 Functional group is an alcohol, therefore suffix = ol
 Hydrocarbon structure is an alkane therefore ane
 There are two alcohols, so insert the multiplier di
 The longest continuous chain is C2 therefore root = eth
 Locants for OH units are 1 and 2
ethane1,2diol
or
1,2ethanediol

HOCH_{2}CH_{2}OH 

 Functional group is an alcohol, therefore suffix = ol
 Hydrocarbon structure is an alkane therefore ane
 There are two alcohols, so insert the multiplier di
 The longest continuous chain is C3 therefore root = prop
 Locants for OH units are 1 and 2
propane1,2diol
or
1,2propanediol

CH_{3}CH(OH)CH_{2}OH


 Functional group is an alcohol, therefore suffix = ol
 Hydrocarbon structure is an alkane therefore ane
 There are two alcohols, so insert the multiplier di
 The longest continuous chain is C4 therefore root = but
 Locants for OH units are 1 and 4
butane1,4diol
or
1,4butanediol

HOCH_{2}CH_{2}CH_{2}CH_{2}OH 

 Functional group is an alcohol, therefore suffix = ol
 Hydrocarbon structure is an alkane therefore ane
 There are two alcohols, so insert the multiplier di
 The ring is C6 therefore root = cyclohex
 Locants for OH units are 1 and 2
cyclohexane1,2diol
or
1,2cyclohexanediol


