2934.99.03.00 - 2-Acetylbenzo(b)thiophene; 3-Methylene-7-(2-phenoxyacetamido)- cephan-4-carboxylic acid, p-nitrobenzyl ester, 1-oxide; and Naphth[1,2-d]-[1,2,3]-oxadiazole-5-sulfonic acid and its sodium salt 🖩
Details
| Field | Value |
|---|---|
| Unit of Quantity | kg |
| General Rate of Duty (Column 1 - General) | Free |
| Special Rate of Duty (Column 1 - Special) | N/A |
| Column 2 Rate of Duty | 15.4¢/kg + 52% |
| Quota Quantity | N/A |
| Additional Duties | N/A |
Overview
This HTS code, 2934.99.03.00, encompasses a specific selection of complex heterocyclic organic compounds. Notably, it includes 2-Acetylbenzo(b)thiophene, a sulfur-containing aromatic heterocyclic compound. It also covers 3-Methylene-7-(2-phenoxyacetamido)-cephan-4-carboxylic acid, p-nitrobenzyl ester, 1-oxide, which is a cephalosporin derivative characterized by its beta-lactam ring and significant structural modifications. Finally, this classification includes Naphth[1,2-d]-[1,2,3]-oxadiazole-5-sulfonic acid and its sodium salt, a fused heterocyclic system containing nitrogen and oxygen. These compounds are generally used as intermediates in pharmaceuticals or in specialized chemical applications.
To distinguish this category from its siblings, it's important to note the specific chemical structures and functional groups present. For instance, while other codes in the 2934.99 series might cover other types of heterocyclic compounds, such as Mycophenolate mofetil (2934.99.01.00) or various thiadiazole and benzoxazole derivatives (2934.99.05.00), this particular code is reserved for the precisely listed substances. The presence of the specific fused naphthalene-oxadiazole system, the cephan derivative, and the acetylated benzothiophene are key differentiators.
As a leaf node within the HTS classification system, 2934.99.03.00 does not have further subcategories. Therefore, the classification of goods under this code relies on a precise match with the chemical names and descriptions provided. Importers and exporters must ensure that the imported or exported product is chemically identical to one of the listed compounds to correctly utilize this tariff item. The absence of subdivisions means that any variations or related compounds not explicitly named would likely fall under a different, broader or more specific, classification.