Development and Validation of Stability Indicating HPTLC and HPLC Methods for Simultaneous Determination of Telmisartan and Atorvastatin in Their Formulations

Table 5

Stability studies by HPLC and HPTLC methods.

Degradation condition	Number of degradation products	Area of degradation product (%)
HPLC
Acid	2	542, 1241
Base	2	437, 985
Oxidative	1	325
Heat	—	—
Photo	—	—
HPTLC		𝑅𝑓
Acid	2	0.27, 0.45
Base	4	0.42, 0.58, 0.74, 0.80
Oxidative	1	0.20
Heat	—	—
Photo	—	—