Naming Amines Complex amines with more than one functional group are named by considering the-NH2 as an amino substituent on the parent molecule CO2H NH2 NH2 CH3CH2CHCO2H H2NCH2CH2CCH3 4321 4321 NH2 2-Aminobutanoic acid 2,4-Diaminobenzoic acid 4-Aminobutan-2-one Complex amines with more than one functional group are named by considering the –NH2 as an amino substituent on the parent molecule Naming Amines