Ingredients · Aldehydes · top note

Aldehyde C-11 undecylic

Say itAL-dih-hyde SEE-ih-LEV-un un-dih-SIL-ik

Clean, waxy-soapy aldehyde with bright orange zest and a fresh-laundry feel.

What it is

A molecule made in a lab.

When you smell it

Top notes: the first minutes.

What perfumers do with it

Aldehydic backbone for citrus colognes and soapy-fresh florals; adds radiance without green-rose tones.

Worth knowing

In a 2003 study, undecanal blocked the sperm smell-receptor that bourgeonal switches on.

Also called

Undecanal; undecyl aldehyde