Isradipine
Isradipine, a 1,4-dihydropyridine derivative, selectively blocks L-type calcium channels for hypertension therapy. Its nitrogen-heterocyclic aromatic structure fits HTS 2933.99.53.00 as a cardiovascular drug API. Typically imported as micronized powder for tablet coating.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| π¨π³China | 6.5% | β | 6.5% |
| π²π½Mexico | 6.5% | β | 6.5% |
| π¨π¦Canada | 6.5% | β | 6.5% |
| π©πͺGermany | 6.5% | β | 6.5% |
| π―π΅Japan | 6.5% | β | 6.5% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If immunologicals or antisera related
Chapter exclusions send immunological products to Chapter 30.
If for veterinary pharmaceutical use
Different end-use (vet vs human) may shift to other heterocyclic provisions.
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
β’ D50 particle size 5-15ΞΌm critical - include laser diffraction report
β’ Photostability testing required due to yellowing tendency
β’ Single-source API often - verify supplier DMF status with FDA
Related Products under HTS 2933.99.53.00
Diltiazem Hydrochloride
Diltiazem hydrochloride is a benzothiazepine derivative calcium channel antagonist used for hypertension, angina, and arrhythmias. Its nitrogen-containing heterocyclic structure qualifies it for HTS 2933.99.53.00 as an aromatic cardiovascular drug. Imported typically as bulk API powder for tablet manufacturing.
Felodipine
Felodipine is a vasoselective dihydropyridine calcium channel blocker for essential hypertension treatment. This aromatic nitrogen-heterocycle classifies under HTS 2933.99.53.00 as a cardiovascular drug in bulk form. Imported as free base or specific polymorphs for extended-release formulations.
Nifedipine
Nifedipine is the prototype dihydropyridine calcium channel blocker used for angina and hypertension. This nitro-substituted aromatic heterocycle with nitrogen hetero-atoms classifies under HTS 2933.99.53.00. Bulk API imported under nitrogen atmosphere due to light sensitivity.
Nimodipine
Nimodipine is a lipophilic 1,4-dihydropyridine indicated for cerebral vasospasm prevention post-subarachnoid hemorrhage. As a nitrogen-heterocyclic cardiovascular drug, it falls under HTS 2933.99.53.00. Imported as oily liquid or powder for IV and oral formulations.
Pravastatin Sodium
Pravastatin sodium, a hydrophilic HMG-CoA reductase inhibitor, lowers LDL cholesterol in cardiovascular disease prevention. Its complex nitrogen-heterocyclic structure qualifies under HTS 2933.99.53.00 as a cardiovascular drug. Sodium salt form imported as spray-dried amorphous powder.
Clopidogrel Bisulfate
Clopidogrel bisulfate, a thienopyridine P2Y12 inhibitor, prevents thrombotic events in cardiovascular patients. This aromatic nitrogen-heterocycle classifies under HTS 2933.99.53.00 as a cardiovascular antiplatelet drug. Form I crystalline powder imported for tablet manufacture.