121064-26-4 3,4-Dihydro-1-(4-ethoxy-4-oxobutyl)-2,3,3-trimethyl-isoquinolinium tetrafluoroborate(1-) Isoquinolinium, 3,4-dihydro-1-(4-ethoxy-4-oxobutyl)-2,3,3-trimethyl-, tetrafluoroborate(1-)-