Figure 1From: Spectrophotometric determination of tizanidine and orphenadrine via ion pair complex formation using eosin YAbsorption spectra. (A) Blank eosin Y (4 × 10-3 M) in water (_ _ _). (B) Eosin Y binary complex with tizanidine hydrochloride (5 μg/mL) in water at pH 3.5 (--). (C) Eosin Y binary complex with orphenadrine citrate (5 μg/mL) in water at pH 3.5 (......).Back to article page