Alizarin
Alizarin is a red anthraquinone derivative containing aromatic lactone functionality used in pharmaceutical staining. Falls under HTS 2932.20.20.00 as aromatic oxygen-heterocycle with drug applications in histology. Historically significant as first synthetic dye with medicinal uses.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If primarily sold as colouring matter of vegetable origin
Chapter 29 exclusion note sends natural colorants to Chapter 32 regardless of structure
If non-lactone anthraquinone structure
Other heterocyclic oxygen compounds without lactone functionality classify differently within 2932
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Import Tips & Compliance
• Reference USP monograph for histological stains; include spectral data (λmax 425nm)
• Distinguish from textile dye grade; declare pharmaceutical purity grade only
• Batch testing for heavy metals essential as anthraquinones bioaccumulate
Related Products under HTS 2932.20.20.00
Warfarin Sodium
Warfarin sodium is an aromatic lactone derivative used as an anticoagulant drug to prevent blood clots. It falls under HTS 2932.20.20.00 as an aromatic lactone classified as a drug, containing oxygen hetero-atoms in a heterocyclic structure. This synthetic coumarin-based compound is chemically defined and meets Chapter 29 requirements for pharmaceutical lactones.
Dicumarol
Dicumarol is a naturally-derived aromatic lactone anticoagulant originally isolated from spoiled sweet clover. Classified under HTS 2932.20.20.00 as an aromatic lactone drug with oxygen-containing heterocyclic ring. Used historically for thrombosis treatment before synthetic alternatives.
Aflatoxin B1 Standard
Aflatoxin B1 is a highly toxic aromatic lactone mycotoxin used as analytical standard for food safety testing. Falls under HTS 2932.20.20.00 as an aromatic lactone with recognized pharmaceutical reference applications. The difurocoumarin structure contains oxygen hetero-atoms in fused heterocyclic rings.
Senecionine
Senecionine is an aromatic otonecine-class pyrrolizidine lactone alkaloid used in toxicology research. Classified under HTS 2932.20.20.00 due to its oxygen-containing heterocyclic lactone structure and pharmaceutical research applications. Isolated from Senecio plants as reference hepatotoxin standard.
Patulin Reference Standard
Patulin is a toxic aromatic lactone mycotoxin produced by Penicillium fungi, used as analytical standard. HTS 2932.20.20.00 covers this oxygen-heterocyclic drug reference due to its pharmaceutical toxicology applications. Regulated for juice and food safety testing.