9902.04.91 - 4-(2,2-Dimethylhydrazinyl)-4-oxobutanoic acid (Daminozide) (CAS No. 1596-84-5) (provided for in subheading 2928.00.50)

This HTS category, 9902.04.91, specifically covers 4-(2,2-Dimethylhydrazinyl)-4-oxobutanoic acid, commonly known as Daminozide. This chemical compound is provided for under subheading 2928.00.50 and is subject to temporary legislation and import restrictions. Its inclusion in Chapter 99 signifies that its classification is governed by special provisions related to trade agreements and agricultural adjustments, rather than its inherent chemical properties alone, which would typically place it in Chapter 29.

As a leaf node within the HTS database, 9902.04.91 has no direct subcategories. Its significance lies in its specific treatment under Section XXII of the HTS. While other sibling categories at the top level of the HTS (such as live animals in Chapters 01) represent distinct classes of goods with their own inherent tariff treatments, this category is distinct because it represents a specific chemical with regulatory restrictions imposed through temporary legislation, overriding its standard chemical classification in Chapter 29 for import purposes.

The classification of Daminozide under this HTS code is critical for ensuring compliance with specific import regulations and trade policies. Importers must be aware that while the chemical identity of the product is provided for in subheading 2928.00.50, its import is governed by the special provisions outlined in Chapter 99. This necessitates careful attention to the specific rules and restrictions associated with 9902.04.91, which may include quotas, specific documentation, or prohibitions not applicable to other chemicals classified under more general headings.