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 2-Chloro-N-[(4,6-dimethoxy-2-pyrimidinyl)carbamoyl]imidazo [1,2-a]pyridine-3-sulfonamide (Imazosulfuron) (CAS No. 122548–33–8) (provided for in subheading 2935.90.75) Free No change No change On or before 12/31/2020 . 664. 5-Fluoropicolinamide derivative Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.07.72 N-{3-[(2R)-2-amino-1-(methylsulfamoyl)propan-2-yl]-4-fluorophenyl}-5-fluoropyridine-2-carboxamide (CAS No. 1877329–50–4) (Provided for in subheading 2935.90.75) Free No change No change On or before 12/31/2020 . 665. Oryzalin Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.07.73 3,5-Dinitro-N'4,N'4-dipropylsulfanilamide (Oryzalin) (CAS No. 19044–88–3) (provided for in subheading 2935.90.95) 1.5% No change No change On or before 12/31/2020 . 666. Stevia rebiana Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.07.74 13-[(2-O-β-D-Glucopyranosyl-α-D-glucopyranosyl)oxy]kaur-16-en-18-oic acid β-D-glucopyranosyl ester (Stevioside) (CAS No. 57817–89–7) (provided for in subheading 2938.90.00) 0.6% No change No change On or before 12/31/2020 . 667. Purified steviol glycoside, rebaudioside A Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.07.75 Purified steviol glycoside, rebaudioside A (19-O-ß-glucopyranosyl-13-O-(ß-glucopyranosyl(1-2)-ß-glucopyranosyl(1-3))-ß-glucopyranosyl-13-hydroxykaur-16-en-19-oic acid) (CAS No. 58543–16–1) (provided for in subheading 2938.90.00) Free No change No change On or before 12/31/2020 . 668. Purified steviol glycoside, rebaudioside M Subchapter II of chapter 99 is amended by inserting in numerical sequence the