What is a proper name for the following ester? Identify the functional group? 

CH3CH2CH(CH3)COOC2H5

a. 2-butyl ethyl ester 

b. ethyl 2-pentanoate 

c. ethyl 2-methylbutanoate 

d. methylbutanoic ethyl ester 

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1 Answers

Ethyl 2-methylbutanoate, COO

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