Rule 1. The name of alicyclic compounds is obtained by prefixing cyclo to the name of the corresponding straight-chain hydrocarbon (alkane, alkene or alkyne).



Rule 2. If one alkyl group is present, the same rules are applied as discussed earlier. For example.




Rule 3. If two or more alkyl groups or other substituent groups are present in the ring, their positions are indicated as 1,2, 3...... etc. While numbering the carbon atoms of the ring, the substituent which comes first in the alphabetical order is given the lowest number provided it does not violate the lowest sum rule. For example,
the order is given the lowest number provided it does not violate the lowest sum rule. For example,



Rule 4. If the ring contains more equal number of carbon atom as the alkyl group attached to it, the compound is named as a derivative of cycloalkane and the alkyl group is treated as the substituent eroup. For example.



Rule 5. If the ring contains less number of carbon atoms as the alkyl group attached to it, the compound is named as a derivative of alkane and the cycloalky! group is taken as the substituent group.




Rule 6. If some functional group is present in the ring, it is named as



Rule 7. If the side chain contains a multiple bond or a functional group, the alicycli ring is treated as the substituent irrespective of the size of the ring. For example, 



Rule 8. If a multiple (double or tiple) bond and some other substituents are present in the ring, the numbering is done in such a way that the multiple bond gets the lowest number. For example. 


Rule 9. If some functional group along with other substituent groups is present in the ring,  it is indicated by some appropriate prefix or suffix and its position is indicated by numbering the carbon atom of the ring in such a way that the functional group gets the lowest number.