2933.54.00.00 - Other derivatives of malonylurea (barbituric acid); salts thereof

This HTS category, 2933.54.00.00, encompasses derivatives of malonylurea, commonly known as barbituric acid, that are not specifically enumerated under sibling categories. This includes a broad range of compounds structurally related to barbituric acid, but which do not fall into the precise chemical structures of malonylurea itself, its salts, or the specific named barbiturate derivatives listed elsewhere. The classification hinges on the chemical structure featuring the malonylurea moiety, with variations in substituents that distinguish them from more specifically defined compounds.

To understand its scope, it's crucial to differentiate this category from its siblings. Category 2933.52 covers malonylurea (barbituric acid) and its salts directly. Category 2933.53.00.00 is reserved for a distinct list of individually named barbiturate drugs and their salts. Furthermore, category 2933.55.00.00 classifies another specific set of compounds including loprazolam and methaqualone derivatives. This category 2933.54.00.00 serves as a residual classification for other malonylurea derivatives that do not fit these more specific enumerations.

As a leaf node, this category does not have further subcategories. Therefore, classification into 2933.54.00.00 relies on a comprehensive analysis of the chemical structure to confirm it is a derivative of malonylurea (barbituric acid) and that it does not meet the criteria for any of the more specifically defined categories at the same level. The absence of a named drug status or specific structural relationships found in sibling categories is the primary determinant for goods falling under this heading.