Question

Chlorpromazine contains chlorine at _____ position.

• A. 2nd
• B. 3rd
• C. 4th
• D. 5th

Hint:

2-Chloro in Chlorpromazine is essential for its antipsychotic potency.

Answer 1

The Correct Option is A

Step 1: Concept
Chlorpromazine is a phenothiazine derivative used as an antipsychotic medication.

Step 2: Meaning
Its chemical structure consists of a tricyclic phenothiazine ring with specific substitutions that determine its pharmacological activity.

Step 3: Analysis
The nomenclature and structure of chlorpromazine indicate a chlorine atom substituted on the aromatic ring. In the standard numbering of the phenothiazine nucleus, this chlorine is located at the 2-position.

Step 4: Conclusion
Therefore, the chlorine atom in chlorpromazine is specifically positioned at the 2nd carbon of the ring system.

Final Answer: (A)