Mass difference of -60.7?

From: Luc CAMOIN (camoin@cochin.inserm.fr)
Date: Mon Apr 30 2001 - 11:30:11 EDT

Hi

I have a synthetic peptide of 28 AA's. I run different cleavage and then
separation of the resulting fragments on reverse phase HPLC in H2O/CH3CN
gradient including 0.1%TFA. Then the fractions were lyophilized.
When I run the mass spect, I found some fragments showing a doublet at mass
N for the major peaks and N -60.7 for the minor peaks. What could this -60.7
be?

Does anyone have any explanation about this -60.7?

Thanks in advance

Luc CAMOIN

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