2941.90.10 - Natural

This HTS category, 2941.90.10, specifically encompasses "Natural" antibiotics that do not fall under the more specific categories of antibiotics listed elsewhere in the 2941 heading. It serves as a residual classification for naturally derived antimicrobial substances used in medical, veterinary, or agricultural applications. The key defining characteristic for inclusion here is the origin of the antibiotic: it must be produced by a living organism, such as bacteria, fungi, or plants, and not be synthetically manufactured or semi-synthetically derived.

This category is distinguished from its sibling categories by its broad scope covering all natural antibiotics not otherwise specified. For instance, while specific classes of antibiotics might be detailed in other subheadings, this entry acts as a catch-all for natural compounds exhibiting antibiotic activity that do not fit those more granular definitions. The focus remains on the inherent biological source of the antimicrobial agent.

Within this category, further distinctions are made based on specific types of natural antibiotics. The subcategories, 2941.90.10.10 for "Aminoglycoside antibiotics" and 2941.90.10.50 for "Other" natural antibiotics, allow for more precise classification. The aminoglycoside subclass captures naturally occurring members of this group, while the "Other" subcategory serves as a residual for all other natural antibiotics not fitting the aminoglycoside description, ensuring comprehensive coverage of naturally sourced antimicrobial agents.