Phthalide from Germany
Phthalide is a bicyclic aromatic lactone consisting of a benzene ring fused to a five-membered γ-lactone ring, falling under HTS 2932.20.4500 as an aromatic lactone. It serves as an intermediate in pharmaceutical synthesis and dye production.
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
• Submit NMR or mass spectrometry data verifying the fused aromatic lactone structure for proper Chapter 29 classification
• Declare intended use as chemical intermediate only; avoid consumer packaging that suggests retail sale
• Ensure stabilizer additions qualify under Chapter note (f) for preservation without changing classification