(R)-2-((4-Aminophenethyl)amino)-1-phenylethanol is a chiral amino alcohol derivative. It features a phenylethanolamine core structure with a 4-aminophenethyl substituent on the amino group. This specific (R)-enantiomer is a key synthetic intermediate in pharmaceutical research and development. Its primary and most significant application is in the synthesis of cardiovascular drugs, specifically as a crucial chiral building block for the production of Nebivolol. Nebivolol is a third-generation, highly selective β1-adrenergic receptor blocker used to treat hypertension and heart failure. The (R)-configuration of this intermediate is essential for imparting the desired pharmacological activity to the final API. The compound's structure, containing both amino and hydroxyl functional groups, makes it a versatile handle for further chemical modifications. Its synthesis and availability are of particular importance in the development of enantiomerically pure active pharmaceutical ingredients (APIs) within the cardiovascular therapeutic area.