Ethyl 2-Anthracenesulfonate from Germany
Ethyl 2-anthracenesulfonate is the ethyl ester of 2-anthracenesulfonic acid, explicitly covered under HTS 2904 for sulfo derivatives and their ethyl esters. Used in organic synthesis for protecting groups and dye precursors. Chapter notes confirm esters classify with the parent acid-function compound.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.97, articles the product of a member state of the European Union, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 10 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Confirm ester purity via HPLC to distinguish from acid/salt forms; declare exact CAS number for customs verification
• Avoid bulk packaging that implies mixture status