Ingredients · Leather & smoke · dry-down

Isobutyl quinoline

Say iteye-soh-BYOO-til KWIN-uh-leen

Bitter burnt leather, green-earthy and rooty, with a green-fruit nuance.

What it is

A molecule made in a lab.

When you smell it

Dry-down: what stays.

What perfumers do with it

The classic leather chemical; gives chypres and masculine leathers their dry, bitter hide note.

Worth knowing

Its discovery inspired de Laire's Mousse de Saxe base, the leathery heart of Caron's Nuit de Noël.

Known in

Nuit de Noël (Caron, 1922)

Also called

IBQ; 6-isobutylquinoline