Question:
Nalidixic acid belongs to which heterocyclic nucleus:
Nalidixic acid belongs to which heterocyclic nucleus:
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Nalidixic acid = 1,8-Naphthyridine core.
Updated On: May 15, 2026
- Quinoline-4-one
- Quinoline-6-one
- Naphthyridine derivatives
- Anthracene derivatives
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Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Concept
Nalidixic acid was the first of the synthetic quinolone antibiotics.
Step 2: Meaning
A heterocyclic nucleus is the core ring system of a chemical compound.
Step 3: Analysis
Nalidixic acid specifically contains a 1,8-naphthyridine core (a bicyclic system with nitrogen atoms at positions 1 and 8).
Step 4: Conclusion
It is chemically classified as a naphthyridine derivative. Final Answer: (C)
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