9902.05.51 - (4''R)-4''-Deoxy-4''-(methylamino)avermectin b1 benzoate (CAS No. 155569-91-8) (provided for in subheading 3824.99.92 or 2932.20.50)

This HTS code, 9902.05.51, designates a specific temporary import classification for (4''R)-4''-Deoxy-4''-(methylamino)avermectin b1 benzoate, identified by CAS Number 155569-91-8. This substance is a derivative of avermectin, commonly utilized in veterinary medicine as an antiparasitic agent. Its classification under Chapter 99 indicates it is subject to temporary legislative measures or restrictions, often related to trade agreements or agricultural adjustments as proclaimed under Section 22 of the Agricultural Adjustment Act.

Given that this is a leaf node, there are no subcategories to introduce. Instead, the focus is on understanding the precise nature of the good. The provided description explicitly links this classification to potential alternative headings under Chapter 38 (Miscellaneous chemical products) or Chapter 29 (Organic chemicals), specifically 3824.99.92 or 2932.20.50, indicating that this temporary classification is intended to manage or monitor the importation of this specific chemical compound, which might otherwise fall under a different permanent heading.

Unlike the broad categories of live animals and poultry found at the root of the HTS database (e.g., 0101 through 0105), this classification is highly specific to a chemical compound. It highlights the importance of specialized temporary provisions within the HTS system, which can be invoked for various policy reasons, including managing the import of sensitive or regulated substances. The presence of this code signifies that importers must adhere to the specific requirements and potential limitations associated with the temporary legislation governing this particular avermectin derivative.