Alfacalcidol (1α-Hydroxyvitamin D3)
Alfacalcidol is a hydroxylated Vitamin D3 prodrug used primarily as a vitamin derivative for renal osteodystrophy treatment. It falls under HTS 2936.29.50.20 as a chemically defined Vitamin D derivative meeting chapter requirements for provitamins and vitamin intermediates. Supplied in pure form for oral solution manufacturing.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If declared primarily as parathyroid hormone regulator
Functional classification as hormone rather than vitamin shifts to later Chapter 29 heading.
If in aqueous solution for injection prep
Solutions exceeding safety/transport solvent limits classify as chemical preparations.
If part of glandular extracts
Natural hormone extracts containing vitamin D derivatives fall under glandular therapeutics.
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
• DEA watch list monitoring not required but potency declaration essential for accurate duty assessment
• Include toxicological profile if purity <99.5% to address safety concerns in Chapter notes
• Avoid bulk packaging over 25kg drums which trigger additional hazardous material declarations
Related Products under HTS 2936.29.50.20
Cholecalciferol (Vitamin D3)
Cholecalciferol, also known as Vitamin D3, is a fat-soluble secosteroid derived from 7-dehydrocholesterol and reproduced synthetically for nutritional supplements. It falls under HTS 2936.29.50.20 as a unmixed vitamin D derivative used primarily as a vitamin to support calcium absorption and bone health. This chemically defined organic compound is supplied in pure form for pharmaceutical and dietary applications.
Calcipotriene (Vitamin D3 Analog)
Calcipotriene is a synthetic Vitamin D3 derivative used primarily for its vitamin-like hormonal effects in psoriasis treatment. Under HTS 2936.29.50.20, it qualifies as a Vitamin D derivative per Chapter notes allowing hormone analogues used primarily as vitamins. Provided as high-purity powder for topical pharmaceutical formulations.
Vitamin D3 500,000 IU/g Powder
High-potency Vitamin D3 powder standardized at 500,000 International Units per gram, used primarily as a vitamin in supplement manufacturing. Classified under HTS 2936.29.50.20 as cholecalciferol derivative meeting purity standards for unmixed vitamins. The powder form contains minimal stabilizer per Chapter 29 note (f).
Paricalcitol (19-nor-1α,25-Dihydroxyvitamin D2)
Paricalcitol is a synthetic Vitamin D analog used primarily as a vitamin derivative for secondary hyperparathyroidism. HTS 2936.29.50.20 covers this chemically defined compound as it functions primarily as a vitamin per Chapter 29 hormone note (b). Bulk API form for IV and oral pharmaceuticals.
Dihydrotachysterol (Vitamin D4 Analog)
Dihydrotachysterol is a partially activated Vitamin D derivative used primarily for calcium regulation in hypocalcemia treatment. It qualifies under HTS 2936.29.50.20 as a Vitamin D derivative that is a separate organic compound used as a vitamin. Historical use in pharmaceutical compounding.
Calcitetrol (Vitamin D Derivative)
Calcitetrol represents specialized Vitamin D derivatives used in research and niche therapeutics, functioning primarily as vitamins. Covered by HTS 2936.29.50.20 for unmixed Vitamin D compounds meeting Chapter 29 chemical definition requirements. High-purity research chemical grade.