2914.69.90.00 - Other

This classification, 2914.69.90.00, encompasses quinone compounds that are not specifically listed under the preceding subheadings within the 2914.69 category. It serves as a residual category for quinones possessing other oxygen functional groups, or those that have undergone halogenation, sulfonation, nitration, or nitrosation, but do not fall into more precise tariff lines. The defining characteristic here is the presence of the quinone structure, which is a cyclic dione, combined with other functionalities or modifications.

This category is distinct from its sibling, 2914.69.60.00, which explicitly enumerates 1,4-Dihydroxyanthraquinone and 2-Ethylanthraquinone. Therefore, any quinone derivative falling under the broader quinone classification that is *not* one of these specifically named compounds will be classified here. The key differentiator lies in the absence of the precise chemical structures and common names provided in the sibling entry.

As this is a leaf node, there are no further subcategories. Classification within 2914.69.90.00 is determined by the exclusion of goods from more specific descriptions within the 2914.69 heading. Importers and exporters should ensure that the goods in question are indeed quinones with additional functional groups or modifications, and that they do not match the detailed descriptions of any preceding HTS subheadings for quinones.