2912.49 - Other:

This category, HTS Code 2912.49, encompasses aldehyde alcohols, aldehyde-ethers, aldehyde-phenols, and aldehydes possessing other oxygen functional groups, excluding those specifically defined as vanillin or ethylvanillin. These compounds feature a central aldehyde group in conjunction with at least one additional oxygen-containing functional group, such as a hydroxyl, ether, or phenolic group. The key differentiator lies in the nature and position of these additional functional groups, which distinguish them from more specifically enumerated substances.

While sibling categories 2912.41.00.00 (Vanillin) and 2912.42.00.00 (Ethylvanillin) cover specific aromatic aldehydes with well-defined structures and applications, this category 2912.49 serves as a residual classification for all other compounds fitting the broader definition of aldehyde alcohols, ethers, phenols, and related oxygen-functionalized aldehydes. Therefore, its scope is broader and less specialized than its direct counterparts.

Further classification within this category distinguishes between aromatic and non-aromatic (other) compounds. The "Aromatic" subcategory pertains to those where the aldehyde group is attached to an aromatic ring system and is accompanied by other oxygen functions. The "Other" subcategory captures aldehyde alcohols, ethers, phenols, and aldehydes with other oxygen functions that do not possess an aromatic structure, encompassing a diverse range of aliphatic and cycloaliphatic derivatives.