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Table 2 Influence of different material ratios

From: Separation of ursodeoxycholic acid by silylation crystallization

Groups

DMF (ml)

Electroreduction product (g)

HMDS (ml)

Recovery (%)

Purity (%)

1

10.0

1.0

1.0

60.4

92.5

2

10.0

1.0

2.0

99.8

99.5

3

10.0

1.0

3.0

87.6

94.6

4

10.0

2.0

1.0

40.3

90.1

5

10.0

2.0

2.0

45.6

91.2

6

10.0

2.0

3.0

50.8

92.8

7

15.0

1.0

1.0

30.2

93.3

8

20.0

1.0

1.0

26.4

90.6

  1. Temperature 60°C; silylation reagent, HMDS.