4-Hydroxyphenylpyruvic Acid from China
4-Hydroxyphenylpyruvic acid is a keto acid featuring both a carboxylic acid group and a ketone functionality, classifying it under HTS 2918.30.90.00 as a carboxylic acid with ketone function but without other oxygen functions beyond those specified. It is used in biochemical research and as an intermediate in pharmaceutical synthesis.
Duty Rate — China → United States
137.5%
Rate breakdown
9903.04.6096.3%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
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)
Import Tips
• Provide detailed chemical analysis (NMR, MS) confirming structure and purity to verify classification under 2918.30
• Include Safety Data Sheet (SDS) and transport certificates for hazardous goods handling during customs clearance
• Avoid misclassification as aromatic ketones (2914) by documenting the dominant carboxylic acid function