The key distinction is whether the product is standardized and traded primarily for its vitamin activity. A rosehip powder standardized to a specific ascorbic acid content and sold as a vitamin source would typically fall under 293690, while a rosehip extract marketed for its polyphenol content might be classified as a plant extract under Chapter 13 or elsewhere. The intended use, labeling, and degree of standardization all factor into the correct classification, and consultation with a licensed customs broker is advisable for borderline cases.

Not necessarily. Synthetic beta-carotene used as a food colorant may be classified under Chapter 32 (synthetic organic coloring matter), while natural beta-carotene concentrates intended as a Vitamin A precursor in dietary supplements or feed are more likely to fall under 2936900110. The classification turns on the primary commercial function and the form of the product, so importers should document intended use and consult a customs broker when the product straddles multiple potential headings.