This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Which one of the following antiplatelet is a prodrug 
Select and explain. 
A. Aspirin, B. Dipyridamole, C. Ticlopidine, D. Abciximab
C: Ticlopidine
Answer: C: Ticlopidine 
Explanation: Ans. is 'c' i.e., Ticlopidine Ticlopidine is a prodrug that requires conversion to the active thiol metabolite by a hepatic cytochrome P450 enzyme.