Suberic Acid Monomethyl Ester from Japan
Suberic acid monomethyl ester (HOOC(CH2)6CO2CH3), half-ester derivative used in polymer synthesis. Classifies HTS 2917.19.70 following parent suberic acid per Chapter 29 ester classification rules. Single ester group maintains acid-function classification.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide acid/ester equivalent weight analysis confirming mono-esterification
• Include HPLC chromatogram showing single peak purity >98%
• Declare residual solvent levels per ICH Q3C guidelines