Fig. 1

Six-point calibration curve for the reference rosuvastatin in methanol at 242.5 nm. \(\hat{y} = {\text{ mx }} + {\text{ c}}\) (where x is the concentration of Rosuvastatin (µg/mL); y is the absorbance for UV spectrophotometric method; m is the slope and c is the intercept and r² is the correlation coefficient