Stability-Indicating HPLC Determination of Trandolapril in Bulk Drug and Pharmaceutical Dosage Forms

Figure 4

Typical HPLC chromatogram of trandolapril exposed to (a) oxidative stress, (b) enlarged view of chromatogram a showing contour plot, chromatogram, UV spectra, and peak purity, (c) alkaline stress, and (d) acidic stress condition showing degraded product.

(a)

(b)

(c)

(d)