Caffeine Anhydrous Powder
Pure caffeine anhydrous is a xanthine alkaloid classified as a heterocyclic nitrogen compound under HTS 2933.99.90.00 due to its purine ring structure. It is imported as a pharmaceutical intermediate or drug ingredient for energy supplements and medications.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing caffeine citrate salt form
Salts of heterocyclic compounds classified under later heading 2939 per chapter note.
If for food or beverage use, not pharmaceutical
Caffeine for food applications excluded from Chapter 29, goes to Chapter 21.
If pre-formulated as finished dosage form
Finished drug products containing caffeine classified in Chapter 30.
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Import Tips & Compliance
• Verify COA confirms purity >98% as drugs require strict quality documentation
• Include FDA Drug Master File if used in finished pharmaceuticals
• Avoid misclassification as food additive which falls under Chapter 21
Related Products under HTS 2933.99.90.00
Theophylline USP Grade
Theophylline is a methylxanthine bronchodilator drug with a fused imidazole-pyrimidine heterocyclic structure, falling under HTS 2933.99.90.00. Used primarily in respiratory medications, it qualifies as a 'drug' per tariff specifications.
Methimazole Tablets API
Methimazole is an imidazole derivative antithyroid drug, a nitrogen heterocyclic compound specifically under HTS 2933.99.90.00 as a drug. It inhibits thyroid hormone synthesis and is imported as active pharmaceutical ingredient.
Famotidine Active Pharmaceutical Ingredient
Famotidine, a histamine H2-receptor antagonist, features a thiazole-imidazolyl nitrogen heterocyclic structure qualifying for HTS 2933.99.90.00. Imported as bulk drug substance for acid reflux medications like Pepcid.
Loperamide Hydrochloride Bulk Drug
Loperamide HCl, an antidiarrheal piperidine derivative, is a nitrogen heterocyclic compound imported under HTS 2933.99.90.00 as a drug. Its opioid receptor agonist structure fits Chapter 29 drug specifications.
Pyridostigmine Bromide API
Pyridostigmine bromide, a quaternary pyridinium cholinesterase inhibitor, falls under HTS 2933.99.90.00 as a nitrogen heterocyclic drug. Used for myasthenia gravis treatment, imported as sterile bulk powder.
Nicotine Bitartrate Dihydrate USP
Nicotine bitartrate, the dihydrate salt of pyridine/pyrrolidine alkaloid nicotine, qualifies as a heterocyclic nitrogen drug under HTS 2933.99.90.00. Used in smoking cessation therapies and imported as purified API.