Dipyridamole API
Dipyridamole is an aromatic heterocyclic pharmaceutical intermediate with pyrimidine rings, used in antiplatelet formulations. Classified under HTS 2933.59.80.00 for other aromatic pyrimidine hetero-compounds. Imported as bulk active pharmaceutical ingredient (API) powder.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If specifically enumerated compound
Certain named pyrimidines have dedicated subheadings; check EN for exact matches.
If for immunologic human blood fractions
If used in immunological products, shifts to Chapter 30 per chapter exclusions.
If classified as sugar derivative
Pyrimidine nucleosides may fall under heading 2942 if containing sugar moieties.
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Import Tips & Compliance
• Submit Drug Master File (DMF) references for FDA pre-clearance of this regulated API
• Label with exact CAS number (58-32-2) and purity percentage to match HTS chemical definition
• Avoid bulk packaging over 25kg drums to prevent anti-dumping scrutiny on pharma chemicals
Related Products under HTS 2933.59.80.00
Aminophylline USP Powder
Aminophylline is a heterocyclic compound containing a xanthine (purine) structure with pyrimidine rings, used as a bronchodilator for respiratory conditions. It falls under HTS 2933.59.80.00 as an aromatic heterocyclic compound with nitrogen hetero-atoms in pyrimidine rings, not elsewhere specified. Typically imported as a pharmaceutical-grade powder for compounding or manufacturing.
Flucytosine Micronized Powder
Flucytosine is a fluorinated aromatic pyrimidine antifungal agent, imported as micronized API powder. Falls under HTS 2933.59.80.00 for modified aromatic pyrimidine heterocycles per chapter note on halogenated derivatives. Used in pharmaceutical manufacturing.
Pipobroman
Pipobroman is a brominated pyrimidine alkylating agent for chemotherapy, aromatic structure. Classified HTS 2933.59.80.00 as other aromatic pyrimidine with halogenation. Rare API import.
Dihydro-5-azacitidine
Dihydro-5-azacitidine is a modified pyrimidine nucleoside analog for epigenetic research, technically aromatic. HTS 2933.59.80.00 as modified aromatic aza-pyrimidine. Research chemical.
Pyrimethamine Technical Grade
Pyrimethamine is a synthetic aromatic pyrimidine derivative used as an antimalarial agent and veterinary coccidiostat. It qualifies for HTS 2933.59.80.00 as an other aromatic heterocyclic with pyrimidine ring structure. Typically imported in technical powder form for further processing.
Sulfadiazine Sodium Salt
Sulfadiazine sodium is the sodium salt of a pyrimidine-containing sulfonamide antibiotic, aromatic heterocyclic structure. Classified in HTS 2933.59.80.00 as the organic base occurs after sulfonated derivatives per chapter salt notes. Pharmaceutical bulk import.