Can anyone please let me know why I am getting an addition of 44 mass in the final mass spectra of VVVV(Tetrapeptide Valine) after micro cleavage?

Hi All, My final aim is to synthesize Hexapeptide VVVVVV(Valine-6). This is the third time I am synthesizing, but I am not getting my target product checked by Mass Spectroscopy. I micro cleaved...

14 January 2022 2,974 0 View