IUPAC Nomenclature of Alicyclic Compounds

Alicyclic compounds have closed chain cyclic structures, hence their names are derived by putting prefix cyclo before the word root. The suffix ane, ene or yne are written according to the saturation or unsaturation in the ring structure.

cyclo + word root + suffix

If an alkyl substituent is present, it is indicated by the appropriate prefix and its position is indicated by numbering the carbon atoms of the ring in such a way so as to assign the least possible number to the substituent.