Table 4 System suitability testing parameters of the proposed HPLC method for SAC and VAL in spiked human plasma.

From: A sensitive green HPLC-fluorescence method for simultaneous analysis of sacubitril and valsartan in pure forms, pharmaceutical dosage form and human plasma

Parameters

Obtained value

Reference value [51]

VAL

SAC

IBU

Retention time, min

2.570

3.948

6.461

 

Asymmetry factor

0.866

0.825

0.830

0.8–1.2

Retention factor, k

0.474

1.264

2.704

< 10

Resolution, Rs

9.042

13.911

 

> 1.5

Selectivity, a

2.669

2.140

 

> 1

Number of theoretical plates, N

5175.136

9514.382

16798.450

Increase with efficiency of the separation

Height equivalent theoretical plates, H (cm/plate)

0.0029

0.0016

0.0009

The smaller the value the higher the column efficiency