alpha-isomethyl ionone

Alpha-isomethyl ionone (CAS 127-51-5), also known as α-cetone and listed under FEMA 2714, is a synthetic musk-violet fragrance ingredient used across cosmetic and industrial scent applications. It delivers a soft, powdery, woody-violet character that perfumers rely on as a fixative and blending base in finished fragrance compositions. In personal care, it is incorporated into fine fragrances and body lotions.

The compound is also used in shampoos and soaps to provide lasting floral-woody depth and improve scent longevity on skin. Coatings and printing ink formulators use it to mask solvent odors effectively. It imparts a residual pleasant scent to finished products in various industrial sectors. Adhesive and sealant manufacturers add it to consumer-facing formulations where odor neutralization is required.

Fragrance retention through cure is a key benefit in these technical applications. As a FEMA 2714-listed flavoring agent, it also sees limited use in flavor systems where violet or orris-type notes are specified. Alpha-isomethyl ionone is supplied as a clear to pale yellow liquid. It is available in fragrance-grade and flavor-grade specifications, with the latter conforming to FEMA and FCC standards.

Bulk supply is standard in drums and IBCs, with smaller packaging available for laboratory and formulation sampling. This versatile ingredient remains a staple for scent profile stabilization and enhancement.