DChloramphenicol (Dextro Form)
D-threo isomer of chloramphenicol, the biologically active enantiomer used in synthesis of pure antibiotic derivatives. Classified HTS 2941.40.00.00 as chemically defined chloramphenicol derivative per chapter note 1(a). Intermediate for high-purity drug manufacturing.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If racemic DL-mixture
Specific D-isomer in 2941.40; mixtures of isomers fall to other antibiotics unless specified.
If classified by nitro function
Chapter note 3 prioritizes latest numerical heading (2941 antibiotics over 2924 nitrogen heterocyclics).
If with synthesis impurities >5%
Chemical preparations if not meeting 'separate chemically defined' purity of chapter note 1(a).
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Import Tips & Compliance
• Chiral purity certificate (>99% ee) mandatory; racemic mixtures reclassify under general antibiotics
• Controlled temperature (-20°C) shipping prevents racemization; declare optical rotation [+18° to +20°]
• Research chemical declarations require end-user statements to avoid Schedule H drug controls
Related Products under HTS 2941.40.00.00
Chloramphenicol Base Powder
Pure chloramphenicol base in powdered form, a broad-spectrum antibiotic chemically defined as D-(-)-threo-2,2-dichloro-N-[β-hydroxy-α-(hydroxymethyl)-p-nitrophenethyl]acetamide. It falls under HTS 2941.40.00.00 as a separate chemically defined antibiotic of the chloramphenicol class. Used primarily in pharmaceutical manufacturing for injection or oral formulations.
Chloramphenicol Palmitate USP
Chloramphenicol palmitate, the palmityl ester derivative of chloramphenicol, meeting USP pharmacopeia standards for oral suspension preparation. Classified under HTS 2941.40.00.00 as a derivative and salt of chloramphenicol per the specific antibiotic subheading. This lipid-soluble prodrug converts to active chloramphenicol in the body.
Chloramphenicol Sodium Succinate
Water-soluble sodium succinate salt derivative of chloramphenicol, used for intravenous administration in critical infections. Falls under HTS 2941.40.00.00 as a salt of chloramphenicol per chapter note 5(C)(1) classifying organic salts with parent compounds. Essential for hospital antibiotic therapy.
Chloramphenicol Hydrochloride
Hydrochloride salt form of chloramphenicol for enhanced aqueous solubility in eye drops and topical formulations. HTS 2941.40.00.00 classification as chloramphenicol salt per chapter note prioritizing specific antibiotic headings. Common in veterinary and human ophthalmology.
Chloramphenicol Succinate Monoester
Mono-succinic acid ester derivative of chloramphenicol for parenteral use, less common than disodium salt. HTS 2941.40.00.00 as chloramphenicol derivative per specific antibiotic provision. Used in specialized hospital compounding.
Chloramphenicol Acetyl Derivative
N-acetyl protected intermediate derivative of chloramphenicol used in synthesis of modified antibiotics. Falls under HTS 2941.40.00.00 as chemically defined chloramphenicol derivative. Pharmaceutical intermediate for research and production.