© E.V. Blackburn, 2003
Nomenclature
In the IUPAC system, the -NH2 group is called the amino group.  The prefix “amino” (or “methylamino”, “diethylamino” etc.) is therefore used in naming complex molecules.
H2NCH2CH2CH2CO2H
4-aminobutanoic acid
-aminobutyric acid
H2NCH2CH2OH
2-aminoethanol
ethanolamine
2-methylaminoheptane