Table 6: Results from stability of analytical solutions applied to LC analysis of paliperidone in extended-release OROS tablets.

Amount of paliperidonea (%) Time (h) 4°C 25°C 40°C Standard solution Sample solution Standard solution Sample solution Standard solution Sample solution 0 100.11 99.97 100.45 100.07 101.12 100.34 24 100.05 99.88 99.50 99.44 99.94 99.74 48 101.09 99.80 100.78 98.94 100.87 99.03 72 99.15 99.71 98.92 98.51 100.95 99.11

aMean of three amounts, assayed in triplicate. Solutions stored at 30.0 μg mL−1.