2914.23.00.00 - Ionones and methylionones

This HTS category, 2914.23.00.00, specifically covers ionones and methylionones. These are cyclic ketones that are characterized by the presence of a six-membered ring structure with a ketone functional group. Ionones and methylionones are primarily known for their significant use in the fragrance and flavor industries, contributing distinct floral and woody notes to perfumes, cosmetics, and food products. Their classification is dependent on their chemical structure, specifically the position and number of methyl groups attached to the ionone ring system.

Within the broader group of cyclanic, cyclenic, or cycloterpenic ketones without other oxygen function, this category is distinct from its siblings. For instance, 2914.22 covers simpler cyclohexanone and methylcyclohexanone derivatives, which generally lack the characteristic conjugated double bond system found in ionones and methylionones, and therefore possess different olfactory properties. Category 2914.29, "Other," serves as a residual category for cyclanic, cyclenic, or cycloterpenic ketones not otherwise specified, highlighting the specific structural and olfactory significance of ionones and methylionones that warrants their separate classification.

As this is a leaf node within the HTS, there are no further subdivisions under 2914.23.00.00. Classification within this code relies on confirming that the substance is indeed an ionone or methylionone, typically through its chemical name, CAS number, or spectral analysis, and ensuring it does not fall under a more specific or differently functionalized ketone category.