4,4-Bis(4-hydroxyphenyl) pentanoic acid from Mexico
This is a specific carboxylic acid with phenol function, explicitly named in HTS 2918.29.3900. It features two 4-hydroxyphenyl groups attached to the 4-position of pentanoic acid, classifying it under carboxylic acids with phenol function but without other oxygen functions. Used primarily as a pharmaceutical intermediate.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide Certificate of Analysis (CoA) confirming chemical identity and purity to avoid misclassification
• Ensure proper Hazard Communication labeling per GHS for phenolic carboxylic acids during customs clearance
• Verify REACH compliance if from EU; common pitfall is missing stability data for transport