Jiangsu Hengrui Pharmaceuticals Co. Ltd. and Shanghai Hengrui Pharmaceutical Co. Ltd. have identified oxyheteroaryl compounds acting as sodium channel protein type 10 subunit α (Nav1.8) blockers. They are reported to be useful for the treatment of pain, urinary incontinence, multiple sclerosis, cough, Charcot-Marie-Tooth disease and arrhythmia.