; 1-methylpyrrolidin-2-one (CAS No. 872–50–4) and polyoxyalkylene polystyryl phenyl ether (CAS No. 99734–09–5) (provided for in subheading 3808.92.15) Free No change No change On or before 12/31/2024 . 4579. Prothioconazole, Fluopyram, and Trifloxystrobin fungicides Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.23.90 Product mixtures containing 2-[2-(1-chlorocyclopropyl)-3-(2-chlorophenyl)-2-hydroxypropyl]-1H-1,2,4-triazole-3-thione (Prothioconazole) (CAS No. 178928–70–6), N-[2-[3-chloro-5-(trifluoromethyl) pyridin-2-yl]ethyl]-2-(trifluoromethyl)benzamide (Fluopyram) (CAS No. 658066–35–4) and (2E)-2-methoxyimino-2-[2-[[(E)-1-[3-(trifluoromethyl)phenyl] ethylideneamino]oxymethyl] phenyl]acetate (Trifloxystrobin) (CAS No. 141517–21–7) (provided for in subheading 3808.92.15) Free No change No change On or before 12/31/2024 . 4580. Prothioconazole, Metalaxyl, and Tebuconazole fungicides Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.23.91 Product mixtures containing 2-[(2RS)-2-(1-chlorocyclopropyl)-3-(2-chlorophenyl)-2-hydroxypropyl]-2H-1,2,4-triazole-3(4H)-thione (Prothioconazole) (CAS No. 178928–70–6), methyl N-(2-methoxyacetyl)-N-(2,6-xylyl)-DL-alaninate (Metalaxyl) (CAS No. 57837–19–1) and (RS)-1-p-chlorophenyl-4,4-dimethyl-3-(1H-1,2,4-triazol-1-ylmethyl) pentan-3-ol (Tebuconazole) (CAS No. 107534–96–3) (provided for in subheading 3808.92.15) Free No change No change On or before 12/31/2024 . 4581. Mancozeb and Chlorothalonil formulations Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.23.92 Formulations of zinc;manganese(2+)