Number of compounds among the following which contain sulphur as heteroatom is____.Furan,Thiophene, Pyridine, Pyrrole, Cysteine, Tyrosine

To determine the number of compounds that contain sulfur as a heteroatom from the provided list, let's analyze each compound:

1. Furan: Contains oxygen as a heteroatom, no sulfur.
2. Thiophene: Contains sulfur as a heteroatom.
3. Pyridine: Contains nitrogen as a heteroatom, no sulfur.
4. Pyrrole: Contains nitrogen as a heteroatom, no sulfur.
5. Cysteine: Contains sulfur as a heteroatom.
6. Tyrosine: Contains no sulfur as a heteroatom, only oxygen and nitrogen.

Final Answer

The compounds that contain sulfur as a heteroatom are Thiophene and Cysteine. Therefore, the number of compounds containing sulfur as a heteroatom is 2.