1 4 butoxyphenyl 3 1 piperidinyl 1 propanone, 2 1 piperidyl ethyl p butoxyphenyl ketone, 3 piperidino 4 butoxypropiophenone							
	
							
							
								
																	
																	
	
								
																	
							
							
																						
								 Used to provide topical anesthesia of accessible mucous membranes prior to examination, endoscopy or instrumentation, or other procedures involving the esophagus, larynx, mouth, ...