Gamma-Butyrolactone (GBL) from Japan
Gamma-Butyrolactone is a five-membered lactone ring heterocyclic compound with oxygen as the sole hetero-atom, classified under HTS 2932.20.50.50 as 'other lactones.' It is a colorless liquid used as a solvent and intermediate in pharmaceutical and polymer production.
Duty Rate — Japan → United States
23.8%
Rate breakdown
9903.04.6211.3%Patented pharmaceutical articles that are the product of Japan, of a European Union member country, of South Korea, of Switzerland, or of Liechtenstein as provided for in subdivisions (c) and (f) of U.S. note 40 to this subchapter
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 detailed chemical analysis certificates confirming lactone structure and purity to avoid reclassification as solvents under Chapter 38
• Comply with DEA precursor chemical regulations; register as an importer if used in controlled substance production
• Ensure proper Hazard Communication labeling (HCS) for corrosive properties and GHS compliance