p-methylbenzaldehyde, also known as p-tolualdehyde, has a benzene ring with a methyl group (-CH3) and an aldehyde group (-CHO) as substituents. The 'p-' prefix indicates that these substituents are para to each other, meaning they are positioned opposite each other on the benzene ring.
The structure can be represented as follows:
CHO
|
CH3-C6H4
Alternatively, a more detailed structural formula can be shown:
CHO
|
/ \
/ \
/ \
6 2
/\ /\
5 1 -C- 3
\/ \/
4 CH3
Where the numbers indicate the positions of the atoms on the benzene ring.