![]() ![]() The prefix may be added immediately before the root word or before the infix. Prefix- The prefix is used to indicate the side chains, substituents and low priority functional groups (which are considered as substituents). The suffixes as well as prefixes used for some important functional groups are shown in the following table in the decreasing order of their priority.ģ. ![]() (ii) Secondary Suffix: It is used to indicate the main functional group in the organic compound and is added immediately after the 1° suffix. It is added immediately after the root word. (i) Primary Suffix : It is used to indicate the degree of saturation or unsaturation in the main chain. Suffix : It is again divided into two types: The root words used for different length of carbon chain (upto 10) are shown below : Number of carbon atoms in the parent chainĢ. Root Word : It indicates the number of carbon atoms in the longest possible continuous carbon chain also known as parent chain chosen by a set of rules. Prefix + Infix + Root word + 1° suffix + 2° suffixġ. ![]() The complete systematic IUPAC name can be represented as : The systematic IUPAC name of an organic compound consists of four parts. (c) The most exhaustive rules for nomenclature were first published in 1979 and later revised and updated in 1993. (b) This system of nomenclature was first introduced in 1947 and was modified from time to time. (a) The full form of IUPAC system is International Union of Pure and Applied Chemistry. ![]()
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