(R)-citalopram (R)-citalopram(1+) A 3-[5-cyano-1-(4-fluorophenyl)-1,3-dihydro-2-benzofuran-1-yl]-N,N-dimethylpropan-1-aminium resulting from the protonation of the tertiary amino group of (R)-citalopram. escitalopram(1+) 3-[5-cyano-1-(4-fluorophenyl)-1,3-dihydro-2-benzofuran-1-yl]-N,N-dimethylpropan-1-aminium