Word root : It indicates the parent carbon chain, which is the the longest continuous chain of carbon atoms including functional group and multiple bonds( if present). Now see the four parts ( prefix, word root, bond and functional group) separately.ġ. IUPAC name of all compounds contain word root and primary suffix but prefix and secondary suffix may not be present because all organic compounds must contain carbon chain and bond but substituent and functional group may not be present. Thus, general format for IUPAC name of all compounds is: ‘ol’ tells that there is –OH group(alcohol) as functional group. ‘en’ tells that there is at least one carbon to carbon double bond. ‘hex’ tells that there are 6 carbon atoms on parent carbon chain. ‘methyl’ tells that –CH 3 is present as substituent. In the given example “5-methylhex-3-en-2-ol” there are 4 pieces- ‘methyl’, ‘hex’, ‘en’ and ‘ol’. To understand the name you need to take the name to pieces. This is a method of naming the organic compounds as recommended by the international Union of Pure and Applied Chemistry (IUPAC).Įach part of the IUPAC name gives you some useful information about the compound.īefore starting the IUPAC rules, lets see an example of organic compound and it’s IUPAC name. IUPAC Nomenclature of organic compounds containing more than one functional groups ( polyfunctional compounds) :.IUPAC Nomenclature of organic compounds containing one functional group ( monofunctional compounds):.IUPAC Nomenclature of organic compounds containing multiple bonds(double/triple bond) too.

IUPAC Nomenclature of organic compounds containing carbon to carbon single bonds and substituents only :.General steps for IUPAC nomenclature of organic compounds:.

Amino acid iupac nomenclature