2922.49.49.50 - Other

This HTS category, 2922.49.49.50, encompasses a broad range of "Other" amino acids. It is a residual classification intended for amino acids that do not fall under more specific subheadings within the broader category of amino acids, other than those containing more than one kind of oxygen function, and their esters; salts thereof. This includes a vast array of naturally occurring and synthetic amino acids not specifically enumerated elsewhere in the tariff schedule.

Distinguishing this category from its siblings, such as Alanine (2922.49.49.10) and l-Aspartic acid (2922.49.49.15), is crucial. Those sibling categories are reserved for precisely identified amino acids. HTS 2922.49.49.50, in contrast, serves as a catch-all for all other amino acids that do not have a dedicated HTS code at this level. Classification into this subheading relies on the chemical identity of the amino acid and the absence of a more specific classification.

As this is a leaf node, there are no further subcategories under 2922.49.49.50. Therefore, classification within this subheading is final. Importers and customs brokers should exhaust all possibilities of classifying the amino acid under more specific subheadings before resorting to this residual classification. Documentation confirming the chemical structure and purity of the amino acid is often required to support its classification.