Abstract: 2D INADEQUATE sequence is one of the most important 2D NMR techniques in current use. By the use of 2D INADEQUATE spectra and DEPT, hetero and homonuclear shift-correlated 2D spectra, the peaks of ¹³Cspectrum of δ-V_E have been assigned. The chemical shifts of each proton were evaluated by C-H correlate 2D spectra. Some peaks of ¹³C spectrum of δ-V_E and 2D INADEQUATE spectra were discussed, and the data in literature^[1] should be amended.

Key words: 2D INADEQUATE, δ-Vitamin E, COSY, C-H correlated spectrum