;fluoride;trihydrate) (CAS No. 87749–50–6) (60:40) (provided for in subheading 2923.90.01) Free No change No change On or before 12/31/2025 . 11171. Betaine Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.20.75 Betaine (2-(trimethylazaniumyl)acetate) (CAS No. 107–43–7) (provided for in subheading 2923.90.01) Free No change No change On or before 12/31/2025 . 11172. Prolonium chloride in aqueous solution Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.20.76 Aqueous solution of [2-hydroxy-3-(trimethylazaniumyl)propyl]-trimethylazanium