9902.05.52 - Mixtures of gibberellic acid (CAS No. 77-06-5), gibberellin A4 (CAS No. 468-44-0) and gibberellin A7 (CAS No. 510-75-8) (provided for in subheading 2932.20.50)

This HTS classification, 9902.05.52, pertains to specific mixtures of plant growth regulators: gibberellic acid (CAS No. 77-06-5), gibberellin A4 (CAS No. 468-44-0), and gibberellin A7 (CAS No. 510-75-8). These substances are explicitly recognized and regulated under temporary legislation and special provisions within Chapter 99 of the Harmonized Tariff Schedule, which often addresses actions taken pursuant to trade agreements or agricultural adjustment acts. While the primary chemical compounds themselves might be classified under other chapters, this specific subheading designates them when imported as a mixture under particular trade or regulatory frameworks.

Unlike sibling categories that cover live animals or other commodity groups, this classification is unique in its focus on a specialized chemical mixture used in agriculture or horticulture. The key differentiator is the specific combination of gibberellin variants and their treatment under Section XXII and Chapter 99 provisions. This indicates that the importation of these particular mixtures is subject to distinct rules, restrictions, or reporting requirements beyond their basic chemical classification. The presence of the CAS numbers further ensures precise identification of the constituent components.

As a leaf node, HTS 9902.05.52 has no subcategories. This means that any importation fitting the description of a mixture of gibberellic acid, gibberellin A4, and gibberellin A7, as provided for in subheading 2932.20.50, will be directly classified here. The classification is definitive for these specified mixtures under the temporary measures outlined in Chapter 99, rather than being further broken down into smaller, more detailed subdivisions.