4-Nitro-1-phenyl-1H-pyrazole
A nitro-substituted aromatic pyrazole with unfused ring structure, falling under HTS 2933.19.37.00 as specified in additional U.S. note 3 to section VI. Nitro groups on pyrazoles are classified with the parent heterocycle per chapter notes, used in dye and pharmaceutical applications.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported primarily as nitroaromatic without pyrazole mention
Nitro derivatives of aromatic amines sometimes classify under nitrogen function headings.
If for non-aromatic or modified non-aromatic pyrazoles
Loss of aromaticity moves compound to different pyrazole subheading.
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Import Tips & Compliance
• Nitro compounds require DOT hazardous material shipping papers for Class 4.1 oxidizer risk
• Provide reference to additional U.S. note 3 in commercial invoice for CBP verification
• Avoid anti-dusting agents that could trigger reclassification under chapter note (g)
Related Products under HTS 2933.19.37.00
3-Methyl-1-phenyl-1H-pyrazole-5-carboxylic acid
This is an aromatic pyrazole derivative featuring a pyrazole ring substituted with a phenyl group and a carboxylic acid function at the 5-position. It falls under HTS 2933.19.37.00 as a chemically defined heterocyclic compound containing an unfused pyrazole ring that is aromatic or modified aromatic, specifically listed in additional U.S. note 3 to section VI. Such compounds are typically used as intermediates in pharmaceutical synthesis.
1-(2,6-Dichlorophenyl)-1H-pyrazole-4-carbaldehyde
An aromatic pyrazole compound with a dichlorophenyl substituent and aldehyde functionality, making it a key intermediate for agrochemical synthesis. Classified under HTS 2933.19.37.00 due to its unfused pyrazole ring structure that qualifies under additional U.S. note 3 to section VI for specific aromatic pyrazoles. The heterocyclic nitrogen atoms define its primary classification.
Ethyl 3-methyl-1H-pyrazole-5-carboxylate
This ester of a pyrazole carboxylic acid features an unfused aromatic pyrazole ring, classified specifically under HTS 2933.19.37.00 per additional U.S. note 3 to section VI. The ester follows the acid's classification per chapter notes, used primarily as a pharmaceutical intermediate.
1-Benzyl-3,5-dimethyl-1H-pyrazole
An N-benzyl substituted dimethylpyrazole that is aromatic and listed under additional U.S. note 3 to section VI, hence HTS 2933.19.37.00. This ligand precursor for coordination chemistry maintains pyrazole as principal characteristic.