2-Mercaptopropionic Acid from China
2-Mercaptopropionic acid is an alpha-thiol carboxylic acid used in pharmaceutical intermediates and metal chelation applications. Classified under HTS 2930.90.49 as an other organo-sulfur acid with the characteristic S-C bond structure defined in heading 2930.
Duty Rate — China → United States
41.7%
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
• Submit NMR or GC-MS spectra verifying molecular structure to distinguish from sulfonated derivatives excluded from heading 2930
• Declare pharmaceutical end-use if applicable; requires FDA registration and may need prior notice via ACE system