2933.49.15.00 - 8-Methylquinoline and Isoquinoline

This HTS category, 2933.49.15.00, specifically covers 8-Methylquinoline and Isoquinoline. These are heterocyclic organic compounds characterized by the presence of a nitrogen atom within their ring structure. Both quinoline and isoquinoline are fused bicyclic systems, and this heading encompasses their basic, unsubstituted forms, as well as derivatives where the primary modification is the addition of a methyl group at the 8-position of the quinoline ring.

This heading differentiates itself from its siblings by its specific focus on the basic 8-Methylquinoline and Isoquinoline structures. For instance, 2933.49.08.00 deals with chlorinated quinoline derivatives, while 2933.49.10.00 covers Ethoxyquin, a specific ethoxylated dihydroquinoline. Similarly, 2933.49.17.00 pertains to a particular quinoline carboxylate ester with trifluoro substituents. This category is for the more fundamental, often less substituted, core structures of 8-Methylquinoline and Isoquinoline.

As 8-Methylquinoline and Isoquinoline are considered leaf nodes within the HTS classification system, there are no further subcategories under this specific code. Therefore, classification decisions within this heading rely on a precise identification of the chemical compound being imported or exported, confirming it matches the structure of either 8-Methylquinoline or Isoquinoline and is not otherwise specified or more appropriately classified under a more specific sibling code.