5-dihydro-1H-1,2,4-triazol-1-yl) carbonyl]{[2-(trifluoromethoxy)phenyl]sulfonyl}azanide (Flucarbazone-sodium) (CAS No. 181274–17–9) (provided for in subheading 2935.90.75) Free No change No change On or before 12/31/2020 . 658. Pyroxsulam herbicide Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.07.66 N-(5,7-dimethoxy [1,2,4]triazolo [1,5-a]pyrimidin-2-yl)-2-methoxy-4- (trifluoromethyl)-3-pyridinesulfonamide (Pyroxsulam) (CAS No. 422556–08–9) (provided for in subheading 2935.90.75) Free No change No change On or before 12/31/2020 . 659. Methyl 2-(aminosulfonyl) benzoate Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.06.67 Methyl 2- sulfamoylbenzoate (CAS No. 57683–71–3) (provided for in subheading 2935.90.75) Free No change No change On or before 12/31/2020 . 660. Methyl 3-sulfamoylthiophene-2-carboxylate Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.07.68 Methyl 3-sulfamoyl-2-thiophenecarboxylate (CAS No. 59337–93–8) (provided for in subheading 2935.90.75) Free No change No change On or before 12/31/2020 . 661. 3-(Ethylsulfonyl)-2-pyridinesulfonamide Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.07.69 3-(Ethylsulfonyl)-2-pyridinesulfonamide (CAS No. 117671–01–9) (provided for in subheading 2935.90.75) Free No change No change On or before 12/31/2020 . 662. Carbamic acid, N-[[3-[(dimethyl...]-, phenyl ester Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.07.70 Phenyl ((3-((dimethylamino)carbonyl)-2-pyridinyl)sulfonyl) carbamate (CAS No. 112006–94–7) (provided for in subheading 2935.90.75) Free No change No change On or before 12/31/2020 . 663. Imazosulfuron Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.07.71