2(3H)-Furanone Dihydro
Dihydro-2(3H)-furanone (gamma-butyrolactone alternative name) is a five-membered lactone oxygen heterocycle under HTS 2932.99.70.00. Pharmaceutical intermediate and solvent.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If lactone specific classification
Lactones have dedicated subheading earlier in heading 2932.
If nucleic acid derivative
Complex heterocyclic structures with specific functions classify later in numerical order.
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
• Pharma intermediate; Drug Master File (DMF) reference recommended
• Lactone ring opening sensitivity; purity >99.5% typically required
• Controlled precursor monitoring for some applications
Related Products under HTS 2932.99.70.00
Dioxolane
Dioxolane is a five-membered heterocyclic ring compound containing two oxygen hetero-atoms, classified under HTS 2932.99.70.00 as an aromatic heterocyclic compound with oxygen hetero-atoms only. It is commonly used as a solvent and intermediate in organic synthesis.
1,4-Dioxane
1,4-Dioxane is a six-membered heterocyclic ring with two oxygen atoms in 1,4-positions, aromatic heterocyclic compound under HTS 2932.99.70.00. Widely used as an industrial solvent despite regulatory concerns.
Tetrahydrofuran (THF)
Tetrahydrofuran is a five-membered heterocyclic ether with one oxygen hetero-atom, classified as aromatic heterocyclic under HTS 2932.99.70.00. Essential solvent in pharmaceutical and polymer manufacturing.
Morpholine
Morpholine is a six-membered heterocyclic compound with one oxygen and one nitrogen hetero-atom, but classified under oxygen-only heterocycles per HTS hierarchy 2932.99.70.00 when oxygen function predominates. Used in rubber vulcanization and corrosion inhibition.
Furan
Furan is a five-membered aromatic heterocyclic compound with one oxygen hetero-atom, specifically classified under HTS 2932.99.70.00. Used as solvent and in resin production.
2,5-Furandicarboxylic Acid
2,5-Furandicarboxylic acid (FDCA) is an aromatic heterocyclic oxygen compound with carboxylic acid groups, classified under HTS 2932.99.70.00. Bio-based alternative to terephthalic acid for PET production.