9902.04.23 - N-[3-(Dimethylamino)propyl]-2-methylacrylamide (CAS No. 5205-93-6) (provided for in subheading 2924.19.11)

This HTS category, 9902.04.23, covers a specific chemical compound identified as N-[3-(Dimethylamino)propyl]-2-methylacrylamide (CAS No. 5205-93-6). This designation falls under Chapter 99, which is reserved for temporary legislation, temporary modifications proclaimed pursuant to trade agreements, and additional import restrictions proclaimed under Section 22 of the Agricultural Adjustment Act. The reference to subheading 2924.19.11 indicates that the primary classification of this chemical under the general tariff schedule would likely be within the chapter for organic compounds, specifically amide functional groups.

As a leaf node within the HTS database, this category does not have further subdivisions. Its specificity lies in identifying a particular chemical by its name and CAS number, signaling a targeted import control or duty modification. This contrasts with its sibling categories, which typically represent broader classes of goods such as live animals (Chapters 01-05) or various manufactured products across other chapters. The inclusion in Chapter 99 signifies that this specific chemical's import treatment is subject to special, likely temporary, provisions distinct from its standard classification.