Question

Ethylbutyrate is responsible for the odor of pineapple. Which one of the following is the structure of ethyl butyrate? 

 

• A. A
• B. B
• C. C
• D. D

Hint:

For esters, remember: alcohol gives the alkyl prefix, and acid gives the “-oate” suffix (e.g., ethyl butyrate = ethanol + butanoic acid).

Answer 1

The Correct Option is C

Step 1: Identify functional group.
Ethyl butyrate is an ester formed from butanoic acid (butyric acid) and ethanol.
Ester structure: R–COO–R′
Step 2: Combine acid and alcohol parts.
Butyric acid provides the butanoate (CH$_3$CH$_2$CH$_2$CO–) part.
Ethanol contributes the ethyl (–CH$_2$CH$_3$) group.
Step 3: Write structure.
Final structure = CH$_3$CH$_2$CH$_2$COOCH$_2$CH$_3$.
Step 4: Conclusion.
Hence, option (C) represents ethyl butyrate.