Quantitative determination of cyanoacetic acid content in teriflunomide drug substance by ion chromatography using conductivity detector

Future Journal of Pharmaceutical Sciences

Table 2 Statistical data of linearity

Sample ID (%Level)	Concentration (μg/mL)	Area [(μS/cm × min]	Statistical analysis
LOQ level	0.101	0.0373	Slope	0.396
25% level	0.126	0.0506	Intercept	− 0.001
50% level	0.252	0.1004	Intercept	− 0.001
75% level	0.377	0.1483	STEYX	0.002
100% level	0.503	0.197	STEYX	0.002
125% level	0.629	0.2478	Correlation coefficient	0.9998
150% level	0.755	0.3000	Correlation coefficient	0.9998