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ketone
This is actually an organic chemistry question, but it is a Methyl Ketone.
From its structure, we can see that vanillin does not have a ketone functional group, but it has an aldehyde. It also has a phenol and ether functional group. For that reason, I wouldn't categorize is as just an aldehyde.
Carbonyl
Aldehyde
Carbonyl
Ketone
carbonyl group
The main functional groups in sugar and other carbohydrates is the carbonyl group and the hydroxyl group. The carbonyl group is composed of the aldehyde and ketone groups.
They have the same functional group.
ketone