Table 2 TLC system suitability testing parameters for the determination of nirmatrelvir and ritonavir.

From: Simultaneous green TLC determination of nirmatrelvir and ritonavir in the pharmaceutical dosage form and spiked human plasma

Parameters

Obtained value

Reference value23

Nirmatrelvir

Ritonavir

Retardation factor (Rf)

0.14

0.41

–

Retention factor (K′)

9.00

1.70

1–10

Tailing factor (T)

1.50

1.10

 > 2

Resolution (Rs)

4.13

 < 2

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