Sodium Phenylbutyrate from China
Sodium phenylbutyrate is the sodium salt of 4-phenylbutanoic acid, an aromatic saturated acyclic monocarboxylic acid. It falls under HTS 2915.60.10.00 as a salt of an aromatic butanoic acid, fitting Chapter 29 note (C)(1) for inorganic salts of organic acid-function compounds classified with the parent acid. Used primarily in medical treatments for urea cycle disorders.
Duty Rate — China → United States
43%
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
• Provide certificates of analysis confirming chemical purity and aromatic structure; ensure pharmaceutical-grade documentation for FDA compliance; verify salt formation doesn't alter parent acid classification per Chapter 29 notes