Brand

The found absorbance

Theorical concentration (µg/ml)

Found concentration (µg/ml)

Drug concentration (% CV, n = 3)

P1

0.628

7.5

7.55

100.70 ± 0.31

P2

0.627

7.5

7.54

100.52 ± 0.25

P3

0.547

7.5

7.49

99.90 ± 0.46

P4

0.549

7.5

7.5

100.00 ± 0.11

P5

0.700

7.5

7.54

100.52 ± 0.29