A stability-indicating HPLC method for estimation of doxylamine succinate in tablets and characterization of its major alkaline stress degradation product

Future Journal of Pharmaceutical Sciences

Table 1 Results of Cochran’s C test

Concentration (ng/band)	S. D.*	Square of S. D.	Sum of the square of S. D.	C^a
10	20.22	409
20	97.15	9439
40	91.69	8408	1490	0.498
50	17.07	2996

S. D. standard deviation of three replications, C^a Cochran’s C value. *Average of three determinations