Analytes

Retention time (TR) (min)

Capacity factors (K’)

Theoretical plates (N)

Tailing factor (T)

Resolution (R)

Separation factor

CAP

3.3

2.13

3200

1.23

3.4

2.48

HCT

3

2.25

3500

1.23

3.5

2.36

FRS

4

2.36

3200

1.36

3.6

2.59

CAP: captopril ;HCT : hydrochlorothiazide; FRS: furosemide
Table 1: System suitability parameters of the proposed method for captopril, hydrochlorothiazide and furosemide.