9902.04.90 - 2-(N-Ethoxypropanimidoyl)-3-hydroxy-5-mesityl-2-cyclohexen-1-one (tralkoxydim) (CAS No. 87820-88-0) (provided for in subheading 2928.00.50)

This HTS category, 9902.04.90, covers the specific chemical compound 2-(N-Ethoxypropanimidoyl)-3-hydroxy-5-mesityl-2-cyclohexen-1-one, commonly known as tralkoxydim. While its primary classification is under subheading 2928.00.50, its inclusion in Chapter 99 signifies that it is subject to temporary legislation or special provisions. These provisions are often enacted under trade agreements or specific agricultural adjustment acts, potentially imposing temporary restrictions, quotas, or special tariff rates on this particular substance.

This category is distinct from its sibling entries within Chapter 99, which may cover a wide array of other temporary tariff modifications or import restrictions affecting various goods. Unlike the broader classifications in earlier chapters that deal with live animals or agricultural products by their general type, 9902.04.90 is highly specific, focusing on a single, precisely identified chemical compound with its unique CAS number.

As a leaf node within the HTS, this entry has no further subcategories. Therefore, classification into 9902.04.90 relies entirely on the accurate identification of tralkoxydim as the imported article and the confirmation that it falls under the temporary measures stipulated by the provisions referenced within Chapter 99. Importers must consult the full text of the relevant legislation and any accompanying proclamations to understand the exact conditions and requirements applicable to this classification.