Isobutyl Quinoline — a dark, leathery, and earthy note with dry green nuances. Its scent combines damp moss, tanned leather, and herbal bitterness, giving a vintage and powerful aura. This note adds strength, structure, and sophistication to a fragrance. Isobutyl Quinoline is often used in base notes, providing a smoky, mossy-leathery depth that evokes classic perfumery and timeless elegance.