2922.50.13.00 - Isoetharine hydrochloride; Isoxsuprine hydrochloride; Nylidrin hydrochloride; Phenylephrine hydrochloride; Salbutamol (Albuterol); and Terbutaline sulfate

This HTS classification covers specific aromatic amino-compounds with oxygen function that are primarily used as pharmaceutical drugs. The listed substances – Isoetharine hydrochloride, Isoxsuprine hydrochloride, Nylidrin hydrochloride, Phenylephrine hydrochloride, Salbutamol (Albuterol), and Terbutaline sulfate – are active pharmaceutical ingredients (APIs) with well-defined therapeutic applications. Their classification here is based on their chemical structure as aromatic compounds containing both amine and hydroxyl groups, and importantly, their recognized status as drugs.

The distinguishing feature of this subcategory lies in its focus on these particular named drug substances, as opposed to the broader "Other" sibling category, which would encompass other aromatic amino-compounds with oxygen function not specifically listed or not intended for medicinal use. This level of specificity ensures that these commonly recognized bronchodilators and vasoconstrictors are accurately categorized for customs purposes.

As this node is a leaf node within the HTS database, there are no further subcategories. Therefore, the classification concludes at this point, with the HTS code 2922.50.13.00 precisely identifying these six pharmaceutical compounds. Classification of these substances at this level relies on their precise chemical identity and established medicinal application.