<prompt> Local anaesthetic with prolonged actionProcaineCocaineLidocaineDibucaine  <response>: Dibucaine is the longest acting local anaestheticChlorprocaine is the shoest acting local anaestheticDecreasing order of duration: Dibucaine Bupivacine Tetracaine RopivacaineEtidocaine Prilocaine lignocaine Mepivacaine Cocaine Procaine ChloprocaineRefer: stoeltings pharmacology and physiology in anaesthetic practice, 5th edition, pg no.290,304 