Carbonyl
Carbonyl
An aldehyde contains a carbonyl group, which is a carbon atom double-bonded to an oxygen atom.
The functional group of citral is the aldehyde (alkanal) group. It has the structure -CHO
Carbonyl
Carbonyl
The functional groups in vanillin are a hydroxyl group (-OH) and an aldehyde group (-CHO).
Glucose is a type of simple sugar. There are two functional groups in glucose. The functional groups are aldehyde and hydroxyl.
They have the same functional group.
aldehyde
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.
The functional group of biphenyl is aromatic ring, benzene.
Carbonyl