Journal Article Estradiol Research Support, Non-U.S. Gov't 3XMK78S47O 4TI98Z838E PSYCHE Testosterone homodecoupling 1H-1H J-couplings 63937KV33D COSY Erythromycin TOCSY band selective band-selective excitation band-selective refocusing broadband broadband homodecoupling complex mixtures complex organic molecules direct dimension homonuclear broadband decoupling in-phase magnetization pure-shift NMR real-time pure shift NMR real-time pure-shift ROESY spin-echo modulation structure elucidation