Benzoin tetrahydropyranyl ester; and Xanthen-9-one
Heterocyclic compounds with oxygen hetero-atom(s) only: > Other: > Other: > Aromatic: > Benzoin tetrahydropyranyl ester; and Xanthen-9-one
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
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)
Products classified under HTS 2932.99.39.00
Benzoin Tetrahydropyranyl Ester
Benzoin tetrahydropyranyl ester is a protected form of benzoin, a heterocyclic compound with oxygen hetero-atoms, used primarily as an intermediate in organic synthesis for pharmaceuticals and fragrances. It falls under HTS 2932.99.39.00 as a specifically named aromatic heterocyclic compound with oxygen hetero-atoms only. This chemical is chemically defined and separate, fitting Chapter 29 note (a).
Xanthen-9-one
Xanthen-9-one, also known as xanthone, is an aromatic heterocyclic compound featuring a central pyrone ring fused with benzene rings, containing oxygen hetero-atoms only. It is used in dye synthesis, pharmaceuticals, and as a fluorescent probe, classified under HTS 2932.99.39.00 as a specifically enumerated product. This pure organic compound meets Chapter 29 requirements for separate chemically defined heterocycles.
Pharmaceutical Grade Benzoin Tetrahydropyranyl Ester
High-purity benzoin tetrahydropyranyl ester intended for API synthesis in drug manufacturing, a chemically defined aromatic heterocyclic ester with oxygen hetero-atoms. Classified specifically under HTS 2932.99.39.00 per the tariff description. Excludes mixtures or preparations, aligning with Chapter 29 scope.
Laboratory Research Xanthen-9-one
Purified xanthen-9-one supplied for research labs, featuring oxygen-only heterocyclic structure, explicitly named in HTS 2932.99.39.00. Used in photochemistry and as a synthetic building block, it qualifies as a separate organic compound under Chapter 29.