2935.90.30.00 - Sulfamethazine

This HTS category, 2935.90.30.00, specifically covers the compound known as Sulfamethazine. Sulfamethazine is a sulfonamide antibiotic widely used in veterinary medicine to treat a variety of bacterial infections in livestock and poultry. Its classification under Chapter 29 highlights its nature as a distinct organic chemical entity, rather than a formulated drug product.

Distinguishing Sulfamethazine from its sibling categories, we observe that other 2935.90 subheadings encompass a range of other sulfonamide drugs and their salts. For instance, 2935.90.32.00 includes salts of Sulfamethazine alongside other specific acetylated sulfonamides, indicating a classification based on the chemical form. Similarly, other sibling categories list different individual sulfonamide drugs or combinations thereof. This particular code is reserved for the free base form of Sulfamethazine.

As this is a leaf node within the HTS structure, there are no further subcategories under 2935.90.30.00. Therefore, classification decisions within this code rely on accurately identifying the imported or exported substance as Sulfamethazine. The scope of this category is strictly limited to this specific sulfonamide compound, excluding any mixtures, preparations, or more complex formulations which would be classified elsewhere.