Methyl(nitroso){3-phenyl-3-[4-(trifluoromethyl)phenoxy]propyl}amine

This compound is a nitrosamine derivative used as a reference standard for the detection and quantification of nitrosamine impurities in fluoxetine active pharmaceutical ingredients. It is structurally characterized by a nitrosamine functional group attached to a phenylpropyl chain bearing a trifluoromethylphenoxy substituent.