9902.06.16 - N,N'-Bis(2,2,6,6-tetramethyl-4-piperidinyl)isophthalamide (CAS No. 42774-15-2) (provided for in subheading 2933.39.61).

This HTS category, 9902.06.16, specifically covers N,N'-Bis(2,2,6,6-tetramethyl-4-piperidinyl)isophthalamide, identified by CAS No. 42774-15-2. This chemical compound is classified under Chapter 99, which is designated for temporary legislation and modifications, including those proclaimed pursuant to trade agreements or additional import restrictions under Section 22 of the Agricultural Adjustment Act. The primary function and specific chemical structure of this compound dictate its placement here, separate from broader chemical categories.

Distinguishing this classification from sibling categories within the HTS is crucial for accurate customs processing. While other HTS codes might cover general chemical compounds or specific chemical families, 9902.06.16 refers to a precisely defined chemical substance with a unique CAS number. This specificity is further highlighted by its parenthetical reference to subheading 2933.39.61, indicating it is a provision for a chemical that would otherwise fall under a more general heading in Chapter 29 (Organic Chemicals) but is subject to special, temporary tariff treatment.

As a leaf node within the HTS database, this category has no further subcategories. Its purpose is to provide a distinct tariff line for the aforementioned chemical under specific temporary legislative or trade agreement provisions. Classification under this code is solely dependent on the importer's confirmation that the imported goods precisely match the chemical identity of N,N'-Bis(2,2,6,6-tetramethyl-4-piperidinyl)isophthalamide and that such imports are subject to the temporary measures indicated by Chapter 99.