Paraldehyde 99%+ HPLC Grade
HPLC-grade paraldehyde (>99% purity) for analytical and pharmaceutical quality control applications. Explicitly covered by HTS 2912.29.30.00 USP grade specification for cyclic aldehyde polymers. High purity ensures chromatographic performance.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If certified reference material for diagnostics
Diagnostic reagents exclude from Chapter 29 per note 2(e); pure standards remain classified here.
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Import Tips & Compliance
• HPLC chromatogram required to verify single peak purity
• Small package exemption may apply for lab quantities <1L
• Store refrigerated; declare temperature requirements on invoice
Related Products under HTS 2912.29.30.00
3,4-Dimethylbenzaldehyde
3,4-Dimethylbenzaldehyde is a cyclic aldehyde with the chemical formula C9H10O, featuring a benzene ring substituted with aldehyde and two methyl groups at positions 3 and 4. It falls under HTS 2912.29.30.00 as a specified cyclic aldehyde without other oxygen functions, used primarily as an intermediate in organic synthesis for pharmaceuticals and fragrances. This chemically defined organic compound meets Chapter 29 note (a) for separate compounds.
Paraldehyde USP Grade
Paraldehyde USP grade is a cyclic trimer of acetaldehyde (C6H12O3), meeting United States Pharmacopeia standards for medicinal use as a sedative-hypnotic. Classified under HTS 2912.29.30.00 as a specified cyclic polymer of aldehydes without other oxygen functions. It qualifies under Chapter 29 for chemically pure organic compounds used in pharmaceuticals.
p-Tolualdehyde (4-Methylbenzaldehyde)
p-Tolualdehyde, also known as 4-methylbenzaldehyde (C8H8O), is an aromatic aldehyde with a methyl group para to the aldehyde on the benzene ring. It is explicitly named in HTS 2912.29.30.00 for cyclic aldehydes without other oxygen functions, commonly used in flavor, fragrance, and pharmaceutical synthesis. Meets Chapter 29 requirements as a separate chemically defined compound.
3,4-Dimethylbenzaldehyde 98% Purity
Industrial grade 3,4-dimethylbenzaldehyde at 98% purity serves as a key intermediate for synthesizing pharmaceuticals and agrochemicals. Falls under HTS 2912.29.30.00 as the specifically named cyclic aldehyde, even with minor impurities allowed under Chapter 29 note (a). Used in fine chemical manufacturing.
Paraldehyde Pharmaceutical Intermediate
High-purity paraldehyde used as intermediate in synthesis of other pharmaceuticals, confirmed USP-equivalent standards. HTS 2912.29.30.00 covers this cyclic aldehyde polymer explicitly for medicinal chemical applications. Excludes formulated drugs per Chapter exclusions.
p-Tolualdehyde Technical Grade
Technical grade p-tolualdehyde (90-95% purity) for industrial fragrance and flavor production. Specifically named in HTS 2912.29.30.00 as cyclic aldehyde without other oxygen function, qualifying as chemically defined per Chapter 29. Common in perfumery synthesis.