2933.19.04.00 - Aminomethylphenylpyrazole (Phenylmethylaminopyrazole); and 3-Methyl-1-(p-tolyl)-2-pyrazolin-5-one (p-Tolyl methyl pyrazolone)

This HTS category, 2933.19.04.00, specifically covers Aminomethylphenylpyrazole (also known as Phenylmethylaminopyrazole) and 3-Methyl-1-(p-tolyl)-2-pyrazolin-5-one (also known as p-Tolyl methyl pyrazolone). These are organic chemical compounds characterized by the presence of a pyrazole ring, which is a five-membered heterocyclic ring containing two adjacent nitrogen atoms. The specific substituents and their positions on the pyrazole ring define the precise chemical entities falling under this heading.

Distinguishing this category from its siblings, such as 2933.19.08.00, 2933.19.15.00, and 2933.19.18.00, lies in the unique chemical structures of the named compounds. While all fall under aromatic or modified aromatic pyrazole derivatives, this particular subheading focuses on a distinct set of phenylpyrazole and tolyl pyrazolone compounds, differentiating them from other complex pyrazolone derivatives or specific pyrazolium salts found in the adjacent categories. The precise arrangement and type of substituents attached to the pyrazole nucleus are the primary classification criteria.

As this classification node represents a leaf node within the HTS, there are no further subdivisions. Therefore, the focus for classification purposes is on accurately identifying the presence and structure of Aminomethylphenylpyrazole and 3-Methyl-1-(p-tolyl)-2-pyrazolin-5-one. Importers and exporters should consult detailed chemical specifications and analytical data to confirm that the goods precisely match the descriptions provided in this subheading, ensuring correct duty assessment and compliance with import/export regulations.