Nomenclature of Organic Chemistry by IUPAC Approach


Nomenclature of organic chemistry is a method of organic chemical compounds. The international union of pure and applied chemistry (IUPAC) recommended this in chemistry nomenclature. It means that every possible organic compound should have a name. So that an unambiguous structural formula can be created. 

The official recommendations of IUPAC are not always followed in practice. However, they necessary to give an absolute and unambiguous definition to a compound. This nomenclature of organic chemistry is sometimes easier than older names. For example, ethanol is easier than ethyl alcohol. Besides this, they can be easily understood than non-systematic names. 

Nomenclature of Organic Chemistry

Here is the full representation of nomenclature by IUPAC. 


Alkanes are straight-chain with the suffix “-ane.” The prefix depends on the number of carbon atoms in the chain. 


An infixed number is indicating the position of the carbon with a lower number for the double bond. 


Alkynes end with the suffix “-one.” It indicates a triple bond. 

Haloalkanes and Haloarenes

In haloalkanes and haloarenes, halogen functional groups are prefix and take the form of fluoro-, chloro-, etc. 


Alcohols take the suffix “-ol” with an infix numerical bonding position that is propane-1-ol. 


Ether consist of an oxygen atom attached between the two carbon chains. For example, CH3OCH3. 


Aldehydes take the suffix “-al.” If other functional groups are present, the aldehyde carbon should be on the one position. 


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