9902.07.40 - Propan-2-yl (2R)-2-{((R)-({(2R,3R,4R,5R)-4-chloro- 5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-3-hydroxy-4- methyloxolan-2-yl}methoxy)(phenoxy)phos- phoryl)amino}propanoate (Uprifosbuvir) (CAS No.1496551-77-9) (provided for in subheading 2934.99.30 or 2934.99.39)

This HTS code, 9902.07.40, specifically classifies Uprifosbuvir, identified by CAS No. 1496551-77-9. Uprifosbuvir is a complex chemical compound, an organic molecule with a specific stereochemistry, defined by its IUPAC name Propan-2-yl (2R)-2-{((R)-({(2R,3R,4R,5R)-4-chloro- 5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-3-hydroxy-4-methyloxolan-2-yl}methoxy)(phenoxy)phos- phoryl)amino}propanoate. Its primary function, within the context of its primary classification, relates to pharmaceutical applications.

As a specific provision within Chapter 99, this code represents a temporary legislation or modification, indicating that its classification under this heading may be subject to change or is for a specific purpose beyond the general classification of chemicals. It is important to note that this HTS code is provided for in subheading 2934.99.30 or 2934.99.39, which cover other heterocyclic compounds. This means that while Uprifosbuvir is a specific item, its underlying chemical structure falls within the broader categories of Chapter 29.

This category is a leaf node, meaning it has no further subcategories. Its specificity is such that it represents a single, distinct compound with a unique CAS number. Classification under 9902.07.40 is therefore highly precise, intended to track the import or export of this particular substance under specific trade or legislative provisions, distinct from other chemical compounds that may share some structural similarities but are not Uprifosbuvir.