Figure 2From: Validated spectrophotometric methods for determination of Alendronate sodium in tablets through nucleophilic aromatic substitution reactionsAbsorption spectra of the reactions products: (a) ALD (20 μg/mL) with NBD-Cl(Method I), (b) ALD (20 μg/mL) with DNFB (Method II), (c) ALD (18 μg/mL) with DNFB (Method III).Back to article page