1-(4-Fluorophenyl)-1,3-dihydro-1-[3-(methylamino)propyl]-5-isobenzofurancarbonitrile hydrochloride;rac Desmethyl Citalopram Hydrochloride;EsCitalopram EP Impurity D Hcl;Citalopram EP Imp D;Citalopram?USP?Related?Compound?D?HCl;(1RS)-1-(4-fluorophenyl)-1-[3-(methylamino)propyl]-1,3- dihydro-2-benzofuran-5-carbonitrile;Citalopram USP Related Compound D as Hydrochloride;Escitalopram Oxalate EP Impurity D as Hydrochloride