2941.10.50.00 - Other

This HTS category, 2941.10.50.00, encompasses penicillins and their derivatives possessing a penicillanic acid structure, along with their corresponding salts, that are not specifically listed under preceding subheadings. It serves as a residual category for such antibiotics, capturing those that do not fit into more precisely defined classifications within the penicillin group.

The distinction from sibling category 2941.10.30.00 lies in the specific enumeration of active pharmaceutical ingredients in the latter. While 2941.10.30.00 explicitly names carfecillin, cloxacillin, dicloxacillin, flucloxacillin, and oxacillin and their sodium salts, this category (2941.10.50.00) is for all other penicillins and their derivatives that share the core penicillanic acid structure but are not individually itemized.

As this is a leaf node, there are no further subcategories to introduce. Classification within this heading relies on confirming the presence of the penicillanic acid structure and ensuring the specific penicillin derivative or salt is not already accounted for in more detailed preceding subheadings. This ensures comprehensive coverage of all penicillin-based antibiotics within Chapter 29.