9902.05.58 - Reaction mixture of (rel-2R,4R)-tetrahydro-4-methyl-2-(2-methylpropyl)-2H-pyran-4-ol and (rel-2R,4S)-tetrahydro-4-methyl-2-(2-methylpropyl)-2H-pyran-4-ol (CAS No. 63500-71-0) (provided for in subheading 2932.99.90)

This HTS classification, 9902.05.58, specifically covers a reaction mixture containing two stereoisomers of tetrahydro-4-methyl-2-(2-methylpropyl)-2H-pyran-4-ol, identified by CAS No. 63500-71-0. This designation falls under Chapter 99, which pertains to temporary legislation and special provisions, indicating that its importation may be subject to specific restrictions or duties not covered by the standard HTS chapters. The parenthetical reference to subheading 2932.99.90 highlights its chemical nature and the base classification under which it would ordinarily be considered without the temporary provision.

Unlike the preceding HTS categories (0101-0105 and numerous others at the Chapter level), which deal with live animals, agricultural products, and a vast array of manufactured and natural goods, this entry is highly specialized. Its placement within Chapter 99 signifies it is not a standard commodity but rather a product subject to unique import regulations, likely due to trade policy, specific commodity controls, or temporary duty adjustments. The distinction lies in its function as a chemical intermediate or component, with its classification dictated by a temporary measure rather than its primary end-use or material composition alone.

As this is a leaf node within the HTS database, there are no further subcategories to explore. The classification of 9902.05.58 is the final designation for this specific reaction mixture. Therefore, importers must carefully consult the related trade agreements legislation and any proclamations issued under Section 22 of the Agricultural Adjustment Act, as amended, to fully understand the requirements and any applicable duties or restrictions associated with its importation.