9902.05.90 - 4-Amino-3,5,6-trichloro-2-pyridinecarboxylic acid (CAS No. 1918-02-1)(provided for in subheading 2933.39.25)

This HTS classification, 9902.05.90, pertains to a specific chemical compound: 4-Amino-3,5,6-trichloro-2-pyridinecarboxylic acid, identified by CAS No. 1918-02-1. This compound is often recognized for its role as an active ingredient in herbicides. The "provided for in subheading 2933.39.25" notation indicates its primary classification within the chemical chapter of the HTS, but this Section 99 classification denotes a specific, potentially temporary, import restriction or modification under special provisions.

Given that this is a leaf node, there are no further subcategories to explore. The primary function of this HTS code is to apply specific customs treatments, likely relating to import quotas, duties, or other regulations, to shipments of this particular chemical. It distinguishes itself from sibling categories within Chapter 99 by its precise identification of the chemical substance and its associated CAS number, ensuring targeted application of the special classification provisions. For classification purposes, it is crucial to confirm that the imported substance is indeed 4-Amino-3,5,6-trichloro-2-pyridinecarboxylic acid.