Cyclanic, cyclenic or cycloterpenic ethers and their halogenated, sulfonated, nitrated or nitrosated derivatives
Ethers, ether-alcohols, ether-phenols, ether-alcohol- phenols, alcohol peroxides, ether peroxides, acetal and hemiacetal peroxides, ketone peroxides (whether or not chemically defined), and their halogenated, sulfonated, nitrated or nitrosated derivatives > Cyclanic, cyclenic or cycloterpenic ethers and their halogenated, sulfonated, nitrated or nitrosated derivatives
Duty Rate (from China)
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
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 2909.20.00.00
Limonene Oxide
Limonene oxide is a cycloterpenic epoxide derived from limonene, a cyclic monoterpene hydrocarbon, through epoxidation forming an ether-like three-membered ring oxygen structure. It falls under HTS 2909.20.00.00 as a cycloterpenic ether used in fragrance and flavor formulations. This chemically defined compound meets Chapter 29 requirements for separate organic compounds with the specified cyclic ether functionality.
1,8-Cineole (Eucalyptol)
1,8-Cineole, commonly known as eucalyptol, is a bicyclic monoterpenoid ether found naturally in eucalyptus oil with a characteristic camphoraceous odor. Classified under HTS 2909.20.00.00 as a cyclanic ether, it's isolated as a chemically defined compound for pharmaceutical and flavor applications. The molecule's oxygen bridge ether functionality qualifies it for this specific heading.
Rose Oxide
Rose oxide is a monoterpenoid cyclic ether responsible for the green, metallic rose scent in geranium oil. This chemically defined compound falls under HTS 2909.20.00.00 due to its cyclanic ether structure derived from natural terpene precursors. Used primarily in perfumery as a character-impact odorant.
Menthofuran
Menthofuran is a cyclic ether formed during peppermint oil processing, featuring a furan ring structure characteristic of cycloterpenic ethers. Classified under HTS 2909.20.00.00 as a chemically defined organic compound with ether functionality. Used as flavor and fragrance intermediate with cooling properties.
Sclareol Oxide
Sclareol oxide is the epoxidized derivative of sclareol, a diterpenoid alcohol from clary sage, forming a characteristic cycloterpenic ether structure. Falls under HTS 2909.20.00.00 as a halogen-free, sulfonation-free ether derivative used in amber fragrance creation. Chemically defined with specific stereo-chemistry.
Nootkatone
Nootkatone is a sesquiterpenoid ketone with ether functionality derived from grapefruit, featuring a cycloterpenic structure. Although primarily classified by ketone function, ether-containing derivatives fall under HTS 2909.20.00.00 when ether characteristic predominates. Used in grapefruit flavor replication.
Cedrol
Cedrol is a sesquiterpene alcohol with cyclic ether characteristics found in cedarwood essential oils. When isolated as chemically pure compound, classified under HTS 2909.20.00.00 for its cyclanic ether functionality. Used in woody fragrance compositions.
Khusilal Oxide
Khusilal oxide is the oxide derivative of vetiver oil's khusimol alcohol, forming a characteristic cycloterpenic ether used in woody-oriental fragrances. Falls under HTS 2909.20.00.00 as a chemically defined cyclic ether compound. Provides earthy vetiver character.
Lavandulyl Acetate
Lavandulyl acetate is the acetate ester of lavandulol, a bicyclic monoterpenoid ether-alcohol featuring cyclanic ether structure. Classified under HTS 2909.20.00.00 when ether functionality predominates over ester characteristics per chapter ester classification notes. Used in lavender reconstructions.
Bisabolol Oxide A
Bisabolol oxide A is the primary epoxide derivative of alpha-bisabolol from chamomile oil, forming a cycloterpenic ether structure. Chemically defined compound under HTS 2909.20.00.00 used in skin care for anti-inflammatory properties. Most common isomer in commercial supply.
Farnesyl Acetate
Farnesyl acetate is the acetate ester of farnesol, a sesquiterpenoid with cyclic ether characteristics in its structure. Falls under HTS 2909.20.00.00 when supplied as high-purity ether-functional compound for fragrance use. Key component in lily of the valley accords.
Geranyl Acetate
Geranyl acetate is the acetate of geraniol featuring cyclenic ether structure derived from geranium oil. Pure compound classified under HTS 2909.20.00.00 for its predominant cyclic ether functionality despite ester group. Rose-geranium odor profile.
Nerolidol Oxide
Nerolidol oxide comprises epoxide derivatives of nerolidol, a sesquiterpenoid alcohol forming cycloterpenic ether structures. Chemically defined under HTS 2909.20.00.00 for use in apple and floral fragrance compositions. Multiple isomeric forms available.
Linalool Oxide
Linalool oxide is the epoxidation product of linalool forming cis and trans furanoid cyclic ethers. Classified under HTS 2909.20.00.00 as cyclanic ether used to impart watermelon and tea-like effects in flavors and fragrances. Chemically defined with specific stereochemistry.
Cineole Acetate
Cineole acetate derivatives combine 1,8-cineole ether structure with acetate functionality, classified under HTS 2909.20.00.00 when ether characteristic predominates. Used in medicinal and flavor applications providing eucalyptus cooling effect. Meets Chapter 29 chemical definition criteria.