Research Article

Utility of p-Chloranilic Acid and 2,3-Dichloro-5,6-dicyano-p-benzoquinone for the Spectrophotometric Determination of Rizatriptan Benzoate

Table 6

Results of recovery study by standard addition method.

Tablets studiedMethod AMethod B
RTB in tablets, μg mL−1Pure RTB added, μg mL−1Total found, μg mL−1Pure RTB recovered , Percent ± SDRTB in
tablets,
μg mL−1
Pure RTB
added,
μg mL−1
Total found,
μg mL−1
Pure RTB recovered ,
Percent ± SD

69.8335.0105.09100.7 ± 1.9820.2210.030.32101.0 ± 1.75
Rizora 1069.8370.0140.55101.0 ± 1.4020.2220.040.78102.8 ± 0.57
69.83105.0176.81101.9 ± 1.0020.2230.050.62101.3 ± 0.51

70.6235.0106.38102.2 ± 1.3220.2010.030.35101.5 ± 0.49
Rizora 570.6270.0142.12102.1 ± 0.8520.2020.040.83103.2 ± 0.87
70.62105.0176.75101.1 ± 1.6920.2030.050.75101.8 ± 0.51

*Mean value of three determinations.