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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If contains a three-membered epoxide ring
Epoxides with three-membered rings are excluded from heading 2934 and classified under heterocyclic compounds with nitrogen in 2933.
If primarily aromatic cyclic hydrocarbon without significant heteroatoms
Purely carbocyclic aromatic compounds fall under Chapter 29 subchapter I rather than heterocyclic compounds.
If imported as technical grade mixture with >20% impurities
Mixtures not meeting 'chemically defined' criteria per Chapter 29 note (a) shift to prepared chemical preparations.
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
• Provide Certificate of Analysis (CoA) confirming chemical purity and structure to avoid misclassification as mixtures
• Ensure proper Hazard Communication labeling per GHS for safe transport of reactive heterocyclic compounds
• Verify REACH compliance if transshipping through EU to prevent customs holds on pharmaceutical intermediates
Related Products under HTS 2934.99.90.01
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.
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.
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.