Figure 5From: Validated spectrophotometric methods for determination of Alendronate sodium in tablets through nucleophilic aromatic substitution reactionsEffect of the volume of reagent on the absorbance of the reactions products: ■ ALD (15 μg/mL) with NBD-Cl, ▲ ALD (40 μg/mL) with DNFB (method II), ● ALD (15 μg/mL) with DNFB (method III).Back to article page