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 following doesn't belong to ester group of local anaesthetics: 
Select and explain. 
A. Chlorprocaine, B. Tetracaine, C. Benzocaine, D. Dibucaine
D: Dibucaine
Answer: D: Dibucaine 
Explanation: Ans: (d) DibucaineRef: KDT 6th ed. / 352* Dibucaine is amide group of local anesthetics.ESTER and AMIDESEster (one Tin name)Amides (2 Tin name)* Cocaine* Benzocaine* Chlorprocaine* Tetracaine* Lignocaine* Bupivacaine* Prilocaine* Dibucaine* EtidocaineRemember: Amide group of LA contain "2 i" in their names.* All LA causes causes vasodilation and hypotension, EXCEPT Cocaine. It causes vasoconstriction and significant rise in BP.