Essential Biochemistry - Vitamins (Section 1 - No. 3)
What is the structure of Biotin?
A monocyclic ring
A bicyclic ring
A tricyclic ring
A tetracyclic ring
Explanation
Biotin is an isocyclic derivative (Figure 7.1). It consists of a tetrahydro-thiophene ring fused to an imidazole ring and a valeric acid side chain.
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