Question

Parkinson's disease is linked to abnormalities in the levels of dopamine in the body. The structure of dopamine is

• A. A
• B. B
• C. C
• D. D

Hint:

Dopamine is a catecholamine: it has a catechol ring (\(2\) adjacent OH groups) and an ethylamine side chain \((-CH_2CH_2NH_2)\).

Answer 1

The Correct Option is C

Step 1: Recall dopamine structure.
Dopamine is 3,4-dihydroxyphenethylamine.
It contains:
- Benzene ring
- Two adjacent \(-OH\) groups (catechol)
- \(CH_2-CH_2-NH_2\) side chain
Step 2: Match with given structures.
Option (c) shows:
- Catechol ring (\(-OH\) at 3 and 4 positions)
- \(CH_2CH_2NH_2\) substituent
So it matches dopamine exactly.
Final Answer:
\[ \boxed{\text{Option (C)}} \]