A phenothiazine used in the hydrochloride C₂₁H₂₆N₂S₂.HCl as a tranquilizer for relief of anxiety states and in the treatment of schizophrenia.

塞奥瑞德辛；硫氢毗啶(治疗精神分裂和减轻焦虑症状的镇静剂)。