Number of compounds among the following which contain sulphur as heteroatom is .

Furan, Thiophene, Pyridine, Pyrrole, Cysteine, Tyrosine

Question

Number of compounds among the following which contain sulphur as heteroatom is .

Furan, Thiophene, Pyridine, Pyrrole, Cysteine, Tyrosine

Canvas Classes · Accepted Answer

Heteroatoms in Organic Compounds:
A heteroatom is any atom other than carbon or hydrogen in an organic compound. Common heteroatoms include O, N, S, P, halogens, etc.

Analysis of each compound:

1. Furan: Five-membered aromatic ring with oxygen as heteroatom
   - Formula: 
   - Heteroatom: O ❌ (not sulphur)

2. Thiophene: Five-membered aromatic ring with sulphur as heteroatom
   - Formula: 
   - Heteroatom: S ✅

3. Pyridine: Six-membered aromatic ring with nitrogen as heteroatom
   - Formula:

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