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

Table 2

Predicted concentrations of dipyrone 500 mg/mL in water and in the reference commercial pharmaceutical preparation using the PCR model and the relative errors used to calculate the selectivity.

Sample	Predicted concentration of dipyrone diluted in water (mg/mL)	Predicted concentration of dipyrone in the reference commercial pharmaceutical preparation (mg/mL)	Relative error (%)
1	511	505	1.2%
2	497	485	2.4%
3	509	492	3.3%