Naproxen Base
Naproxen is an NSAID used for pain relief, fever reduction, and inflammation, classified in HTS 2933.99.55 due to its aromatic heterocyclic nitrogen-containing structure. As a bulk pharmaceutical API primarily affecting the CNS, it meets the heading for analgesics and antipyretics.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If considered a carboxylic acid derivative without dominant heterocycle
Material composition shifts to oxygen-function acids if heterocyclic nitrogen not principal characteristic.
If for medicinal use in mixed formulations
Bulk medicaments mixed with excipients fall under Chapter 30, not pure APIs.
If antibiotic rather than analgesic primary function
Different therapeutic use changes subheading within Chapter 29.
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Import Tips & Compliance
• Submit detailed spectral analysis proving aromatic heterocyclic nitrogen hetero-atom(s) for classification
• Include stability data as stabilizer additions are allowed per chapter note (f) without reclassification
• Watch for pitfalls in ester forms, which classify with the acid per chapter note on esters
Related Products under HTS 2933.99.55
Ibuprofen USP
Ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID) classified under HTS 2933.99.55 as an analgesic, antipyretic, and nonhormonal anti-inflammatory agent. It features an aromatic heterocyclic structure with nitrogen hetero-atoms, fitting the chapter's criteria for separate chemically defined organic compounds primarily affecting the central nervous system.
Ketoprofen Powder
Ketoprofen is a propionic acid-derived NSAID analgesic and antipyretic with aromatic heterocyclic nitrogen features, fitting HTS 2933.99.55. Used primarily for CNS-mediated pain relief and inflammation.
Indomethacin USP
Indomethacin is an indole-acetic acid NSAID classified in HTS 2933.99.55 for its nitrogen-heterocyclic aromatic structure acting as analgesic and anti-inflammatory.
Meloxicam API
Meloxicam, an oxicam NSAID, features nitrogen-heterocycle for pain and inflammation relief under HTS 2933.99.55.
Etodolac Powder
Etodolac, a pyranocarboxylic acid NSAID with indole nitrogen heterocycle, classified as analgesic in HTS 2933.99.55.
Ketorolac Tromethamine
Ketorolac tromethamine salt, NSAID analgesic with pyrrolizine nitrogen heterocycle, under HTS 2933.99.55.