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. Author manuscript; available in PMC: 2012 Jul 1.
Published in final edited form as: Int J Mass Spectrom. 2011 Jul 1;304(2-3):98–104. doi: 10.1016/j.ijms.2010.06.001

TABLE 2.

Comparison of impurities identified via LC-low resolution MS and LC-high resolution MS.

Low res (LTQ-XL) High res (LTQ-FT)
Shortmers Shortmers
n-mer with terminal PS n-mer with terminal PS
depurination product depurination product
n-mer with PO linkage
DMTr 24-mer adduct
Chloral 24-mer adduct
CE adduct
IBU adduct

DMTr: 4,4-dimethoxytrityl; CE: 2-cyanoethyl; IBU: isobutyryl