Clemastine Fumarate
Clemastine fumarate is a second-generation antihistamine with anti-nauseant applications in allergy treatment. Modified aromatic heterocyclic structure under HTS 2933.59.21.00. Fits chapter for drugs with nitrogen hetero-atoms.
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Alternative Classifications
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Import Tips & Compliance
• Fumarate salt per note C; HPLC purity cert needed
• Pitfall: brightening agent additives exclude to 3204
• GMP sourcing prevents detentions
Related Products under HTS 2933.59.21.00
Promethazine Hydrochloride
Promethazine hydrochloride is a first-generation antihistamine and phenothiazine derivative containing a modified aromatic pyrimidine-like structure, primarily used to treat motion sickness, nausea, and allergic reactions. It falls under HTS 2933.59.21.00 as an aromatic antihistamine principally used as an anti-nauseant, consistent with chapter notes for heterocyclic nitrogen compounds with pyrimidine rings. This chemically defined compound is imported in pure form for pharmaceutical formulation.
Cyclizine Hydrochloride
Cyclizine hydrochloride is a piperazine-based antihistamine used mainly for preventing motion sickness and treating vertigo/nausea. Its heterocyclic structure with piperazine ring qualifies it under HTS 2933.59.21.00 as an aromatic antihistamine anti-nauseant. Chapter notes confirm classification for separate chemically defined compounds with nitrogen hetero-atoms.
Buclizine Hydrochloride
Buclizine hydrochloride, a piperazine antihistamine, treats nausea, vomiting, and motion sickness with antiemetic properties. Classified under HTS 2933.59.21.00 for its aromatic heterocyclic structure containing piperazine ring, as a drug principally used as anti-nauseant. Meets chapter definition for separate organic compounds with nitrogen hetero-atoms.
Meclizine Hydrochloride
Meclizine hydrochloride is a piperazine antihistamine primarily indicated for motion sickness prevention and vertigo treatment. Its modified aromatic structure with piperazine qualifies for HTS 2933.59.21.00 as an anti-nauseant drug. Chapter notes support classification of such chemically defined pharmaceuticals.
Dimenhydrinate
Dimenhydrinate is the aminophylline salt of diphenhydramine, functioning as an antihistamine antiemetic for motion sickness. Despite salt form, classified with the organic base under HTS 2933.59.21.00 per chapter note C(1) for aromatic pyrimidine-related antihistamines. Used principally as anti-nauseant.
Hydroxyzine Hydrochloride
Hydroxyzine hydrochloride, a piperazine antihistamine, treats anxiety, itching, and nausea pre-surgery. Falls under HTS 2933.59.21.00 for aromatic heterocyclic drugs principally used as antihistamines/anti-nauseants. Chemically defined per chapter (a) with stabilizer allowances.