(2R)-4-benzyl-2-[(1R)-1-[3,5-bis(trifluoromethyl)phenyl]ethoxy]morpholin-3-one

This compound is a pharmaceutical intermediate used in the synthesis of NK1 receptor antagonists such as aprepitant. It features a complex stereochemically defined structure with aromatic rings, ether linkages, and halogen substituents, making it a key building block in manufacturing processes.