2922.43 - Anthranilic acid and its salts:

This HTS category, 2922.43, specifically covers anthranilic acid and its various salts. Anthranilic acid is an aromatic amine and carboxylic acid derivative, playing a crucial role as an intermediate in the synthesis of various organic compounds, including dyes, perfumes, and pharmaceuticals. Its salts, formed by reacting anthranilic acid with a base, are also included under this heading, reflecting their close chemical relationship and common usage.

Within the broader group of "Amino-acids, other than those containing more than one kind of oxygen function, and their esters; salts thereof," this category distinguishes itself by its specific focus on anthranilic acid and its derivatives, as opposed to other amino acids like Lysine (2922.41) or Glutamic acid (2922.42). It also differs from the category for Tilidine (2922.44), which is a specific analgesic, and the residual "Other" category (2922.49) that encompasses other amino acid-related compounds not elsewhere specified.

The subcategories under 2922.43 further refine the classification based on specific import regulations and the general nature of the product. 2922.43.10.00 is designated for products that meet the criteria outlined in additional U.S. note 3 to section VI, often pertaining to specific trade agreements or preferential treatment. The "Other" subcategory (2922.43.50.00) serves as a residual category for all other anthranilic acid salts and related compounds that do not qualify for the specific provisions of the preceding subcategory.