2936.90.01 - Other, including provitamins and natural concentrates

This HTS category, "Other, including provitamins and natural concentrates," within Heading 2936, encompasses vitamins and their derivatives that are not explicitly classified as unmixed vitamins. This primarily includes provitamins, which are compounds the body can convert into vitamins, and natural concentrates derived from biological sources containing vitamin activity. It also covers intermixtures of provitamins and vitamins, or their derivatives, regardless of whether they are presented in a solvent.

It is important to distinguish this category from its sibling, "Vitamins and their derivatives, unmixed." The sibling category is reserved for pure, single vitamin substances or their derivatives presented without any other components. In contrast, this "Other" category captures mixtures, natural extracts with vitamin content, and precursors to vitamins that do not meet the definition of an unmixed vitamin.

The subcategories within "Other, including provitamins and natural concentrates" further refine this classification. "Provitamins" specifically addresses compounds like beta-carotene, which the body synthesizes into Vitamin A. "Other" serves as a residual category for any remaining products within Heading 2936 that are not unmixed vitamins or identifiable provitamins, but still fall under the broad scope of vitamin-related substances and their natural concentrates.