SEARCH Articles Figures Tables HMBC HMBC/GHMBC heteronuclear shift correlation Heteronuclear Correlation HMBC Heteronuclear Multiple-Bond Correlation, Selective (HMBCS) Heteronuclear multiple bond correlation HMBC) Heteronuclear multiple bond correlation HMBC) spectroscopy Long-Range Heteronuclear Chemical Shift Correlation - HMBC Naphthoquinones HMBC correlations Understanding the Heteronuclear Multiple-Bond Correlation (HMBC) Pulse Sequence