Question

The structure given below represents:

• A. Salvarsan
• B. Penicillin
• C. Prontosil
• D. Sulphapyridine

Hint:

Prontosil is an antibacterial sulfa drug that contains an azo (-N=N-) bond and a sulfonamide (-SO_2NH_2) group.

Answer 1

The Correct Option is C

Step 1: Identifying the Structure - The given structure consists of an azo (-N=N-) bond and a sulfonamide \((-SO_2NH_2)\) functional group, characteristic of Prontosil. - Prontosil was the first synthetic sulfa drug used as an antibacterial agent. 

Step 2: Differentiating Other Compounds - Salvarsan is an arsenic-based antimicrobial drug.
- Penicillin is a beta-lactam antibiotic. 
- Sulphapyridine is another sulfa drug but lacks the azo bond present in Prontosil. 

Step 3: Conclusion Since the given structure matches the molecular structure of Prontosil, option (3) is correct.