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common-names-geneva-system-2
(ii) The name of a complex radical is considered to start with the first letter of its complete name.
Example :
(iii) In cases where names of complex radicals are composed of identical words, preference for citation is given to that radical which contains the lowest locant at the first cited point of difference in the radical.
Example :
If two or more side chains are in equivalent positions the one to be assigned the lower number is that cited first in the name.
Examples :
If LPCC’S of equal length are competing for selection as main chain in a saturated branched acyclic hydrocarbon, then the choice given in following order to number of side chains with Lowest sumrule.
(a) Choose LPCC which follow lowestsum rule.
Example:
(b) Choose LPCC whose side chains have the lowest-numbered locants.
Example:
