2939.19.50.00 - Other

This HTS category, "2939.19.50.00 - Other," encompasses alkaloids derived from opium and their salts, ethers, esters, and other derivatives that are not specifically classified elsewhere within the "Other" subcategory. This residual classification is reserved for compounds that, while originating from or related to opium alkaloids, do not fall under more specific headings. Practical classification relies on the chemical structure and the specific derivative formed from the opium alkaloid base.

This category serves as a catch-all for opium alkaloid derivatives not otherwise specified. It is distinguished from its sibling category, "2939.19.20.00 - Synthetic," which exclusively covers opium alkaloids or their derivatives that are produced through synthetic chemical processes. This "Other" classification therefore focuses on any remaining opium alkaloid derivatives, which may include natural products or semi-synthetic variations not explicitly addressed by other codes.

As a leaf node within the HTS structure, this category has no further subcategories. Classification into this specific code will depend on whether a particular opium alkaloid derivative meets the definition of an opium alkaloid or its salt, ether, ester, or other derivative, and has not been classified under any more precise subheading or sibling category. Customs officers will analyze the chemical composition and origin to ensure correct application.