A Stability-Indicating High Performance Liquid Chromatographic Assay for the Simultaneous Determination of Pyridoxine, Ethionamide, and Moxifloxacin in Fixed Dose Combination Tablets

Table 2

Data representing accuracy and precision studies for three consecutive days.

APIs	Pyridoxine					Ethionamide					Moxifloxacin
Actual concentration (𝜇g/mL)	5	7.5	10	12.5	15	50	75	100	125	150	80	120	160	200	240
Measured concentration	5.03	7.49	10.05	12.49	15.10	49.93	74.93	100.31	124.86	150.21	78.54	122.88	159.05	199.33	240.25
St. deviation	0.01	0.02	0.01	0.01	0.01	0.20	0.25	0.39	0.26	0.34	0.27	0.27	0.10	0.11	0.51
Precision (%)	0.24	0.26	0.10	0.07	0.07	0.40	0.34	0.39	0.21	0.23	0.34	0.22	0.06	0.06	0.21
Accuracy (%)	100.64	99.84	100.50	99.92	100.67	99.86	99.91	100.31	99.89	100.14	98.18	102.40	99.40	99.66	100.10
Number of samples	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9