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Theobromine Powder from Mexico

Theobromine is a methylxanthine alkaloid with fused pyrimidine rings in its purine structure, used in pharmaceuticals and as a chemical intermediate. Classified under HTS 2933.59.70.00 due to its aromatic nature and inclusion in additional U.S. note 3 to section VI. It qualifies as a separate chemically defined heterocyclic compound.

Duty Rate — Mexico → United States

16.5%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico

Import Tips

Provide spectroscopic data (NMR, IR) confirming pyrimidine ring structure for CBP verification

Ensure packaging meets UN standards for chemical transport if in powder form over certain quantities

Avoid bulk packaging that suggests industrial use, which could trigger reclassification