1702.90 - Other, including invert sugar and other sugar and sugar syrup blends containing in the dry state 50 percent by weight of fructose:

This HTS category, 1702.90, encompasses "Other" sugars and sugar syrup blends, notably including invert sugar, that contain 50 percent or more by weight of fructose in their dry state. This classification serves as a residual category for sugars not specifically detailed in preceding headings of Chapter 17. It is crucial for identifying sugar products with a high fructose content that fall outside the more specific classifications of lactose, maple sugar, glucose syrups with varying fructose percentages, and chemically pure fructose.

The primary distinction of 1702.90 lies in its fructose threshold. Unlike sibling categories such as 1702.30 and 1702.40 which specify lower fructose content (less than 20% and 20% to less than 50% respectively), this heading requires a dry weight fructose content of 50% or greater. Furthermore, it differentiates from 1702.50.00.00, which is exclusively for chemically pure fructose, by including blends and invert sugar.

The subcategories within 1702.90 allow for further refinement based on the origin of the sugars. The distinction between those "Derived from sugar cane or sugar beets" and "Other" provides an additional layer of classification, often relevant for trade agreements, import duties, or specific market regulations that differentiate based on the source of the raw materials. This granular approach ensures accurate categorization for a diverse range of sugar products.