Drugs
Heterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure: > Other: > Other: > Drugs
Duty Rate (from China)
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Products classified under HTS 2933.19.45.00
Celecoxib API
Celecoxib is a selective COX-2 inhibitor used as the active pharmaceutical ingredient in anti-inflammatory drugs like Celebrex for treating arthritis. It contains an unfused pyrazole ring in its heterocyclic structure, qualifying it under HTS 2933.19.4500 as a pyrazole-based drug. This classification applies to pure chemical compounds intended for pharmaceutical use.
Rizatriptan Benzoate API
Rizatriptan benzoate is the active ingredient in Maxalt for migraine treatment, featuring a pyrazole ring in its structure. Classified under HTS 2933.19.4500 as a drug containing unfused pyrazole ring per Chapter 29 notes. Used primarily as a serotonin receptor agonist in pharmaceutical manufacturing.
Fomepizole API
Fomepizole is an antidote for ethylene glycol/methanol poisoning, featuring a simple 4-methylpyrazole structure. Classified under HTS 2933.19.4500 as a pyrazole ring drug for emergency medical use. Provided as sterile injectable-grade API.
Aminaphtone API
Aminaphtone is a pyrazole derivative used for capillary fragility treatment in vascular disorders. Features 4-amino-3-methyl-1-phenylpyrazol-5-one structure qualifying under HTS 2933.19.4500. Pharmaceutical grade for tablet manufacturing.
Metamizole Sodium API
Metamizole sodium (dipyrone) contains pyrazole ring as analgesic/antipyretic active ingredient. Classifies under HTS 2933.19.4500 as pyrazole drug despite sodium salt form per Chapter note 5(C). Used globally for pain relief.
Sildenafil Citrate API
Sildenafil citrate, the active ingredient in Viagra, contains a pyrazole ring within its heterocyclic structure for erectile dysfunction treatment. Falls under HTS 2933.19.4500 as a pyrazole-containing drug per Chapter 29 chemical classification rules. Supplied as bulk powder for tablet formulation.
Zaleplon API
Zaleplon, active in Sonata sleep aid, contains pyrazole ring as core structure for non-benzodiazepine hypnotic action. HTS 2933.19.4500 classification for unfused pyrazole drugs. Bulk API for capsule production.