Aldehyde C-10

Say itAL-dih-hyde see-TEN

Waxy, soapy orange peel with a bright, slightly metallic aldehydic lift.

What it is: A molecule made in a lab.
Where it comes from: occurs in citrus and coriander leaf
When you smell it: Top notes: when you spray it.
What perfumers do with it: Part of the classic aldehyde chord; zests up orange and grapefruit and deepens rose and jasmine.
Worth knowing: First made in 1883, it waited nearly four decades for its star turn in Chanel No. 5.
Known in: Chanel No. 5 (Chanel, 1921)
Also called: Decanal; capric aldehyde

Not on the label of any of the 1080 perfumes read so far.

Sources