;dichloride with a concentration of greater than 49 percent and less than 51 percent by weight (CAS No. 55636–09–4) (provided for in subheading 2923.90.01) Free No change No change On or before 12/31/2024 . 4273. N,N-Dimethylacetamide Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.20.77 N,N-Dimethylacetamide (CAS No. 127–19–5) (provided for in subheading 2924.19.11) 2% No change No change On or before 12/31/2024 . 4274. N,N-Dimethylformamide Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.20.78 N,N-Dimethylformamide (CAS No. 68–12–2) (provided for in subheading 2924.19.11) 1.2% No change No change On or before 12/31/2024 . 4275. DAAM Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.20.79 N-(2-Methyl-4-oxo-2-pentanyl)acrylamide (CAS No. 2873–97–4) (provided for in subheading 2924.19.80) Free No change No change On or before 12/31/2024 . 4276. L-Alanyl L-glutamine Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.20.80 L-Alanyl L-glutamine ((2S)-5-amino-2-[[(2S)-2-aminopropanoyl]amino]-5-oxopentanoic acid) (CAS No. 39537–23–0) (provided for in subheading 2924.19.80) Free No change No change On or before 12/31/2024 . 4277. Granular acrylamido-tert-butyl sulfonic acid (ATBS) Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.20.81 Granular 2-methyl-2-(prop-2-enoylamino)propane-1-sulfonic acid (CAS No. 15214–89–8) (provided for in subheading 2924.19.80) 6% No change No change On or before 12/31/2024 . 4278. Glycyl-L-glutamine hydrate Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.20.82 Glycyl-L-glutamine hydrate ((2S)-5-amino-2-[(2-aminoacetyl)amino]-5-oxopentanoic acid