Which of the following water-soluble vitamins structurally features both a pyrimidine ring and a sul — Biomolecules Chemistry Question
Question
Which of the following water-soluble vitamins structurally features both a pyrimidine ring and a sulphur-containing thiazole ring, and whose deficiency primarily causes Beri-beri?
Answer: B
💡 Solution & Explanation
Vitamin $B_1$ (Thiamine) has the molecular formula $C_{12}H_{18}N_4OSCl_2$. Structurally, it is unique among the B-complex vitamins because it contains both a pyrimidine ring and a sulphur-containing thiazole ring. Its deficiency leads to Beri-beri.
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