3003.39.10.00 - Artificial mixtures of natural hormones

This HTS category, 3003.39.10.00, specifically covers artificial mixtures containing hormones or other products of heading 2937, which are intended for therapeutic or prophylactic uses. Crucially, these mixtures are not presented in measured doses or in forms suitable for retail sale, placing them in a bulk or intermediate stage of pharmaceutical preparation. The "artificial mixtures" designation differentiates these from purely natural hormone preparations, implying the use of synthetic or processed hormonal substances in their formulation.

Within this level, category 3003.39.10.00 distinguishes itself from its sibling, 3003.39.50.00, by its precise composition. While both fall under "Other" medicaments containing hormones not for retail sale, the .10.00 code is dedicated to *artificial* mixtures. This implies that if a mixture contains a significant synthetic component or has undergone artificial processing to achieve its hormonal activity, it would fall under this specific sub-heading. The sibling category, 3003.39.50.00, likely encompasses other forms of mixtures that do not fit the "artificial" descriptor, or perhaps those where the hormonal component is less prominent or derived differently.

As a leaf node, this HTS code has no further subcategories. Therefore, classification decisions at this level rely heavily on the precise nature of the mixture and the origin of its hormonal constituents. Importers must carefully consider whether the hormonal components are naturally derived and unaltered, or if they have been synthesized or artificially processed, to ensure accurate classification under 3003.39.10.00. The lack of retail packaging remains a key criterion, indicating these are intermediate goods for further pharmaceutical processing or large-scale distribution.