Multivariate Method Based on Raman Spectroscopy for Quantification of Dipyrone in Oral Solutions

Figure 3

Raman spectra of a solution of 500 mg/mL of dipyrone diluted in distilled water (100% dilution) and the reference commercial solution of dipyrone 500 mg/mL. Table 1 presents the labeled peaks in the reference solution that are related to dipyrone and their assignments. Inner plot: metamizole chemical formula {[(1,5-dimethyl-3-oxo-2-phenylpyrazol-4-yl)-methylamino] methanesulfonic acid sodium salt}.