Methane
Ethane
Propane
Butane
Pentane
Hexane
Alkane/Alkyl
Alkene/Alkenyl
Alkyne/Alkynyl
Alcohol/Hydroxyl
Ether/Ether
Aldehyde/Carbonyl
Ketone/Carbonyl
Carboxylic Acid/Carboxyl
Halogenoalkane/Halo(chloro,bromo,iodo)
Amine/Amine
Ester/Ester
Nitrile/Nitrile
amide/carboxamide
Arene/Phenyl