9902.07.48 - 2-Amino-3-cyanothiophene (CAS No. 4651-82-5) (provided for in subheading 2934.99.90)

This HTS category, 9902.07.48, specifically covers the chemical compound 2-Amino-3-cyanothiophene, identified by CAS Number 4651-82-5. This classification falls under Chapter 99 of the Harmonized Tariff Schedule, which is reserved for temporary legislation and special provisions, indicating that this substance is subject to specific, time-limited import regulations or modifications. The notation "(provided for in subheading 2934.99.90)" highlights its underlying classification within the permanent HTS structure, acknowledging that while it is being addressed under temporary provisions, its fundamental nature is that of a heterocyclic compound.

As a leaf node within Chapter 99, this category does not have further subcategories. Its purpose is to address the specific import conditions or restrictions applied to 2-Amino-3-cyanothiophene that are not covered by its standard classification under Chapter 29. The existence of this separate HTS code underscores the importance of monitoring temporary trade legislation and special tariff provisions when importing or exporting this particular chemical, as its treatment may differ from other compounds within the broader 2934.99.90 subheading due to specific trade agreements or policy actions.