist with partial agonist activity. It is metabolized by CYP2D6.
Mostly all of the beta-blockers are aryloxypropanolamine based. In this rare exception, the benzofuran oxygen is part of a ring instead of derived from the epichlorohydrin precursor. iN this way , it could be considered a surrogate.