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
[{'content': 'Which of the following is NOT an amide - \nSelect and explain. \nA. Lignocaine, B. Procaine, C. Mepivacaine, D. Dibucaine', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Procaine Local Anaesthetics|||AmidesEstersLidocaineBupivacaineDibucaine (cinchocain)PrilocaineRopivacaineCocaineProcaineChloroprocaineTetracaine (Amethocain)BenzocaineAdvantages of amides over esters:o Produces more intense and longer lasting anaesthesiao Cause less hypersensitivity reactionso Produce longer lasting anaesthesia as they are not hydrolysed by esterasesRemembero Amide LAs bind to a1 acid glycoprotein, while ester LAs do not bind to plasma protein.o Ester LAs can antagonize the action of sulfonamide due to PABA residue.", 'role': 'assistant'}]