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Q.
Which is the correct structure of compound $6$-bromo-$5$-
chloro-$5$-ethoxycarbonyl-$2$-methyl heptanoic acid?
Organic Chemistry – Some Basic Principles and Techniques
Solution:
The correct numbering of given compound is as follows: $COOH$ is here the functional group of highest priorty.
Ethoxy carbonyl is prefix for the ester locant.
Carbon of ester group is not considered in parent chain as it would give a parent chain of six carbons only.