2914.50 - Ketone-phenols and ketones with other oxygen function:

This HTS category, 2914.50, encompasses a specific group of organic compounds characterized by the presence of both a ketone group and a phenolic hydroxyl group, or ketones that also possess another oxygen-containing functional group. Unlike simpler ketones classified under other subheadings within 2914, these substances exhibit a more complex chemical structure due to the combination of these functional groups. This dual functionality often imparts unique chemical properties, influencing their reactivity and potential applications.

Category 2914.50 is distinct from its sibling categories, which focus on ketones without additional oxygen functions (e.g., acyclic, cyclanic, aromatic ketones) or those with ketone and aldehyde or alcohol functions (2914.40). The defining feature here is the specific pairing of a ketone with a phenol or another distinct oxygen-containing group, differentiating it from ketones where oxygen is solely part of the carbonyl.

The subcategories within 2914.50 further refine this classification. The "Aromatic" subheading specifically addresses ketone-phenols where the phenolic group is attached to an aromatic ring. The residual subheading, 2914.50.50.00, serves as a catch-all for any ketone-phenol or ketone with another oxygen function that does not fit into the more specific "Aromatic" classification, ensuring comprehensive coverage of these complex organic molecules.