Figure 2. Raw ESI mass spectra of the discrete m-dPEG®24-NHS ester (top; (M+NH4)+1 of 1231.6975 m/z and (M+2NH4)+2 of 624.8662 m/z) and mPEG 1K- NHS (SC) (bottom; average MW: 1000) analyzed in positive ion mode.
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Figure 2. Raw ESI mass spectra of the discrete m-dPEG®24-NHS ester (top; (M+NH4)+1 of 1231.6975 m/z and (M+2NH4)+2 of 624.8662 m/z) and mPEG 1K- NHS (SC) (bottom; average MW: 1000) analyzed in positive ion mode.
