Diethyl Malonate Precursor Malonic Acid from Japan
Malonic acid specifically manufactured as precursor for diethyl malonate production in pharmaceutical intermediates. Pure compound classification under HTS 2917.19.35.00 confirmed by spectroscopic analysis showing no ester impurities.
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 downstream user letters confirming chemical intermediate status for potential duty relief
• Ensure batch consistency with HPLC chromatograms showing single peak at malonic acid RT
• Monitor decarboxylation risk during transport; specify temperature-controlled shipping