Sulphur and oxygen both belong to the sixth main group element together, they can form some similar chemical compounds on structure, Such as thiols (mercaptan), thiophenol and thioether.

• 1995年3月，日本邪教奥姆真理教施放沙林毒气，发生了震惊世界的“东京地铁投毒事件”，造成了大量人员伤亡。