2933.19.08.00 - 3-(5-Amino-3-methyl-1H-pyrazol-1-yl)- benzenesulfonic acid; Amino-J-pyrazolone; 3-Amino-1-(2,4,6-trichlorophenyl)-5- pyrazolone; 3-Carboxy-1,4-sulfophenylpyrazol-5-one; 4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1- yl)benzenesulfonic acid; 1-(m-Chlorophenyl)-3-methyl-2-pyrazolin- 5-one;p-Chloropyrazolone; 1-(2',5'-Dichlorophenyl)-3-methyl-2- pyrazolin-5-one; 1-(o-Ethylphenyl)-3-methyl-2-pyrazolin- 5-one; 5-Imino-3-methyl-1-phenylpyrazole; 5-Imino-3-methyl-1-(m-sulfophenyl)- pyrazole; 2,4-Methylcarboxypyrazolic acid; Methylphenylpyrazolone; and Sulfinpyrazone

This HTS category, 2933.19.08.00, encompasses a specific group of aromatic or modified aromatic compounds featuring an unfused pyrazole ring. The listed chemicals, such as 3-(5-Amino-3-methyl-1H-pyrazol-1-yl)-benzenesulfonic acid and various substituted phenylpyrazolones, are characterized by the presence of a pyrazole ring directly attached to an aromatic system (like a benzene ring) and often include sulfonic acid or other functional groups. These compounds frequently serve as intermediates in the synthesis of dyes, pharmaceuticals, or other specialized organic chemicals.

This particular classification distinguishes itself from its sibling categories by the specific nature of the substituents on the pyrazole ring and the attached aromatic moiety. For example, while 2933.19.04.00 covers aminomethylphenylpyrazoles and tolyl methyl pyrazolones, and 2933.19.15.00 includes the specific quaternary ammonium salt difenzoquat methyl sulfate, this code is for a broader array of pyrazole derivatives with aromatic attachments, excluding the specific structures found in those adjacent codes. The inclusion of sulfonic acid groups and particular halogen substitutions are common features that define the scope of this sub-heading.

As this is a leaf node within the HTS, there are no further subcategories for this specific code. Classification under 2933.19.08.00 relies on matching the specific chemical name or structure of the imported or exported good to one of the named compounds or to a substance that falls under the general description of aromatic or modified aromatic heterocyclic compounds with an unfused pyrazole ring not specifically listed in other "other" categories at this level. Careful examination of the chemical structure and functional groups is paramount for accurate classification.