Other
Heterocyclic compounds with oxygen hetero-atom(s) only: > Lactones: > Other: > Other > Other
Duty Rate (from China)
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Products classified under HTS 2932.20.50.50
Gamma-Butyrolactone (GBL)
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.
Ascorbic Acid (Vitamin C) Lactone
Ascorbic acid contains a five-membered lactone ring with oxygen hetero-atom, falling under HTS 2932.20.50.50 as other lactones. This essential vitamin is used in food supplements, cosmetics, and pharmaceuticals for its antioxidant properties.
Phthalide
Phthalide is a bicyclic lactone with a five-membered oxygen-containing heterocyclic ring fused to benzene, classified under 2932.20.50.50. Used as an intermediate in dye and pharmaceutical synthesis.
Butyrolactone Technical Grade
Technical grade gamma-butyrolactone (GBL) with ≥99% purity, a simple five-membered lactone ring compound under HTS 2932.20.50.50. Used in resin production and as a polymer solvent.
Glucono-Delta-Lactone (GDL)
Glucono-delta-lactone is a six-membered lactone ring derived from gluconic acid, classified as other lactones under HTS 2932.20.50.50. Widely used as a slow-release acidulant in food processing.
Pantolactone
Pantolactone, a five-membered lactone used in pantothenic acid (Vitamin B5) synthesis, classified under HTS 2932.20.50.50 for other oxygen-heterocycle lactones. Essential intermediate for vitamin production.
Epsilon-Caprolactone
Epsilon-caprolactone is a seven-membered lactone ring used in polymer synthesis for biomedical applications, classified under HTS 2932.20.50.50. Key monomer for biodegradable polycaprolactone.
D-Erythronolactone
D-Erythronolactone is a four-carbon sugar lactone with five-membered oxygen ring, under HTS 2932.20.50.50. Used in carbohydrate chemistry and as chiral building block.
Valerolactone (Dihydro-2(3H)-Furanone)
Delta-valerolactone, a six-membered lactone ring compound classified under HTS 2932.20.50.50. Used as fragrance fixative and polymer intermediate.
Ribonolactone
Ribonolactone from ribose sugar features a five-membered furanose lactone ring with oxygen hetero-atom only, under HTS 2932.20.50.50. Used in nucleotide synthesis.
Pentolactone
Pentolactone (tetrahydro-6-methyl-2H-pyran-2-one) is a six-membered delta-lactone used in flavorings and polymer chemistry, classified HTS 2932.20.50.50.
Macrocyclic Lactone Muscopyridine
Macrocyclic lactone used in musk fragrance synthesis, with large oxygen-containing heterocyclic ring, under HTS 2932.20.50.50 for other lactones.