Parameters HPTLC HPLC
6:8:2, v/v/v 5:9:2, v/v/v pH =5.5 pH= 5.6
Rf(HPTLC) / tR,min (HPLC) of QTF 1.015 0.97 3.56 3.58
T 0.97 1.04 1.02 1.07
N   4753 4634
Rsb 1.37 1.24 2.00 1.96
aRSD% (n=3).
bResolution of QTF to the nearest compound (DQ).
Table 4: Results a of robustness testing of the proposed chromatographic methods for determination of QTF.