γ-Butyrolactone USP Grade
USP-grade γ-Butyrolactone is a high-purity lactone meeting pharmaceutical standards, classified as a heterocyclic oxygen-only compound under HTS 2932.20.50.10 per Chapter 29 definitions. Primarily used as an intermediate for synthesizing GABA-related drugs.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing nitrogen hetero-atoms
Heterocyclic compounds with nitrogen fall under Chapter 2933, later numerical order.
If immunological or serum-based product
Chapter 29 excludes immunological products per note 2(e), shifting to Chapter 30.
If for diagnostic lab reagents
Lab reagents from organic compounds classified in Chapter 38, not pure Chapter 29.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Provide USP certificate of analysis for FDA compliance; ensure List I chemical reporting to DEA; avoid water-dissolved forms unless per Chapter Note (d)
Related Products under HTS 2932.20.50.10
Gamma-Butyrolactone (GBL)
Gamma-Butyrolactone (GBL) is a cyclic lactone, a five-membered heterocyclic ring compound containing one oxygen hetero-atom, classified under HTS 2932.20.50.10 as 'Butyrolactone'. It serves as a chemical intermediate in pharmaceutical and polymer production.
Butyrolactone Technical Grade 99%
Technical grade butyrolactone at 99% purity is a separate chemically defined organic compound fitting Chapter 29 note (a), specifically under lactones with oxygen hetero-atom(s) only in HTS 2932.20.50.10. Used in industrial synthesis of pyrrolidones and solvents.
Dihydrofuran-2(3H)-one (Butyrolactone)
Dihydrofuran-2(3H)-one, synonymous with butyrolactone, is a lactone with a single oxygen hetero-atom in its heterocyclic ring, directly under HTS 2932.20.50.10. Essential for polymer and resin manufacturing.
Butyrolactone with Stabilizer
Stabilized butyrolactone includes necessary preservatives for transport as allowed by Chapter Note (f), remaining classified under HTS 2932.20.50.10 as the core lactone compound. Used in electronics cleaning formulations.
Industrial Butyrolactone Solvent Precursor
Industrial-grade butyrolactone serves as a precursor for solvents like NMP, classified as a pure lactone heterocyclic under HTS 2932.20.50.10 per Chapter 29(a). Meets criteria for separate chemically defined compound.