Aldehyde C-13

Say itAL-dih-hyde SEE-thur-TEEN

Mild, waxy, soapy aldehyde with a faint citrus-peel and fatty note.

What it is: A molecule made in a lab.
When you smell it: Heart: the first hours.
What perfumers do with it: Softer, longer-lasting aldehyde that carries the waxy aldehydic effect into the heart.
Also called: Tridecanal; tridecyl aldehyde

Not on the label of any of the 232 perfumes read so far.