2924.21.04.00 - 3-(p-Chlorophenyl)-1,1-dimethylurea (Monuron)

This HTS subheading specifically classifies **3-(p-Chlorophenyl)-1,1-dimethylurea**, commonly known as Monuron. Monuron is an aromatic urea derivative characterized by the presence of a chlorine atom at the para position of the phenyl ring and two methyl groups attached to one of the urea nitrogen atoms. It falls under the broader category of aromatic urea pesticides.

This classification is distinguished from its siblings by the specific chemical structure of Monuron. For instance, 2924.21.08.00 covers Fluometuron, which differs by featuring a trifluoromethyl group on the phenyl ring instead of a chlorine atom. Similarly, 2924.21.12.00 classifies a urea derivative with a methylcyclohexyl substituent. The residual category, 2924.21.16.00, is reserved for other aromatic urea pesticides not otherwise specified.

As this subheading represents a leaf node in the HTS classification, there are no further subcategories. Classification at this level is determined by the precise chemical identity of the aromatic urea compound, with specific substituents on the phenyl ring and urea structure being the key discriminators. The use as a pesticide is a defining characteristic of this group of compounds.