Carbazole
Heterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic: > Carbazole
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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 2933.99.11.00
Carbazole Powder
Pure carbazole (C12H9N) is a tricyclic aromatic heterocyclic compound with nitrogen hetero-atom, classified under HTS 2933.99.11.00 as an aromatic heterocyclic compound. It appears as white to pale yellow flakes or powder, primarily used as an intermediate in dye and pigment production.
N-Ethylcarbazole
N-Ethylcarbazole features ethylation on the nitrogen hetero-atom of the carbazole ring system, qualifying as modified aromatic under HTS 2933.99.11.00. Widely used in organic electronics, photorefractive materials, and dye intermediates.
Carbazole Technical Grade 98%
Technical grade carbazole (98% purity) contains minor impurities but remains a separate chemically defined organic compound per Chapter 29 note (a), classified under HTS 2933.99.11.00. Primarily used in large-scale dye and agrochemical manufacturing.
4-Carbazoleboronic Acid
4-Carbazoleboronic acid retains the core carbazole heterocyclic structure with boronic acid substitution, classified as modified aromatic under HTS 2933.99.11.00 per Chapter 29 organo-inorganic compound rules. Essential Suzuki coupling reagent for pharmaceutical synthesis.
9H-Carbazole Flakes
9H-Carbazole in flake form is the standard commercial presentation of this aromatic heterocyclic compound, classified specifically under HTS 2933.99.11.00. Used extensively in production of carbazole violet pigments and pharmaceuticals.
3-Aminocarbazole
3-Aminocarbazole is a modified aromatic derivative of carbazole with an amino group substitution, maintaining the core heterocyclic nitrogen structure required by HTS 2933.99.11.00. Used as an intermediate in pharmaceutical and optical brightener synthesis.