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
Vysvětlení
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.