4-Nitrophenyl Chloroformate
4-Nitrophenyl chloroformate is a reactive chloroformate ester used in peptide synthesis, classified under HTS 2942.00.50.00 as 'other' organic compounds. This compound features both nitroaromatic and chloroformate functionalities essential for bioconjugation applications.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified as a simple chloroformate ester
Chapter notes classify chloroformates with their parent alcohol functionality under heading 2909.
If for the corresponding thiocarbonate analog
Thioesters and thiocarbonates classify under heading 2920 for esters of other inorganic acids.
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Import Tips & Compliance
• Ship under inert atmosphere with stabilizer; include stability data showing <5% decomposition during transit
• Classify as UN 2745 (chloroformates, corrosive) with proper dangerous goods declaration
• Provide synthetic route documentation to distinguish from pesticide intermediates
Related Products under HTS 2942.00.50.00
Anhydrotetracycline Hydrochloride
Anhydrotetracycline hydrochloride is a chemically defined organic compound derived from tetracycline antibiotics, classified under HTS 2942.00.50.00 as 'other' organic compounds not specifically covered elsewhere in Chapter 29. It contains complex heterocyclic structures with nitrogen and oxygen functions, fitting the chapter's scope for separate organic compounds.
N-Acetyl-DL-tryptophan
N-Acetyl-DL-tryptophan is an acetylated derivative of the amino acid tryptophan, classified under HTS 2942.00.50.00 as an 'other' organic compound. This synthetic amino acid derivative features both amine and carboxylic acid functions with an indole ring, falling outside specific amino acid headings.
6-Aminopenicillanic Acid
6-Aminopenicillanic acid (6-APA) is the core nucleus for semi-synthetic penicillin antibiotics, classified under HTS 2942.00.50.00 as 'other' organic compounds. This beta-lactam compound serves as a key pharmaceutical intermediate with a characteristic four-membered ring structure.
Saccharin Impurity A (o-Sulfamoylbenzoic Acid)
o-Sulfamoylbenzoic acid, known as Saccharin Impurity A, is a key intermediate in saccharin synthesis and a chemically defined organic compound under HTS 2942.00.50.00. It features both sulfonic acid and carboxylic acid functionalities on a benzene ring.
Benzoyl Peroxide (Pure)
Benzoyl peroxide in pure form (>98%) is classified under HTS 2942.00.50.00 as an 'other' organic peroxide not covered by specific bleaching agent provisions. This diacyl peroxide serves as a free radical initiator in polymer chemistry.
Triphenylmethyl Chloride (Trityl Chloride)
Triphenylmethyl chloride (trityl chloride) is a protecting group reagent for nucleosides and peptides, classified under HTS 2942.00.50.00 as 'other' organic compounds. This triarylmethyl halide is essential in oligonucleotide synthesis.