new heading: 9902.06.27 (2-Methyl-1-oxo-1-prop-2-enoxypropan-2-yl) 2-chloro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)pyrimidin-1-yl]benzoate (Butafenacil) (CAS No. 134605–64–4) (provided for in subheading 2933.59.10) Free No change No change On or before 12/31/2020 . 521. Terbacil Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.06.28 3-tert-Butyl-5-chloro-6-methyluracil (Terbacil) (CAS No. 5902–51–2) (provided for in subheading 2933.59.10) Free No change No change On or before 12/31/2020 . 522. Bispyribac sodium Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.06.29 Sodium 2,6-bis[(4,6-dimethoxypyrimidin-2-yl)oxy]benzoate (Bispyribac-sodium) (CAS No. 125401–92–5) (provided for in subheading 2933.59.10) Free No change No change On or before 12/31/2020 . 523. Azoxystrobin Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.06.30 Methyl (2E)-2-(2-{[6-(2-cyanophenoxy)pyrimidin-4-yl]oxy}phenyl)-3-methoxyacrylate (Azoxystrobin) (CAS No. 131860–33–8) (provided for in subheading 2933.59.15) 6.3% No change No change On or before 12/31/2020 . 524. Cyprodinil technical Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.06.31 4-Cyclopropyl-6- methyl-N-phenyl pyrimidin-2- amine (cyprodinil) (CAS No. 121552–61–2) (provided for in subheading 2933.59.15) Free No change No change On or before 12/31/2020 . 525. Pyrimethanil Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.06.32 N-(4,6-Dimethylpyrimidin-2-yl)aniline (Pyrimethanil) (CAS No. 53112–28–0) (provided for in subheading 2933.59.15) Free No change No change On or before 12/31/2020 . 526. 6-BA Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.06.33 N-Benzyl-3H-purin-6-amine (Benzyladenine) (CAS No.1214–39–7) (provided for in subheading