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.
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 a salt like caffeine citrate
Caffeine salts classified with vegetable alkaloids in 2939 rather than parent heterocyclic compound per Chapter note on salts.
If containing added sugars or chemically modified for specific therapeutic use
Organic compounds with added sugar groups fall under 2942 per Chapter note (c).
If when diluted in solvents beyond Chapter note (e) transport limits
Solutions exceeding safety/transport criteria classified as chemical preparations in Chapter 38.
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
• Provide Certificate of Analysis confirming >98% purity and absence of isomers to avoid reclassification under mixtures note (b)
• Ensure USP/EP pharmacopeia compliance for FDA import; common pitfall is missing stability data for anhydrous form
• Declare exact caffeine content per kg; anti-dumping duties may apply from certain origins
Related Products under HTS 2933.99.97.01
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.
Indole-3-Carbaldehyde
Indole-3-carbaldehyde, a bicyclic benzopyrrole with aldehyde substitution, used in perfume and pharma synthesis. HTS 2933.99.9701 as other nitrogen heterocycles; aldehyde function doesn't override per classification notes.