38971-12-9 4-Biphenylmethyl-(dl-tropyl-alpha-tropinium)bromide 4-Biphenylmethyl-(tropyl-alpha-tropinium) 8-Azoniabicyclo(3.2.1)octane, 8-((1,1'-biphenyl)-4-ylmethyl)-3-(3-hydroxy-1-oxo-2-phenylpropoxy)-8-methyl-, endo-(+-)- BTTB Xenytropium Xenytroponum p-Biphenylmethyl-(dl-tropyl-alpha-tropinium)bromide