- Source: Oct-1-en-3-one
3/info/oct" target="_blank">Oct-3/info/1" target="_blank">1-3/info/en" target="_blank">en-3-one (CH2=CHC(=O)(CH2)4CH3), also known as 3/info/1" target="_blank">1-octen-3-one or amyl vinyl ketone, is the odorant that is responsible for the typical "metallic" smell of metals and blood coming into contact with skin. 3/info/oct" target="_blank">Oct-3/info/1" target="_blank">1-3/info/en" target="_blank">en-3-one has a strong metallic mushroom-like odor with an odor detection threshold of 0.03–3/info/1" target="_blank">1.12 μg/m3 and it is the main compound responsible for the "smell of metal", followed by decanal (smell: orange skin, flowery) and nonanal (smell: tallowy, fruity). 3/info/oct" target="_blank">Oct-3/info/1" target="_blank">1-3/info/en" target="_blank">en-3-one is the degradative reduction product of the chemical reaction of skin lipid peroxides and Fe2+. Skin lipid peroxides are formed from skin lipid by oxidation, either enzymatically by lipoxygenases or by air oxygen. 3/info/oct" target="_blank">Oct-3/info/1" target="_blank">1-3/info/en" target="_blank">en-3-one is a ketone analog of the alkene 3/info/1" target="_blank">1-octene.
Natural occurrences
It is also produced by Uncinula necator, a fungus that causes powdery mildew of grape.
See also
Odorant
3/info/1" target="_blank">1-Octen-3-ol, the alcohol analog that is used by mosquitoes as an odor cue
References
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