1,8-Naphthalimide
A fused-ring aromatic imide used in fluorescent dyes and optical brighteners. HTS 2925.19.42.00 as 'other' aromatic imide. Polycyclic aromatic structure qualifies under heading 2925 aromatic provision.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If used primarily as fluorescent brightening agent
Synthetic fluorescent agents excluded from Chapter 29 per chapter note 2(g)
If for polycyclic imidazole/imidazoline derivatives
Different heterocyclic systems classified by ring type later in chapter
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Import Tips & Compliance
• Fluorescence quantum yield specs required; light-sensitive packaging validation; dye intermediate declaration prevents 3204 classification
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.