英文名称:Nebivolol Impurity B (Sr,Ss); R 74714; 2H-1-Benzopyran-2-Methanol, Α,Α'-[Iminobis(Methylene)]Bis[6-Fluoro-3,4-Dihydro-, (Αr,Α'S,2S,2'S)-; (S)-1-((S)-6-Fluorochroman-2-Yl)-2-(((R)-2-((S)-6-Fluorochroman-2-Yl)-2-Hydroxyethyl)Amino)Ethanol; Nebivolol Impurity B