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Table 5 Back-calculated concentrations of bexarotene for calibration curve standards

From: Development and validation of bexarote by bioanalytical methods using liquid chromatography-tandem mass spectroscopy (LC-MS/MS)

Standard ID A B C D E F G H Slope Intercept r2
Actual concentration (ng/mL) 1.044 2.7760 10.096 25.240 59.390 131.97 263.950 351.93    
PA–01 1.019 2.9590 9.9554 25.592 56.512 134.04 255.361 359.85 0.013 − 0.0002 0.998
PA–02 1.052 2.7224 9.9902 25.479 57.677 132.92 272.270 352.68 0.013 0.0011 0.999
Mean 1.0362 2.8407 9.9728 25.535 57.095 133.48 263.81 356.27    
SD 0.02319 0.167301 0.024607 0.079974 0.823921 0.787929 11.956327 5.072289    
%CV 2.24 5.89 0.25 0.31 1.44 0.59 4.53 1.42    
%Nominal 99.25 102.33 98.78 101.17 96.14 101.14 99.95 101.23