Ergosterol (Provitamin D2 Base)
Ergosterol, a yeast/fungi sterol, serves as the base provitamin D2 precursor requiring irradiation for vitamin activation. Imported under HTS 2936.90.0110 as a purified provitamin for synthetic vitamin D2 production in supplements. Meets Chapter 29 criteria for chemically defined organic compounds with vitamin precursor function.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If irradiated to ergocalciferol
Active vitamin D2 form classifies under dedicated vitamin D2 heading per numerical order rule.
If vegetable-origin coloring extract
Crude fungal coloring matters of natural origin fall under Chapter 32 vegetable extracts.
If in bulk agricultural byproducts
Yeast fermentation byproducts with incidental ergosterol classify as animal/veg fertilizers.
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Import Tips & Compliance
• Fungal origin requires GMO-free certification; provide fungal strain documentation for FDA review
• Specify crystalline purity (>95%) to qualify as separate compound vs. natural concentrate
• Monitor for anti-dusting agents per Chapter 29(g); additions cannot imply specific end-use
Related Products under HTS 2936.90.01.10
Provitamin D2 (Ergosterol Irradiation Product)
Provitamin D2, derived from ergosterol through ultraviolet irradiation, is a sterol precursor that converts to vitamin D2 (ergocalciferol) upon further exposure to light. It falls under HTS 2936.90.0110 as a provitamin, chemically defined organic compound used primarily in vitamin production for nutritional supplements. This synthetic reproduction of a natural provitamin is essential for fortifying foods and pharmaceuticals.
Provitamin A (Beta-Carotene Precursor)
Beta-carotene serves as the primary provitamin A, a carotenoid that the body converts to retinol (vitamin A) as needed. Classified under HTS 2936.90.0110 as a provitamin, this chemically defined compound is synthetically produced for use in fortified foods, supplements, and cosmetics. It meets Chapter 29 requirements for separate organic compounds used primarily as vitamin precursors.
7-Dehydrocholesterol (Provitamin D3)
7-Dehydrocholesterol is the natural provitamin D3 found in animal skin, which upon UVB exposure converts to cholecalciferol (vitamin D3). This synthetic or concentrated form is imported under HTS 2936.90.0110 as a provitamin for pharmaceutical and supplement production. It qualifies as a separate chemically defined organic compound per Chapter 29 notes.
Beta-Cryptoxanthin Provitamin A
Beta-cryptoxanthin is a xanthophyll carotenoid functioning as provitamin A, convertible to retinol in vivo. This synthetic isolate classifies under HTS 2936.90.0110 as a provitamin derivative used primarily for vitamin A activity in nutritional products. It adheres to Chapter 29's chemical definition for provitamin compounds.