Phtalazinone
Phthalazinone is a heterocyclic aromatic imide used in pharmaceutical research and dye chemistry. Falls under HTS 2925.19.42.00 as 'other' aromatic imide. Fused ring imide structure per heading 2925.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If azine ring system classification dominates
Other heterocyclic compounds with nitrogen classified later numerically
If for purine/imidazole analogs
Specific heterocyclic systems take precedence over general imide classification
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Import Tips & Compliance
• Heterocycle ring system NMR confirmation; batch purity analysis; research chemical import permits if applicable
Related Products under HTS 2925.19.42.00
Phthalimide
Phthalimide is an aromatic cyclic imide derived from phthalic anhydride, used primarily as an intermediate in organic synthesis for pharmaceuticals and agrochemicals. It falls under HTS 2925.19.42.00 as an aromatic imide compound other than saccharin. This chemically defined organic compound conforms to Chapter 29 note (a) for separate organic compounds.
N-Phthalyl-L-Glutamic Anhydride
This aromatic imide derivative serves as a key intermediate in peptide synthesis and pharmaceutical production. Classified under HTS 2925.19.42.00 as an aromatic imide other than saccharin. Its carboxyimide-function structure matches Chapter 29 heading 2925 requirements.
4-Nitrophthalimide
A nitro-substituted aromatic imide used in dye synthesis and as a pharmaceutical intermediate. Falls under HTS 2925.19.42.00 as an aromatic imide derivative (nitro group permitted per Chapter notes). Chemically defined per Chapter 29 note (a).
Succinimide
Succinimide is a five-membered ring aromatic imide used in pharmaceutical synthesis and as a polymer modifier. Classified in HTS 2925.19.42.00 as 'other' aromatic imide. Its cyclic imide structure qualifies under heading 2925 per Chapter 29 definitions.
N-Bromosuccinimide (NBS)
N-Bromosuccinimide is an aromatic brominated imide widely used as a brominating and oxidizing reagent in organic synthesis. HTS 2925.19.42.00 covers this as an 'other' aromatic imide derivative. Bromine substitution permitted per Chapter 29 notes on derivatives.
Maleimide
Maleimide is an α,β-unsaturated aromatic imide used in polymer chemistry and pharmaceutical conjugation reactions. Falls under HTS 2925.19.42.00 as aromatic imide 'other'. Unsaturated imide function clearly within heading 2925 scope.