9902.05.33 - (Triethoxysilyl)methyl anthracene-9-carboxylate (CAS No. 313482-99-4) (provided for in subheading 2931.90.30)

This HTS classification, 9902.05.33, pertains to a specific chemical compound: (Triethoxysilyl)methyl anthracene-9-carboxylate, identified by CAS No. 313482-99-4. This entry falls under Chapter 99, which encompasses temporary legislation, modifications to trade agreements, and specific import restrictions. The inclusion of this compound within Chapter 99 signifies that its classification is subject to special or temporary provisions, likely overriding its standard classification under Chapter 29 (Organic Chemicals) where it is otherwise provided for in subheading 2931.90.30.

As this is a leaf node within Chapter 99, it does not have further subdivisions. Its presence at this level signifies a distinct, specific provision for this particular chemical. Unlike its numerous sibling categories within the broader HTS structure which cover a vast array of goods from live animals to manufactured products, this entry is highly specialized, focusing solely on the aforementioned chemical compound and any associated temporary import regulations or duties that may apply. The classification relies on the precise identification of the chemical by name and CAS number to ensure accurate tariff application.