2922.39.50.00 - Other

This HTS category, "Other," within the subheading for amino-aldehydes, amino-ketones, and amino-quinones, encompasses compounds that contain both an amino group and an aldehyde, ketone, or quinone functional group, and do not possess more than one type of oxygen-containing functional group. Importantly, this classification is reserved for those substances that are not specifically classified under preceding subheadings at this level. This typically includes complex structures or derivatives where the amino and carbonyl functionalities are the primary defining features, and where no other significant oxygen-containing groups (like alcohols, carboxylic acids, or ethers) are present, or if they are present, they are not the dominant characteristic for classification.

This "Other" category is distinguished from its sibling category, "Aromatic," which specifically covers amino-aldehydes, amino-ketones, and amino-quinones where the carbonyl group is directly attached to an aromatic ring structure. Therefore, to fall under this "Other" classification, the compound must either be aliphatic or possess an amino group on an aromatic ring while the aldehyde or ketone functionality is not directly attached to that same aromatic ring, or the structure is otherwise not classifiable as aromatic under the preceding sibling.

As this is a leaf node, there are no further subcategories within this specific HTS code. Classification decisions at this level will hinge on a precise analysis of the molecular structure to confirm the presence of the defining amino-aldehyde, amino-ketone, or amino-quinone moieties and the absence of other oxygen-containing functional groups that would warrant classification elsewhere. This often involves consulting chemical nomenclature and structural diagrams to ensure accurate determination.