Table 7.

Assay results for the determination of PAR and DAN in synthetic mixtures of their pharmaceutical ratio (12:1) by the suggested HPLC technique

PAR/DAN ratio	Suggested technique						Official USP method [33]
	Concentration taken (µg/mL)		Concentration found (µg/mL)		% Found		% Found
	PAR	DAN	PAR	DAN	PAR	DAN	PAR	DAN
12:1	60.0	5.0	61.008	4.999	101.68	99.98	99.68	101.14
	120.0	10.0	120.084	9.889	100.07	98.89	100.68	100.69
	180.0	15.0	177.966	15.207	98.87	101.38	99.37	98.58
	192.0	16.0	193.018	15.920	100.53	99.50	101.05	99.43
Mean				100.29	99.94	100.20	99.96
± S.D				1.16	1.06	0.69	0.91
t test				0.13	0.03		(2.45)*
F test				2.12	1.21		(9.28)*

N. B. Each result is the average of three separate determinations

^*The figures between parentheses are the tabulated t and F values at P = 0.05 [32]