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Table 9 Assay results for determination of DRT, CAFF and PAR in pure forms in the mean centering method

From: Smart green spectrophotometric assay of the ternary mixture of drotaverine, caffeine and paracetamol in their pharmaceutical dosage form

Proposed method

Comparison method (79)

Parameters

DRT

CAFF

PAR

DRT

CAFF

PAR

Amount taken µg/mL

Amount found µg/mL

%

found b

Amount taken µg/mL

Amount found µg/mL

%

foundb

Amount taken µg/mL

Amount found µg/mL

%

foundb

Amount taken µg/mL

% foundb

Amount taken µg/mL

% foundb

Amount taken µg/mL

% foundb

 

2

2.026

101.3

1.5

1.515

101.00

2

1.996

99.80

6.00

100.65

6.00

98.97

15.00

98.93

4

3.957

98.93

3

3.052

101.73

5

4.989

99.78

8.00

98.60

8.00

98.29

20.00

101.90

6

5.989

9982

4.5

4.480

99.56

10

10.104

101.04

10.00

100.52

10.00

101.17

30.00

100.93

8

7.918

98.98

6

6.017

100.28

20

19.696

98.48

 

10

10.126

101.26

9

8.866

98.51

30

30.327

101.09

20

19.981

99.91

15

15.068

100.45

40

98.867

99.67

Mean

  

100.03

  

100.25

  

99.97

 ± SD

1.05

1.12

0.98

ta

0.14 (2.44)

0.88 (2.44)

0.75 (2.44)

Fa

1.09 (6.94)

1.86 (6.94)

2.40 (5.78)

  1. aThe figures between parenthesis are the tabulated t and F values, respectively are at P = 0.05 [81]
  2. bEach result was the average of three separate determinations