 Functional group is an amine, therefore suffix = amine
 There are two amines, so insert the multiplier di
 The longest continuous chain is C2 therefore root = eth
 Locants for NH units are 1 and 2
1,2ethyldiamine
or
ethyl1,2diamine

H_{2}NCH_{2}CH_{2}NH_{2} 

 Functional group is an amine, therefore suffix = amine
 There are two amines, so insert the multiplier di
 The longest continuous chain is C3 therefore root = prop
 Locants for NH units are 1 and 3
 There is a C1 substituent = methyl
 The methyl group is located on the amine, so
locant = N
Nmethyl1,3propyldiamine
or
Nmethylpropyl1,3diamine

H_{2}NCH_{2}CH_{2}CH_{2}NHCH_{3} 

 Functional group is an amine, therefore suffix = amine
 There are two amines, so insert the multiplier di
 The longest continuous chain is C2 therefore root = eth
 Locants for NH units are 1 and 2
 There is are three C1 substituents = trimethyl
 The methyl groups are located different amines,
so locants = N, N
and N'
N,N,N'trimethyl1,2ethyldiamine
or
N,N,N'trimethylethyl1,2diamine

(CH_{3})_{2}NCH_{2}CH_{2}NHCH_{3} 
