3β-(p-Fluorobenzoyloxy)tropane, (8-Methyl-8-azabicyclo[3.2.1]oct-3-yl 4-fluorobenzoic acid ester, 4-fluorotropacocaine, 3-Pseudotropyl-4-fluorobenzoate, 3-pseudotropyl-4-fluorobenzoate, pFBT) is a tropane derivative drug which acts as a local anaesthetic, having around 30% the stimulant potency of cocaine but around the same potency as a local anaesthetic.

[citation needed] It has been investigated as a potential radiolabelled agent for studying receptor binding,[1] but was not adopted for this application.

The main application for fluorotropacocaine, however, has been as a designer drug analogue of cocaine, first detected by the EMCDDA in 2008,[2][3] and subsequently sold as an ingredient of various "bath salt" powder products, usually mixed in combination with other stimulant drugs such as caffeine, dimethocaine, desoxypipradrol or substituted cathinone derivatives.

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