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Table 11 Recovery studies of n-acetyl l-cysteine

From: Development and validation of a stability indicating green analytical method for the simultaneous estimation of l-glutathione, n-acetyl l-cysteine and Vitamin C in marketed formulation using UV–visible spectroscopy

Level (%)

Conc. (µg/mL)

Conc. before spiking (µg/mL)

Conc. of std added (µg/mL)

Conc. after spiking (µg/mL)

% Recovery

Mean

±SD

%RSD

80

10

10.20

8

18.09

98.62

99.08

1.51

1.52

 

10

10.22

8

18.02

97.50

   
 

10

9.98

8

18.07

101.12

   

100

10

10.18

10

20.02

98.40

99.06

0.57

0.57

 

10

10.02

10

20.00

99.80

   
 

10

10.24

10

20.14

99.00

   

120

10

10.05

12

22.26

101.75

100.49

0.98

0.98

 

10

10.10

12

22.02

99.33

   
 

10

10.09

12

22.14

100.41