A Stability-Indicating RP-HPLC-UV Method for Determination and Chemical Hydrolysis Study of a Novel Naproxen Prodrug

Table 6

Robustness analysis.

Parameter	Peak areas
	pH	Wavelength
Normal (pH 4.0, 272 nm detection)	576794	576794
Change 1 (pH 3.7, 270 nm detection)	597818	588379
	596622	585239
	598154	602703
Change 2 (pH 4.3, 274 nm detection)	599370	577334
	598128	573709
	596365	576894
% RSD	1.342097	1.738497