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Table 3 Linearity and regression values for proposed methods

From: A novel stability-indicating method for determination of a new antidepressant effect of vortioxetine in a pharmaceutical formulation by using RP-HPLC

Method RP-HPLC Derivative spectrophotometry
Wavelength, nm 225.0 237.7 257.2
Working range (μg mL−1) 10.0 -70.0 6.0 -30.0 6.0-30.0
Slope (μg mL−1) 0.1116 0.0018 0.0011
Intercept 0.0770 0.0015 0.0005
Correlation coefficient, R2 0.9998 0.9999 0.9997
LOD (μg mL−1) 0.243 0.9623 0.5746
LOQ (μg mL−1) 0.811 3.2075 1.5486