9902.06.51 - 4-Amino-6-tert-butyl-3-methylthio-1,2,4-triazin-5(4H)-one (Metribuzin) (CAS No. 21087-64-9) (provided for in subheading 2933.69.60)

This HTS category, 9902.06.51, specifically classifies 4-Amino-6-tert-butyl-3-methylthio-1,2,4-triazin-5(4H)-one, also known by its common name Metribuzin (CAS No. 21087-64-9). This entry falls under Chapter 99, which pertains to temporary legislation, temporary modifications proclaimed pursuant to trade agreements, and additional import restrictions proclaimed pursuant to Section 22 of the Agricultural Adjustment Act. The inclusion of "provided for in subheading 2933.69.60" indicates that while Metribuzin is a specific chemical compound, this 9900 series code imposes special or temporary restrictions on its importation that supersede the general classification under Chapter 29.

As a leaf node within the HTS, this category does not have further subcategories. Its significance lies in the specific import controls or temporary measures applied to Metribuzin, differentiating it from its broader classification under Chapter 29. Unlike sibling categories within the HTS Database Root that cover live animals, this entry pertains to a manufactured chemical product. The purpose of this classification is to track and potentially regulate the import volume or conditions of Metribuzin, often due to agricultural or trade policy considerations.