9902.09.86 - Product mixtures containing (5-hydroxy-1,3-dimethyl-1H-pyrazol-4-yl)[2-(methylsulfonyl)-4-(trifluoromethyl) phenyl] methanone (Pyrasulfotole) (CAS No. 365400-11-9); 2,4-dibromo-6-cyanophenyl octanoate (Bromoxynil Octanoate) (CAS No. 1689-99-2); 2,6-dibromo-4-cyanophenyl heptanoate (Bromoxynil Heptanoate) (CAS No. 56634-95-8); and diethyl 1-(2,4-dichlorophenyl)-5-methyl-4,5-dihydro-1H-pyrazole-3,5-dicarboxylate (Mefenpyr-diethyl) (CAS No. 135590-91-9) (provided for in subheading 3808.93.15)

This HTS category, 9902.09.86, specifically covers certain product mixtures containing four distinct chemical compounds: Pyrasulfotole, Bromoxynil Octanoate, Bromoxynil Heptanoate, and Mefenpyr-diethyl. These are complex organic chemicals with recognized CAS numbers, indicating their identification within chemical registries. The "provided for in subheading 3808.93.15" note signifies that while these specific mixtures are subject to temporary legislation under Chapter 99, their underlying nature aligns with goods classified as pesticides or pest control products.

Distinguishing this category from its siblings within Chapter 99, which often encompass temporary trade modifications or agricultural adjustments, is its precise focus on these four identified chemical substances when presented as product mixtures. Unlike broader sibling categories that might cover general agricultural imports or tariff rate quotas, 9902.09.86 is highly specific and tied to the chemical composition and intended use as pest control agents.

As this is a leaf node within the HTS structure, there are no further subcategories to introduce. Classification under this provision is definitive for mixtures containing these precise compounds, subject to the temporary measures outlined in the heading. The practical classification criteria are the presence and identification of these specific active ingredients within the imported product mixture.