2939.49.03.00 - Other

This category, HTS 2939.49.03.00, encompasses alkaloids derived from ephedra and their salts, ethers, esters, and other derivatives that are not specifically listed under preceding subheadings within the 2939.4 category. It serves as a residual classification for ephedra-related alkaloids and their modifications that do not fall into the more narrowly defined groups of ephedrine, pseudoephedrine, cathine, norephedrine, or levometamfetamine and its related compounds.

Crucially, this "Other" classification distinguishes itself by excluding the aforementioned specific substances. For instance, if a product is identified as ephedrine or its salt, it would be classified under 2939.41.00.00. Similarly, pseudoephedrine, cathine, norephedrine, and levometamfetamine, along with their respective salts, have dedicated subheadings. This current classification is therefore reserved for any other chemical compounds meeting the criteria of being an alkaloid of ephedra or a derivative thereof that does not fit any of the enumerated sibling categories.

As this is a leaf node, there are no further subcategories. Classification within this code is determined by the specific chemical identity of the substance and whether it is recognized as an ephedra alkaloid or a derivative thereof, while simultaneously confirming it is not classifiable under the more specific sibling codes. This ensures that all ephedra-related alkaloids and their derivatives are appropriately accounted for within the HTS.