; and methyl 3-chloro-5-{[(4,6-dimethoxy-2-pyrimidinyl)carbamoyl]sulfamoyl}-1-methyl-1H -pyrazole-4-carboxylate (Halosulfuron-methyl) (CAS No. 100784–20–1) and application adjuvants (provided for in subheading 3808.93.15). Free No change No change On or before 12/31/2020 . 900. Orthosulfamuron Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.10.12 Mixtures of 1-(4,6-dimethoxypyrimidin-2-yl)-3-[2-dimethylcarbamoyl)phenylsulfamoyl]urea (Orthosulfamuron) (CAS No. 213464–77–8) and application adjuvants (provided for in subheading 3808.93.20) Free No change No change On or before 12/31/2020 . 901. Fipronil Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.10.13 (RS)-5-Amino-1-[2,6-dichloro-4-(trifluoromethyl)phenyl]-4-(trifluoromethysulfinyl)-1H-pyrazole-3-ca rbonitrile (Fipronil) (CAS No. 120068–37–3) (provided for in subheading 3808.93.50) Free No change No change On or before 12/31/2020 . 902. (2-Chloroethyl)trimethyl (cycocel PGR) Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.10.14 (2-Chloroethyl)trimethylammonium chloride (CAS No. 999–81–5) (provided for in subheading 3808.93.50) Free No change No change On or before 12/31/2020 . 903. Avadex microactiv Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.10.15 Mixtures of S-(2,3,3-trichloro-2-propen-1-yl) diisopropylcarbamothioate (Triallate) (CAS No. 2303–17–5) (provided for in subheading 3808.93.50) Free No change No change On or before 12/31/2020 . 904. Buckle Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.10.16 Mixtures of S-(2,3,3-trichloro-2-propen-1-yl) diisopropylcarbamothioate (Triallate) (CAS No. 2303–17–5) and 2,6-dinitro-N,N-dipropyl-4-(trifluoromethyl)aniline (Trifluralin) (CAS No. 1582–09–8) (provided for in subheading 3808.93.50) Free No change No change On or before