Escitalopram oxalate: co-existence of oxalate dianions and oxalic acid molecules in the same crystal.
Harrison WT, Yathirajan HS, Bindya S, Anilkumar HG. Escitalopram oxalate: co-existence of oxalate dianions and oxalic acid molecules in the same crystal. Acta Crystallogr C. 2007 Feb; 63(Pt 2):o129-31.