Number of compounds among the following which contain sulphur as heteroatom is _______Furan,Thiophene, Pyridine, Pyrrole, Cysteine, Tyrosine

To determine the number of compounds in the given list that contain sulfur as a heteroatom, we will analyze each compound individually.

1. Furan: Contains oxygen as a heteroatom, not sulfur.
2. Thiophene: Contains sulfur (S) as a heteroatom.
3. Pyridine: Contains nitrogen (N) as a heteroatom, not sulfur.
4. Pyrrole: Contains nitrogen (N) as a heteroatom, not sulfur.
5. Cysteine: An amino acid that contains sulfur (S) in its side chain.
6. Tyrosine: Contains no sulfur in its structure; it has a hydroxyl group (–OH) instead.

Summary of Findings:

• Compounds containing sulfur:
  • Thiophene
  • Cysteine

Final Answer:

There are 2 compounds among the list that contain sulfur as a heteroatom: Thiophene and Cysteine.