Clonazepam (Klonopin)
Clonazepam is a nitrobenzodiazepine anticonvulsant and sedative with a 1,4-benzodiazepine ring containing two nitrogen hetero-atoms. Classified under HTS 2933.99.65.00 for its primary CNS effects including anti-epileptic and hypnotic properties. Imported as active pharmaceutical ingredient (API) powder.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified by carboxamide function rather than ring system
Chapter notes prioritize latest numerical heading, but amide function could compete.
If in finished veterinary dosage forms
Veterinary medicaments move to Chapter 30 even if chemically pure.
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Import Tips & Compliance
• Schedule IV controlled substance requires DEA Form 236 and advance electronic reporting via USPPG
• Include pharmacopeial certificates (USP/EP) confirming identity and enantiomeric purity
• Verify nitrogen content via elemental analysis to confirm heterocyclic classification
Related Products under HTS 2933.99.65.00
Diazepam (Valium)
Diazepam is a benzodiazepine derivative classified as a sedative and hypnotic, featuring a fused benzene and diazepine ring system with nitrogen hetero-atoms. It falls under HTS 2933.99.65.00 as an aromatic heterocyclic compound primarily used for its central nervous system effects as an anticonvulsant, hypnotic, and sedative. This pure chemical form is imported for pharmaceutical manufacturing.
Lorazepam (Ativan)
Lorazepam, a 2-chloro-1,4-benzodiazepine, acts as an intermediate-acting sedative-hypnotic and anticonvulsant with nitrogen-containing heterocyclic rings. Falls under HTS 2933.99.65.00 as an aromatic drug primarily affecting the CNS. Bulk API imported for tablet/capsule production.
Zolpidem Tartrate
Zolpidem, an imidazopyridine hypnotic, features a bicyclic nitrogen-heterocyclic structure modified with aromatic rings. Classified in HTS 2933.99.65.00 as a sedative primarily affecting CNS via GABA receptor modulation. Imported as tartrate salt API for immediate-release tablets.
Phenobarbital
Phenobarbital, a barbituric acid derivative, contains a pyrimidine ring with two nitrogen hetero-atoms, functioning as both anticonvulsant and sedative. Falls under HTS 2933.99.65.00 as an aromatic heterocyclic CNS drug. Long-acting barbiturate API imported in crystalline powder form.
Alprazolam (Xanax)
Alprazolam, a triazolobenzodiazepine, features a fused 1,2,4-triazole and 1,4-diazepine ring system with multiple nitrogen hetero-atoms. HTS 2933.99.65.00 classification for its anxiolytic, sedative, and anticonvulsant properties. High-potency API imported for oral dosage forms.
Zaleplon
Zaleplon, a pyrazolopyrimidine hypnotic, contains fused five- and six-membered nitrogen heterocyclic rings with sedative CNS effects. Classified under HTS 2933.99.65.00 as modified aromatic drug for sleep induction. Ultra-short acting non-benzodiazepine API.