Theobromine Powder
Theobromine (3,7-dimethylxanthine), a methylxanthine alkaloid with fused nitrogen-heterocyclic rings, extracted for pharmaceutical and food applications. Falls under HTS 2933.99.9701 as 'other' heterocyclic compounds with nitrogen hetero-atoms only. Excluded from 2939 as it's often supplied in pure form rather than crude alkaloid mixtures.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If when imported as caffeine/theobromine alkaloid mixture from natural sources
Vegetable alkaloids classified in 2939 regardless of purity if not separated compounds.
If considered a phenol derivative rather than heterocyclic
Structural interpretation differences; purine ring takes precedence under numerical order rule.
If sold as research chemical mixture with anti-dusting agents
Additives rendering suitable for specific lab use move to preparations in 3824.
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Import Tips & Compliance
• Verify COA shows single isomer purity; mixtures of xanthine isomers fall under Chapter note (b)
• Include stabilizer declaration if present; Chapter note (f) allows but requires proof of necessity
Related Products under HTS 2933.99.97.01
Caffeine Anhydrous Powder
Pure caffeine (1,3,7-trimethylxanthine), a purine alkaloid with a fused pyrimidine-imidazole nitrogen heterocyclic ring system, used in pharmaceuticals and energy supplements. Classified under HTS 2933.99.9701 as a heterocyclic compound with nitrogen hetero-atoms only, not elsewhere specified in heading 2933. Meets Chapter 29 note for separate chemically defined organic compounds.
Nicotine Free Base Liquid
Pure nicotine ((S)-3-(1-methylpyrrolidin-2-yl)pyridine), a pyridine-pyrrolidine bicyclic nitrogen heterocyclic compound used in pharmaceuticals and vaping. Classified in HTS 2933.99.9701 as other nitrogen heterocycles; pyridine ring qualifies despite dual heteroatoms per heading scope.
Imidazole Pharmaceutical Grade
Imidazole (1H-imidazole), a five-membered nitrogen heterocyclic ring compound used as pharmaceutical intermediate and antifungal agent. HTS 2933.99.9701 covers this azole heterocycle with nitrogen hetero-atoms only, not specified elsewhere.
Pyrazole Crystals
Pyrazole (1H-pyrazole), a five-membered aromatic heterocycle with adjacent nitrogen atoms, used in agrochemicals and pharmaceuticals. Falls under HTS 2933.99.9701 as other nitrogen heterocyclic compounds per Chapter 29 scope.
Triazole Technical Grade
1,2,4-Triazole, a five-membered heterocycle with three nitrogen atoms, essential for antifungal drug synthesis like fluconazole. HTS 2933.99.9701 for unspecified nitrogen heterocycles; distinguished from substituted triazoles.
Pyrrole ACS Reagent
Pyrrole (1H-pyrrole), a five-membered nitrogen heterocycle fundamental to porphyrin synthesis and electronics. Classified HTS 2933.99.9701 as other nitrogen hetero-atom compounds; ACS grade for lab use.