γ-Butyrolactone (Aromatic Derivatives) from Mexico
Aromatic-substituted γ-butyrolactones are five-membered lactone rings with aromatic substituents, classified under HTS 2932.20.4500 as aromatic oxygen-heterocyclic lactones. Used as solvents and pharmaceutical intermediates.
Duty Rate — Mexico → United States
16.5%
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 CoA confirming aromatic substitution on lactone ring to distinguish from aliphatic GBL (2932.20.5010)
• Include end-use statement specifying industrial solvent/pharma intermediate to avoid DEA scrutiny
• Package in industrial drums, not consumer sizes, to maintain chemical compound classification