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

Table 3

Evaluation of intraday and interday precision and accuracy.

Method	RTB taken; (μg mL^−1)	Intraday (𝑛=5)			Interday (𝑛=5)
		RTB found^a (μg mL^−1)	%RSD^b	%RE^c	RTB found^a(μg mL^−1)	%RSD^b	%RE^c
Method A	70.0	69.2	1.2	1.1	70.3	1.4	0.4
	140.0	142.2	1.0	1.6	142.3	1.1	1.7
	210.0	212.5	0.6	1.2	212.6	1.0	1.3
Method B	20.0	20.1	0.5	0.7	20.3	0. 9	1.6
	40.0	39.9	1.7	0.4	40.2	1.4	0.6
	60.0	60.8	1.1	1.4	61.0	1.5	1.6

^aMean value of five determinations; ^bRelative standard deviation (%); ^cRelative error (%).