Research Article

Validation and Uncertainty Estimation of an Ecofriendly and Stability-Indicating HPLC Method for Determination of Diltiazem in Pharmaceutical Preparations

Figure 4

Typical spectrums of (a) diltiazem working standard solution and after degradation under (b) heat condition; (c) acidic hydrolysis; (d) basic hydrolysis; (e) oxidative condition; (f) photolytic condition.
353814.fig.004a
(a)
353814.fig.004b
(b)
353814.fig.004c
(c)
353814.fig.004d
(d)
353814.fig.004e
(e)
353814.fig.004f
(f)