acid (CAS No. 917389–32–3) (provided for in subheading 2933.59.36) Free No change No change On or before 12/31/2020 . 532. Benzo[h]quinazolin-4(3H)-one derivative (MK-7622) Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.06.39 3-[(1S,2S)-2-Hydroxycyclohexyl]-6-[(6-methyl-3-pyridinyl)methyl]benzo[h]quinazolin-4(3H)-one (CAS No.1227923–29–6) (provided for in subheading 2933.59.53) Free No change No change On or before 12/31/2020 . 533. Pyrifluquinazon Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.06.40 1-Acetyl-1,2,3,4-tetrahydro-3-[(3-pyridylmethyl)amino]-6-[1,2,2,2-tetrafluoro-1-(trifluoromethyl) ethyl] quinazolin-2-one (Pyrifluquinazon) (CAS No. 337458–27–2) (provided for in subheading 2933.59.70) Free No change No change On or before 12/31/2020 . 534. DEDS Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.06.41 2,2'-Disulfanediylbis(5-ethoxy-7-fluoro[1,2,4]triazolo[1,5-c]pyrimidine) (CAS No. 166524–75–0) (provided for in subheading 2933.59.70) 0.8% No change No change On or before 12/31/2020 . 535. Phenyl(4,6-dimethoxy-pyrimidin-2-yl)carbamate Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.06.42 Phenyl(4,6-dimethoxy-2-pyrimidinyl)carbamate (CAS No. 89392–03–0) (provided for in subheading 2933.59.70) Free No change No change On or before 12/31/2020 . 536. MethylIodouracil Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.06.43 1-[2-Fluoro-6-(trifluoromethyl)benzyl]-5-iodo-6-methyl-2,4(1H,3H)-pyrimidinedione (CAS No. 1150560–54–5) (provided for in subheading 2933.59.70) Free No change No change On or before 12/31/2020 . 537. Pyrimisulfan Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.06.44