Table 2 The CCD data with input variables and output responsesa,b.

From: AQbD based green UPLC method to determine mycophenolate mofetil impurities and Identification of degradation products by QToF LCMS

Run

Factor 1

Factor 2

Factor 3

Factor 4

Response 1

Response 2

Response 3

Response 4

Response 5

A: pH of the Buffer

B: Initial Gradient (% MP-A)

C: Flow Rate (mL/min)

D: Column Temperature (°C)

R1

R2

R3

R4

R5

1

4.3

65

0.6

30

5.8

5.1

2.2

1.2

3.9

2

4.0

80

0.4

40

8.1

4.0

4.2

1.3

7.1

3

4.0

65

0.5

40

7.5

3.6

3.4

0.0

5.8

4

4.3

80

0.5

40

1.6

7.0

0.0

2.6

0.0

5

4.0

80

0.5

40

6.5

3.4

0.0

4.1

6.7

6

3.7

65

0.4

30

13.8

0.0

3.6

6.5

6.6

7

4.0

95

0.5

40

6.9

3.7

0.0

3.6

6.1

8

4.0

80

0.5

30

9.2

1.4

3.8

2.6

6.1

9

3.7

65

0.4

50

10.5

1.7

4.4

3.0

7.7

10

4.0

80

0.5

50

2.8

6.0

0.0

4.2

3.6

11

3.7

95

0.4

30

13.5

0.0

3.7

7.7

6.7

12

4.3

65

0.4

30

7.3

5.4

0.0

2.7

4.7

13

4.3

95

0.6

30

4.9

5.0

1.7

1.4

3.8

14

3.7

95

0.6

30

10.8

0.0

3.5

4.2

6.5

15

4.3

95

0.4

50

0.0

10.1

0.0

0.0

2.3

16

4.3

95

0.6

50

0.0

5.9

0.0

0.0

2.8

17

4.3

95

0.4

30

8.2

5.6

2.3

0.0

4.9

18

4.3

65

0.4

50

1.5

9.7

0.0

0.0

0.0

19

3.7

95

0.4

50

10.6

1.9

4.5

2.9

7.8

20

3.7

95

0.6

50

7.1

1.2

0.0

3.9

7.3

21

4.0

80

0.6

40

5.8

3.0

3.2

1.1

6.2

22

4.3

65

0.6

50

0.0

0.0

0.0

0.0

3.0

23

3.7

65

0.6

50

8.6

1.4

0.0

0.0

7.5

24

4.0

80

0.5

40

10.1

3.3

0.0

4.1

6.8

25

3.7

65

0.6

30

14.1

0.0

3.4

4.2

6.5

26

3.7

80

0.5

40

15.3

0.0

4.0

3.2

7.3

27

4.0

80

0.5

40

9.9

3.3

0.0

4.1

6.7

  1. aR1: Rs between Imp-E & A; R2: Rs between Imp-D & MPM; R3: Rs between MPM & Imp-F; R4: Rs between Imp-F & B; R5: Rs between Imp-B & C.
  2. bResponse value 0.0 indicates either coelution of the peaks or change in order of elution of the peaks.