1,8-Naphthyridine
1,8-Naphthyridine is a rigid bicyclic heterocyclic compound with nitrogen atoms at positions 1 and 8, used in metal coordination chemistry. Falls under HTS 2934.99.90.01 as other heterocyclic nitrogen compounds not elsewhere specified.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If contains both sulfur and nitrogen in ring system
Compounds with nitrogen and sulfur (e.g., thiazines) classified earlier in 2934.10.
If imported pre-complexed with silver or gold salts
Coordination compounds classified by metal fragment per Chapter Note 3(C)(3).
If pesticide-active ingredient (>95% purity)
Pesticides are excluded from Chapter 29 classification per use-specific headings.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Declare molecular formula C8H6N2 precisely to match tariff description
• Include stability data showing no explosive peroxides formation
• Pre-clear with CBP chemistry lab if novel structure raises classification questions
Related Products under HTS 2934.99.90.01
Quinazoline
Quinazoline is a bicyclic heterocyclic compound featuring a fused benzene and pyrimidine ring, classified under HTS 2934.99.90.01 as 'other' heterocyclic compounds. It serves as a key intermediate in pharmaceutical synthesis for drugs targeting cancer and neurological disorders.
Pteridine
Pteridine is a fused pyrimido-pyrimidine heterocyclic system used in biochemical research and as a precursor for folate derivatives. It falls under HTS 2934.99.90.01 as other heterocyclic compounds not specifically named elsewhere in heading 2934.
Purine
Purine is the parent bicyclic heterocyclic compound (imidazole fused with pyrimidine) forming the core of adenine and guanine. Classified in HTS 2934.99.90.01 as other heterocyclic compounds, serving as a nucleic acid base precursor.
Isoquinoline
Isoquinoline is a heterocyclic aromatic organic compound with a benzene ring fused to a pyridine ring. It is imported under HTS 2934.99.90.01 as other heterocyclic compounds and used in alkaloid synthesis and as a corrosion inhibitor.
Oxazole
Oxazole is a five-membered heterocyclic aromatic ring containing oxygen and nitrogen atoms. Classified under HTS 2934.99.90.01 as other heterocyclic compounds, it is used in pharmaceutical intermediates and agrochemicals.
Benzotriazole
Benzotriazole is a heterocyclic compound with fused benzene and triazole rings, widely used as a corrosion inhibitor in antifreeze and metalworking fluids. HTS 2934.99.90.01 covers it as other heterocyclic compounds.