Fundamentals of NMR Spectroscopy Justin L Lorieau Fundamentals of NMR Spectroscopy Chapter 1. INEPT and Signal Enhancement 1.1. Theory 1.1.1. Methine, Amide and the AX Spin Systems Chapter 2. Refocused INEPT, Delayed Decoupling and In-Phase Spectra 2.1. Theory 2.1.1. Methine, Amide and the AX Spin System 2.1.2. Cosine and Sine Modulation 2.1.3. Methylene, Methyl, AX2 and AX3 Spin Systems