Citalopram Hydrobromide - Impurity B (Oxalate Salt)

3-Hydroxy Citalopram Oxalate; Citalopram Hydrobromide Impurity B (Oxalate Salt) (EP/BP); 1-[3-(Dimethylamino)
propyl]-1-(4-fluorophenyl)-1,3-dihydro-3-hydroxy-5-isobenzofurancarbonitrile Oxalate; 1-(3-Dimethylaminopropyl)-1-(4-fluorophenyl)-3-hydroxy-1,3-dihydroisobenzofuran-5-carbonitrile oxalate; Citalopram Related Compound B (USP);