Apresoline API (Hydralazine Hydrochloride)
Bulk active pharmaceutical ingredient equivalent to Apresoline, consisting of pure hydralazine hydrochloride, a phthalazine-based vasodilator for hypertensive emergencies. HTS 2933.99.51.00 covers this specific listed cardiovascular drug as a separate chemically defined aromatic heterocyclic compound.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing nucleic acid-like impurities from synthesis
Nucleic acids and derivatives have specific provisions; synthesis byproducts could shift classification.
If precursor benzoic acid derivative dominates chemically
Precursor carboxylic acids classified earlier; if not fully cyclized to phthalazine, may remain in 2916.
If mixed with other bulk APIs in multi-component powder
Medicaments in bulk (not dosage form) shift to Chapter 30 if combined for specific therapeutic regimens.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Reference ANDA or DMF # on commercial invoice; generics without this face 3003/3004 scrutiny
• Test for hydrazine impurities (<1ppm) per ICH Q3D; elemental impurities cause holds
• Use NAFTA/USMCA certificate if from Canada/Mexico origin to claim preferential duty rates
Related Products under HTS 2933.99.51.00
Hydralazine Hydrochloride USP
Hydralazine hydrochloride is a chemically defined heterocyclic compound with nitrogen hetero-atoms, specifically an aromatic phthalazine derivative used as a direct-acting peripheral vasodilator. It falls under HTS 2933.99.51.00 as a cardiovascular drug in pure form for pharmaceutical manufacturing or compounding. This powder form meets Chapter 29 note (a) for separate chemically defined organic compounds.
Hydralazine HCl EP Grade
European Pharmacopoeia grade hydralazine hydrochloride, a pure aromatic heterocyclic compound acting as a smooth muscle relaxant for blood pressure control. Classified under HTS 2933.99.51.00 as the specific cardiovascular drug in bulk powder form. Complies with Chapter 29 for separate chemically defined compounds without solvents or additives.
Hydralazine Hydrochloride BP 99%+
British Pharmacopoeia compliant hydralazine hydrochloride powder, >99% purity, used in compounding IV solutions for acute hypertension. Falls squarely under HTS 2933.99.51.00 as the enumerated aromatic heterocyclic cardiovascular drug per tariff description.