Thu November 29, 2012 By: Anupriya

Sir, guide me about how to write IUPAC names of organic compounds having more than 1 functional groups..

Expert Reply
Fri November 30, 2012

Whenever there are more than one functions group, the main functional group is indicated by the 2o suffix in the IUPAC name, whereas the remaining functional groups are considered as substituents and are indicated by the appropriate prefixes.

 E.g. In the following organic compound, 5-hydroxyhexanoic acid,  both -OH and -COOH groups are the functional groups. But the -COOH group has more priority than the -OH group. Hence it is considered as the main functional group and indicated by secondary suffix, "oic acid". Whereas the -OH group is considered as substituent and is indicated by the prefix, "hydroxy".

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