9902.05.34 - 4-Chloro-2-fluoro-3-methoxyphenylboronic acid (CAS No. 944129-07-1) (provided for in subheading 2931.90.30)

HTS Code 9902.05.34 pertains to temporary modifications and special provisions for specific chemical compounds. In this instance, it covers 4-Chloro-2-fluoro-3-methoxyphenylboronic acid, identified by CAS Number 944129-07-1. This classification is made pursuant to temporary legislation or trade agreement proclamations, indicating a specific, often time-limited, regulatory treatment for this particular substance. Its inclusion here signifies that while its primary classification may be found elsewhere in the tariff schedule (specifically, under subheading 2931.90.30 for other organo-inorganic compounds), it is subject to additional or modified rules under Chapter 99.

Unlike the broader categories found in the main HTS chapters, such as live animals or primary agricultural products (e.g., HTS Codes 0101 through 0105), this Chapter 99 provision is highly specific. It does not cover general classes of goods but rather targets particular items for special tariff or import treatment. The distinction lies in the purpose of Chapter 99, which is to implement temporary legislative changes, enforce trade agreement provisions, or impose specific import restrictions that override or supplement the general rules of other chapters.

As a leaf node, HTS Code 9902.05.34 does not have further subcategories. Its function is to directly apply a specific temporary rule to the designated chemical compound. Therefore, classification under this code hinges on the precise identification of the imported substance as 4-Chloro-2-fluoro-3-methoxyphenylboronic acid and the understanding that it falls under a temporary legislative or trade agreement measure. Importers must verify the current status of this provision, as temporary modifications are subject to change.