2-Hydroxybenzoxazole (Benzoxazolone)
2-Hydroxybenzoxazole, also known as benzoxazolone, is an aromatic heterocyclic compound featuring a fused benzene-oxazole ring system. Classified under HTS 2934.99.05.00 as an explicitly named 'other heterocyclic compound' with aromatic character. Used in dye synthesis, polymer additives, and pharmaceutical intermediates.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing a quinazoline ring system instead
Different fused heterocyclic ring structures have separate subheadings within 2934.99.
If pre-formulated as synthetic fluorescent brightener
Chapter exclusions send coloring/brightening agents to Chapter 32 regardless of heterocyclic base structure.
If for industrial polyphenol variants
If the oxygen heterocyclic function dominates over the full ring system, it may classify as industrial phenol derivative.
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Import Tips & Compliance
• Include FTIR or NMR spectra in documentation to confirm the benzoxazolone structure and aromatic classification
• Label as 'not for medicinal use' if intermediate grade to prevent FDA scrutiny under pharmaceutical headings
• Check for stabilizer additions that might trigger reclassification under chapter note (f) for preservation purposes
Related Products under HTS 2934.99.05.00
5-Amino-3-phenyl-1,2,4-thiadiazole
5-Amino-3-phenyl-1,2,4-thiadiazole is a specific aromatic heterocyclic compound containing a thiadiazole ring with an amino group and phenyl substituent. It falls under HTS 2934.99.05.00 as one of the explicitly named 'other heterocyclic compounds' that are aromatic or modified aromatic. This chemical is primarily used as an intermediate in pharmaceutical synthesis and agrochemical production.
4-Phenylmorpholine
4-Phenylmorpholine is a six-membered heterocyclic ether containing a nitrogen atom and phenyl substituent, making it aromatic or modified aromatic. It is explicitly listed under HTS 2934.99.05.00 within 'other heterocyclic compounds.' Commonly used as a catalyst in organic synthesis and polymer production.
1,9-Thianthrenedicarboxylic acid
1,9-Thianthrenedicarboxylic acid is a polycyclic aromatic heterocyclic compound with sulfur bridges and carboxylic acid groups. Explicitly named in HTS 2934.99.05.00 under 'other heterocyclic compounds: aromatic.' Used in specialty dyes and advanced material synthesis.
Thioxanthene-9-one (Thioxanthone)
Thioxanthene-9-one, commonly called thioxanthone, is a tricyclic aromatic heterocyclic ketone with a central sulfur atom. It is specifically enumerated under HTS 2934.99.05.00 as an 'aromatic heterocyclic compound.' Widely used as a photoinitiator in UV-curable inks, coatings, and adhesives.
5-Amino-3-phenyl-1,2,4-thiadiazole Technical Grade Powder
Technical grade 5-Amino-3-phenyl-1,2,4-thiadiazole powder (98%+ purity) is the industrial form of this named heterocyclic compound used in agrochemical synthesis. Classified under HTS 2934.99.05.00 due to explicit naming regardless of minor impurities allowed by chapter note (a). Supplied with stabilizer for safe handling.
Benzoxazolone UV Absorber Grade
Benzoxazolone (2-Hydroxybenzoxazole) UV absorber grade is specifically named under HTS 2934.99.05.00 for its aromatic heterocyclic structure. Used in plastics and coatings for light stabilization. Minor anticaking agent permitted per chapter note (f).