9902.05.63 - Ethyl 2-chloro-5-(4-chloro-5-difluoromethoxy-1-methyl-1H-pyra- zol-3-yl)-4-fluorophenoxyacetate (Pyraflufen-ethyl) (CAS. No 129630-19-9) (provided for in subheading 2933.19.23)

This HTS category, 9902.05.63, specifically covers the compound known as Pyraflufen-ethyl, identified by CAS Number 129630-19-9. This substance is a technical-grade pesticide ingredient, used in agricultural applications. Its precise chemical composition, Ethyl 2-chloro-5-(4-chloro-5-difluoromethoxy-1-methyl-1H-pyrazol-3-yl)-4-fluorophenoxyacetate, dictates its classification under this specific provision.

Distinguishing this entry from its siblings within Chapter 99 is crucial. While Chapter 99 generally pertains to temporary legislation and special trade provisions, 9902.05.63 represents a specific, temporary modification or restriction related to the importation of this particular pesticide intermediate. Other entries in Chapter 99 might cover different temporary tariff treatments, quotas, or specific import limitations for various goods, but this code is exclusively for Pyraflufen-ethyl.

As this is a leaf node within the HTS structure, there are no further subcategories. Classification is directly determined by the presence and identity of Pyraflufen-ethyl as described. For customs purposes, importers must ensure that the goods precisely match the chemical name, CAS number, and the provided description to be correctly classified under this heading, and to comply with any associated temporary import provisions or reporting requirements.