2933.59.22.00 - Nicarbazin; and Trimethoprim

This HTS category, 2933.59.22.00, specifically classifies Nicarbazin and Trimethoprim. These are heterocyclic organic compounds characterized by the presence of a pyrimidine ring in their molecular structure. Nicarbazin is primarily known for its use as a coccidiostat in animal feed, while Trimethoprim is an antibiotic widely used to treat bacterial infections. Both are active pharmaceutical ingredients or precursors with specific therapeutic or prophylactic applications.

Distinguishing this category from its sibling, 2933.59.36.00 (Other), is crucial. While both fall under the broader classification of aromatic or modified aromatic anti-infective agents containing a pyrimidine or piperazine ring, 2933.59.22.00 is reserved for the distinctly identified substances Nicarbazin and Trimethoprim. The "Other" category encompasses all other compounds that meet the general criteria but are not specifically listed here, requiring careful analysis to determine if they are covered by the specific entries or fall into the residual classification.

As this is a leaf node, there are no further subcategories. Classification within 2933.59.22.00 is therefore determined by the identity of the imported or exported chemical as either Nicarbazin or Trimethoprim, based on documentary evidence such as certificates of analysis, product specifications, and other supporting trade documentation.