Method Development for Simultaneously Determining Indomethacin and Nicotinamide in New Combination in Oral Dosage Formulations and Co-Amorphous Systems Using Three UV Spectrophotometric Techniques

Table 4

Data of the specificity test of IND for the proposed methods.

Ratio (IND : NCT)	NCT concentration (μg/mL)	IND (15 μg/mL) recovery%
		ZCD2	DWD1	SS
1 : 3	45.0	100.90	100.68	99.09
1 : 2	30.0	100.07	100.30	98.13
1 : 1	15.0	99.65	99.64	99.18
1 : 0.5	7.5	98.61	99.14	98.08
1 : 0.33	5.0	101.53	99.60	98.73
1 : 0.17	2.5	99.24	100.65	100.46
SRF for SS method				0.9994

Mean recovery % of three experiments.