Tags: Chemical Compound, Chemical Substance.
Syn-Propanethial-S-oxide syn-Propanethial S-oxide (C3H6OS) a member of a class of organosulfur compounds known as thiocarbonyl S-oxides (formerly sulfines) is a gas that acts as a lachrymatory agent (triggers tearing and stinging on contact with the eyes). The chemical is released from onions Allium cepa as they are sliced.
