Number of compounds among the following which contain sulphur as heteroatom is . Furan, Thiophene, Pyridine, Pyrrole, Cysteine, Tyrosine
Answer
2
Solution
Heteroatom present: Furan – O; Pyridine – N; Pyrrole – N; Tyrosine – N, O (no S)
Thiophene [figure] – S in the ring ✓
Cysteine (HS–CH2–CH(NH2)–COOH) – S in –SH ✓
Answer: 2