caixingke
第6楼2007/12/26
impurity C: not more than twice the area of the corresponding peak in the chromatogram obtained with reference solution (a) (0.5 per cent ); if the area of the peak due to impurity C in the chromatogram obtained with the test solution is greater than the area of the corresponding peak in the chromatogram obtained with reference solution (a ) (0.25 per cent ), dilute the test solution to obtain an area equal to or smaller than the area of the peak in the chromatogram obtained with reference solution (a); calculate the content of impurity C taking into account the dilution factor