Quantification of Rifaximin in Tablets by Spectrophotometric Method Ecofriendly in Ultraviolet Region

Figure 4

Analytical curve of standard rifaximin, at concentrations of 10, 14, 18, 22, 26, and 30 μg mL⁻¹, obtained by the spectrophotometry method in the ultraviolet region in purified water with 20% ethyl alcohol.