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Table 2 Results of ART and LUM APIs solubility in different media as determined by HPLC

From: Development of a dissolution method for lumefantrine and artemether in immediate release fixed dose artemether/lumefantrine tablets

#

Medium

Solubility (µg/ml)

ART

1

0.5% w/v Myrj 52/HCl (pH 1.2)

151

2

1% w/v Myrj 52/HCl (pH 1.2)

181

3

1% w/v Myrj 52/HCl (pH 2.3)

290

4

1.5% w/v Myrj 52/HCl (pH 2.3)

452

5

2% w/v Myrj 52/HCl (pH 2.3)

652

6

0.5% w/v SLS/HCl (pH 1.2)

323

7

1% w/v SLS/HCl (pH 1.2)

337

8

0.5% w/v Myrj 52/0.05 M ammonium acetate buffer (pH 4.5)

8

9

1% w/v Myrj 52/0.05 M ammonium acetate buffer (pH 4.5)

33

10

0.5% w/v SLS/0.05 M ammonium acetate buffer (pH 4.5)

138

11

1% w/v SLS/0.05 M ammonium acetate buffer (pH 4.5)

219

12

0.5% w/v Myrj 52/0.05 M sodium phosphate buffer (pH 6.8)

22

13

1% w/v Myrj 52/0.05 M sodium phosphate buffer (pH 6.8)

37

14

0.5% w/v SLS/0.05 sodium phosphate buffer (pH 6.8)

5

15

1% w/v SLS/0.05 M sodium phosphate buffer (pH 6.8)

5

16

0.5% w/v Tween80/0 0.05 M ammonium acetate buffer (pH 4.5)

24

17

1% w/v Tween 80/0.05 M ammonium acetate buffer (pH 4.5)

23

18

0.5% w/v Tween 80/HCl (pH 1.2)

10

19

1% w/v Tween 80/HCl (pH 1.2)

17

LUM

20

1% w/v Myrj 52/HCl (pH 2.3)

626

21

1.5% w/v Myrj 52/HCl (pH 2.3)

813

22

2% w/v Myrj 52/HCl (pH 2.3)

1033

23

1% w/v Tween 80/HCl (pH 1.2)

112

24

1% w/v Benzalkonium chloride/HCl (pH 1.2)

93

25

1% w/v Sodium lauryl sulfate/HCl (pH 1.2)

59