Figure 8

(Ι-ΙV) Typical chromatograms showing the decrease in peak area ratios of EBS- Zn (ΙΙ) complex by alkaline degradation at different time intervals where: a) Solvent front b) Zn (ΙΙ) 0.0025% c) Cetirizine hydrochloride internal standard (15 μg/ml). d) Ebastine- Zn (ΙΙ) complex