1,4-Bis[N-(3-dimethylcarbamoxy-α-picolyl)-N,N-dimethylammonio]-butane-2,3-dione Dibromide (n=2)
This is a specific bis-pyridinium oxime compound with n=2, featuring two pyridine rings linked by a butane dione chain with dimethylcarbamoxy groups and dibromide counterions. It falls under HTS 2933.39.61.30 as a heterocyclic compound containing unfused pyridine rings, described in additional U.S. note 3 to section VI. Used primarily as a research chemical or potential antidote intermediate in pharmaceutical synthesis.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If veterinary use product
Veterinary pyridinium compounds fall under specific subheading 2933.39.21, separate from general research chemicals in note 3 products.
If classified as organic derivative for medicine
Salts or derivatives of heterocyclic compounds used in pharmaceuticals may shift to Chapter 29 subchapter for medicinal organic compounds.
If imported as mixture or solution for lab use
If dissolved in solvents beyond chapter allowances or mixed, it becomes a chemical preparation under Chapter 38 rather than pure compound.
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Import Tips & Compliance
• Provide detailed chemical analysis and purity certificates to confirm exact structure matching the HTS description; ensure compliance with TSCA registration for new chemicals; declare as research chemical to avoid pesticide regulations if not for agricultural use
Related Products under HTS 2933.39.61.30
1,6-Bis[N-(3-dimethylcarbamoxy-α-picolyl)-N,N-diethylammonio]-hexane-2,5-dione Dibromide (n=4)
A bis-oxime pyridinium dibromide with n=4, containing diethylammonium groups (C4 alkyl ≤C10) and a hexane dione linker with carbamoxy-substituted picolyl moieties. Classified under HTS 2933.39.61.30 due to its precise structural match to the heading for unfused pyridine heterocycles listed in U.S. note 3. Primarily imported for chemical research and synthesis of nerve agent antidotes.
1,10-Bis[N-(3-dimethylcarbamoxy-α-picolyl)-N-butyl-N-methylammonio]-decane-2,9-dione Dibromide (n=8)
This n=8 homolog features butyl-methyl (C5 total ≤C10) ammonio groups on a decane dione chain bridged by carbamoxy-picolyl pyridines, as a dibromide salt. It matches HTS 2933.39.61.30 exactly as a product described in additional U.S. note 3 to section VI for nitrogen-heterocyclic pyridines. Used in advanced chemical research for potential therapeutic applications.
1,12-Bis[N-(3-dimethylcarbamoxy-α-picolyl)-N,N-dipropylammonio]-dodecane-2,11-dione Dibromide (n=10)
The longest chain variant (n=12 max) with dipropyl (C6 ≤C10) ammonio groups, pyridine-carbamoxy units, and dodecane dione core as dibromide. Directly specified under HTS 2933.39.61.30 for these exact bis-ammonio alkane dione dibromides per U.S. note 3. Imported mainly for synthetic chemistry and pharmacological studies.
1,8-Bis[N-(3-dimethylcarbamoxy-α-picolyl)-N-ethyl-N-hexylammonio]-octane-2,7-dione Dibromide (n=6)
An n=6 asymmetric dialkyl (ethyl+hexyl=C8 ≤C10) bis-pyridinium dibromide with precise carbamoxy-α-picolyl substitution on octane dione. Fits HTS 2933.39.61.30 as a chemically defined heterocyclic pyridine compound under additional U.S. note 3. Supplied to research labs for nerve agent reactivation studies.