BMC Chemistry

Table 7 Assay results for determination of DRT, CAFF and PAR in pure forms in the derivative method

From: Smart green spectrophotometric assay of the ternary mixture of drotaverine, caffeine and paracetamol in their pharmaceutical dosage form

Proposed method										Comparison method (79)
Parameter	DRT			CAFF			PAR			DRT		CAFF		PAR
Parameter	Amount taken µg/mL	Amount found µg/mL	% found^b	Amount taken µg/mL	Amount found µg/mL	% found^b	Amount Taken µg/mL	Amount Found µg/mL	% found^b	Amount taken µg/mL	% found^b	Amount Taken µg/mL	% found^b	Amount taken µg/mL	% found^b
	2	2.013	100.65	1.5	1.494	99.60	5	5.085	101.7	6.00	100.65	6.00	98.97	15.00	98.93
	4	3.940	98.50	3	3.040	101.33	10	10.127	101.27	8.00	98.60	8.00	98.29	20.00	101.90
	6	5.988	99.80	6	6.051	100.85	15	15.152	101.01	10.00	100.52	10.00	101.17	30.00	100.93
	8	7.921	99.01	9	8.919	99.10	20	20.168	100.84
	10	9.966	99.66	12	11.871	98.93	30	30.189	100.63
	14	14.166	101.19	15	15.125	100.83	40	40.704	101.76
Mean			99.73			100.11			100.51
± SD	0.93			1.02			1.08
t^a	0.66 (2.36)			0.75 (2.36)			0.09 (2.36)
F^a	1.12 (5.76)			2.84 (5.76)			1.39 (5.76)

^aThe figures between parenthesis are the tabulated t and F values, respectively are at P = 0.05 [81]
^bEach result was the average of three separate determinations

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