5-Methylfurfural
5-Methylfurfural is an alkyl-substituted furan aldehyde used in flavor and fragrance industries, containing unfused furan ring with oxygen hetero-atom. Classified HTS 2932.19.51.00 as 'other' furan compounds. Excluded from Chapter 32 coloring matters.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If vegetable-derived coloring extracts
Natural colorants from plant sources excluded from Chapter 29 per note (g).
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Import Tips & Compliance
• TSCA certification required; provide FEMA GRAS number 2703 for flavor use
• UN 2045 flammable liquid; distillation residue content <2% specified
• Flavor vs industrial chemical declaration affects FDA vs EPA jurisdiction
Related Products under HTS 2932.19.51.00
Tetrahydrofuran (THF)
Tetrahydrofuran is a saturated heterocyclic compound containing a five-membered furan ring with one oxygen hetero-atom, used as a solvent in chemical reactions and polymer manufacturing. It falls under HTS 2932.19.51.00 as a hydrogenated furan ring compound with oxygen hetero-atom only. This classification covers unfused furan ring structures per Chapter 29 notes.
Furfural
Furfural is an unsaturated heterocyclic aldehyde derived from agricultural waste, featuring an unfused furan ring with oxygen hetero-atom, used in resins and flavor production. Classified under HTS 2932.19.51.00 as 'other' furan ring compounds per Chapter 29 hierarchy. Meets criteria for separate chemically defined organic compounds.
2-Methylfuran
2-Methylfuran is a simple alkyl-substituted furan ring compound with oxygen hetero-atom only, used as a biofuel component and flavoring agent. Falls under HTS 2932.19.51.00 as an unfused furan ring 'other' compound. Qualifies as chemically defined per Chapter 29 note (a).
Furfuryl Alcohol
Furfuryl alcohol contains an unfused furan ring with a hydroxymethyl substituent and oxygen hetero-atom only, used in foundry resins and polymers. HTS 2932.19.51.00 applies as hydrogenated-capable furan 'other' compound. Excludes alcoholates per Chapter 29 note (D).
2,5-Dimethylfuran
2,5-Dimethylfuran features an unfused furan ring with symmetric methyl substitutions at positions 2 and 5, used in organic synthesis. Classified HTS 2932.19.51.00 as oxygen-only heteroatom furan 'other'. Chemically defined isomer mixture excluded unless acyclic.
2-Furoic Acid
2-Furoic acid contains a carboxylic acid function attached to unfused furan ring with oxygen hetero-atom only, used in pharmaceuticals. HTS 2932.19.51.00 as furan 'other' per numerical classification rule. Acid function subordinate to ring structure.