Methyl 4,4,4-Trifluoro-3-oxobutanoate from China
Methyl ester of 4,4,4-trifluoro-3-oxobutanoic acid, listed under HTS 2918.30.70.00 as a specific fluorinated keto-ester with carboxylic acid oxygen function and ketone group. Employed in fluorinated building blocks for medicinal chemistry.
Duty Rate — China → United States
37.5%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Verify against listed name exactly; synonyms like methyl trifluoroacetoacetate must reference CAS 348-58-3 for CBP verification
• Ensure no anti-dusting agents render it specific-use per note (g); standard lab packaging maintains chapter 29 status
• For sets with catalysts, classify individually unless integral per general rules; avoid bulk mixtures