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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing additional sulfur in ring system
Nucleic acid derivatives with S/N rings under 2934 take precedence.
If serum or vaccine containing famotidine stabilizer
Immunological products excluded from Chapter 29 per notes.
If technical grade for industrial rather than pharma use
Non-pharma grades classified as chemical preparations.
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Import Tips & Compliance
• Include polymorph Form A certificate to match FDA reference
• Validate impurity profile per ICH Q3A guidelines
• Use temperature-controlled shipping to prevent degradation
Related Products under HTS 2933.99.90.00
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.
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.
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.