Question

Chloroquine contains chlorine at

• A. \2^{nd}\
• B. \4^{th}\
• C. \7^{th}\
• D. \8^{th}\

Hint:

Chloroquine is a 4-aminoquinoline derivative with chlorine at the \7^{th}\ position.

Answer 1

The Correct Option is C

Concept:
Chloroquine is an antimalarial drug. Chemically, it is a 4-aminoquinoline derivative.

Step 1: Understanding chloroquine structure.
Chloroquine contains a quinoline nucleus. The chlorine atom is attached to the quinoline ring.

Step 2: Position of chlorine.
In chloroquine, the chlorine substituent is present at the \7^{th}\ position of the quinoline ring.

Step 3: Importance of structure.
The quinoline ring and its substituents are important for the antimalarial activity of chloroquine.

Step 4: Checking options.
The chlorine is not at the \2^{nd}\, \4^{th}\, or \8^{th}\ position. It is specifically at the \7^{th}\ position.

Step 5: Final answer.
Therefore, chloroquine contains chlorine at the \7^{th}\ position. \[ \boxed{7^{th}} \]