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1H-NMR (A) and Fourier transform infrared spectra (B) for DSPE-PEG2000-GE11 and high-pressure liquid chromatographic curves for DSPE-PEG2000-Mal (C-a), free GE11 (C-b), DTT (C-c), the reaction mixture (C-d), and the reaction mixture treated with DTT (C-e).
Abbreviations: DSPE, 1,2-distearoyl-sn-glycero-3-phosphoethanolamine; PEG, polyethylene glycol; DTT, DL-dithiothreitol; DMSO, dimethyl sulfoxide.
