This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Local and Regional Anesthesia), Subject name: Anaesthesia
Which of the follow ing is NOT an amide - 
Select and explain. 
A. Lignocaine, B. Procaine, C. Mepivacaine, D. Dibucaine
B: Procaine
Answer: B: Procaine 
Explanation: Ans. is 'b' i.e., Procaine Local AnaestheticsAmidesEstersLidocaineBupivacaineDibucaine (cinchocain)PrilocaineRopivacaineCocaineProcaineChloroprocaineTetracaine (Amethocain)Benzocaine