Phenanthroline
1,10-Phenanthroline is a tricyclic aromatic heterocyclic compound famous for its metal chelation properties in analytical chemistry. Classified under HTS 2934.99.44.00 as other aromatic heterocycles. Widely used to form colored complexes with iron(II) for titration.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified under bipyridine-like structures
Similar chelating nitrogen heterocycles often fall under heading 2933.
If when imported as diagnostic reagent kit component
Laboratory reagents for analysis classified in Chapter 38.
If imported pre-complexed with metal ions
Metal coordination compounds classified by latest numerical heading per note 3(C)(3).
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Include usage declaration as analytical reagent to support classification
• Ensure packaging prevents moisture absorption which affects chelation properties
• CAS 66-71-7 documentation required for positive chemical identification
Related Products under HTS 2934.99.44.00
Quinazoline
Quinazoline is a bicyclic aromatic heterocyclic compound with a fused benzene and pyrimidine ring, classified under HTS 2934.99.44.00 as an other aromatic heterocyclic compound. It serves as a key intermediate in pharmaceutical synthesis for drugs targeting cancer and neurological disorders.
Pteridine
Pteridine is a fused heterocyclic system containing pyrimidine and pyrazine rings, essential for biochemical research and vitamin synthesis. Classified under HTS 2934.99.44.00 as an aromatic heterocyclic compound not elsewhere specified. Used in folate and flavin coenzyme production.
Purine
Purine is a fundamental aromatic heterocyclic compound forming the basis of adenine and guanine nucleobases. Falls under HTS 2934.99.44.00 as other aromatic heterocyclic compounds. Critical for nucleic acid research and pharmaceutical intermediates.
1,8-Naphthyridine
1,8-Naphthyridine is a rigid bicyclic aromatic system used in coordination chemistry and antibiotic synthesis. Classified under HTS 2934.99.44.00 as other aromatic heterocyclic compounds. Its chelating properties make it valuable for metal complex formation.
Acridine
Acridine is a tricyclic aromatic heterocycle with a central pyridine ring, used in dye chemistry and antimalarial drug development. Falls under HTS 2934.99.44.00 as other aromatic heterocyclic compound. Exhibits fluorescence properties valuable for biological staining.
Xanthine
Xanthine is a purine base and key intermediate in caffeine and theophylline biosynthesis. Classified under HTS 2934.99.44.00 as an aromatic heterocyclic compound. Pharmaceutical precursor for bronchodilators and stimulants.