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Table 3 Method precision data

From: Quantification of organic volatile impurities in Oseltamivir phosphate drug substances by head space gas chromatography

No of injections Peak areas
Methanol Ethanol Acetonitrile IPA DCM MTBE Ethyl acetate
1 3069.05 5104.35 430.81 7082.74 710.01 4878.18 5011.39
2 3137.88 5313.08 439.01 7281.68 720.92 4954.33 5122.94
3 2759.24 4859.6 408.87 6716.3 686.26 4839.57 4888.58
4 2796.26 4917.64 412.47 6724.73 685.49 4884.04 4897.69
5 2785.96 4913.64 414.77 6725.74 694.45 4910.43 4912.97
6 2764.73 4867.66 410.66 6519.87 674.61 4893.74 4886.57
Avg 2885.5 4996 419.4 6841.8 695.3 4893.4 4953.4
STDEV 170.754 179.041 12.421 282.17 17.202 37.999 95.407
%RSD 5.9 3.60 3.00 4.10 2.5 0.80 1.90
No of injections Peak areas
THF 1,4-Dioxane DMF Toluene Hexanes
1 712.97 391.13 965.73 913.78 283.1
2 727.4 401.8 1037.48 949.3 287.78
3 700.78 370.48 803.85 863.99 280.08
4 702.69 374.41 836.6 868.76 287.89
5 705.31 372.42 812.12 868.77 289.88
6 702.05 369.11 776.18 859.91 287.38
Avg 708.5 379.9 872 887.4 286
STDEV 10.221 13.394 104.722 36.127 3.665
%RSD 1.4 3.5 12.0 4.1 1.3
  1. Bold values indicate better results than other filtering methods