4-Hydroxyphenylpyruvic Acid from Mexico
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 — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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