2933.99.42.00 - Acriflavine; Acriflavine hydrochloride; Carbadox; and Pyrazinamide

This HTS category, 2933.99.42.00, specifically covers certain nitrogen-containing heterocyclic compounds primarily recognized and used for their medicinal properties as anti-infective agents. The listed substances, Acriflavine, Acriflavine hydrochloride, Carbadox, and Pyrazinamide, are distinct chemical entities that fall under this classification due to their established therapeutic applications in combating infections. The classification is rooted in their function as drugs within the broader scope of organic chemicals.

Distinguishing this subcategory from its sibling, 2933.99.46.00, which is designated as "Other," is crucial for accurate classification. While the "Other" category would encompass any remaining anti-infective heterocyclic compounds not explicitly enumerated here, 2933.99.42.00 is reserved for the precise substances listed. This specificity ensures that common anti-infective drugs with specific chemical structures are correctly identified, rather than being broadly categorized.

As this HTS code represents a leaf node, there are no further subcategories. Classification under 2933.99.42.00 therefore hinges on the precise identification of the imported or exported merchandise as one of the four named compounds: Acriflavine, Acriflavine hydrochloride, Carbadox, or Pyrazinamide, and their intended use as anti-infective agents. Documentary evidence, such as certificates of analysis or product literature, may be required to substantiate the identity and intended use of these substances.