💾 Data Updated: 2025 HTS Revision 30 • Last updated: November 24, 2025

9902.02.55 - (3E)-4-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-3-buten-2-one (CAS No. 79-77-6) (provided for in subheading 2914.23.00)

Details

FieldValue
Unit of QuantityN/A
General Rate of DutyFree
Special Rate of DutyNo change
Column 2 Rate of DutyNo change
Quota QuantityN/A
Additional DutiesN/A

Overview

This HTS code, 9902.02.55, specifically classifies (3E)-4-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-3-buten-2-one, also known by its CAS number 79-77-6. This compound is a specific chemical substance that, for temporary import or trade agreement purposes, is subject to special provisions. Its inclusion under Chapter 99 signifies that it is subject to measures beyond standard tariff classifications, potentially related to import restrictions or temporary modifications enacted under trade legislation.

While HTS Chapter 99 covers a broad range of temporary legislation and special provisions, this particular code is highly specific, targeting a single chemical entity. It is crucial to understand that HTS codes under Chapter 99 are distinct from the standard goods classifications found in Chapters 1 through 97. Unlike sibling categories within Chapter 99 that might cover different types of temporary restrictions or goods subject to unique trade policies, 9902.02.55 is reserved exclusively for the aforementioned chemical compound.

As a leaf node, this classification does not possess subcategories. Its purpose is to provide a precise entry point for the described chemical under specific temporary legislative measures. Therefore, classification within 9902.02.55 is contingent upon the identity of the imported chemical, its CAS number, and the prevailing temporary trade regulations or agreements in effect at the time of importation, as indicated by its reference to subheading 2914.23.00.

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